#linuxcnc | Logs for 2015-10-14

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[00:00:08] <JT-Shop> say goodnight Gracie
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[00:31:39] <zeeshan> PetefromTn_: lol
[00:31:59] <zeeshan> shit my z axis is only 7.8Nm
[00:32:01] <zeeshan> for the mill
[00:32:07] <zeeshan> im confused how this thing has the same current rating?
[00:33:16] <Wolf_> RPM the same?
[00:33:48] <zeeshan> no
[00:33:49] <zeeshan> its half the rpm
[00:34:04] <zeeshan> so my z axis on the mill is 13.8A, 173V , 3000 rpm
[00:34:17] <zeeshan> the z axis on the lathe is 12A, 165V, 1500rpm
[00:34:42] <zeeshan> zaxis on mill is 7.8Nm, z axis on lathe is 12Nm
[00:35:42] <Wolf_> more turns on the winding or something
[00:36:01] <zeeshan> it must have more copper
[00:36:04] <zeeshan> it weighs 70kg
[00:36:08] <zeeshan> while the mill one is 28kg
[00:36:16] <zeeshan> so more winding makes sense
[00:36:18] <Wolf_> lol
[00:36:20] <zeeshan> but wouldnt it draw more current then?
[00:36:22] <archivist> power=torque*rpm
[00:36:45] <zeeshan> archivist: yes, but power = current times voltage too
[00:36:48] <zeeshan> and thats why im confused :P
[00:37:18] <zeeshan> i can see torque being higher at a lower rpm
[00:37:19] <zeeshan> that makes sense
[00:37:27] <archivist> no you are quoting the torque nm and confusing it with power
[00:37:57] <archivist> power is similar
[00:38:36] <zeeshan> so basically a be25a20ac drive
[00:38:40] <zeeshan> will run this motor fun?
[00:38:54] <zeeshan> 25A peak, 12.5 continuous
[00:39:09] <zeeshan> the drive is physically tiny compared to the fanuc driive..
[00:40:54] <archivist> there is efficiency too, and is the cooling different
[00:41:40] <archivist> easier to get cooling air to circulate at a higher speed
[00:42:03] <zeeshan> maybe im not following you
[00:42:35] <zeeshan> i can understand that torque is higher because the peak rpm is lower
[00:42:48] <zeeshan> but i don't understand why its 70kg vs 28kg
[00:42:53] <zeeshan> consuming the same amount of power
[00:43:02] <zeeshan> and less current
[00:43:23] <zeeshan> you're saying the motor needs more copper as a heatsink at lower speeds?
[00:44:14] <archivist> you need a larger diameter to get higher torque for the same forces, you need to conduct heat away differently at lower speed
[00:44:30] <archivist> both those add to weight
[00:44:46] <trentster> Hi all new water cooled spindle is arriving soon, I need to buy water pump, preferably something silent - would any entry level small fish tank pump do?
[00:45:31] <malcom2073> I've heard a 5 gallon bucket is actually enough cooling
[00:45:45] <jdh> with no pump?
[00:45:48] <malcom2073> Oh wait
[00:45:49] <malcom2073> bwahaha
[00:45:50] <malcom2073> oops
[00:46:01] <jdh> I use a 2.5 gallon bucket
[00:46:05] <malcom2073> Hmmm, one would expect a rotor on the back of the motor to auto-circulate
[00:46:12] <jdh> nah.
[00:46:24] <jdh> 24krpm rotor for water?
[00:46:28] <malcom2073> :-D
[00:46:30] <malcom2073> Hells yeah!
[00:46:35] <malcom2073> Point taken though
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[00:49:21] <jdh> trentster: pretty much anything that has enough head pressure for whatever height you have will work.
[00:49:52] <zeeshan> http://cncmanual.com/fanuc/
[00:49:54] <zeeshan> holy cowe
[00:49:58] <jdh> well, assuming you mean a generic chinese water cooled spindle. no idea about real ones.
[00:49:59] <zeeshan> found a motherload of fanuc manuals
[00:50:09] <trentster> jdh: thanks
[00:51:03] <trentster> yeah its a generic chinese 2.2Kw - A real spindle != Budget :P
[00:51:15] <jdh> that's what mine claims also.
[00:51:39] <malcom2073> I need to buy one of them
[00:52:22] <jdh> whatever harbor freight has should be fine.
[00:52:57] <jdh> http://www.omiocnc.com/x6-2200l-3a/ mine looks like the one on the bottom right of that page
[00:58:06] <PCW> zeeshan: the lower the motor speed the larger and heavier it is for the same power
[00:58:25] <zeeshan> why
[00:58:43] <zeeshan> (
[00:58:46] <zeeshan> (more turns)
[00:58:52] <zeeshan> is that why?
[00:58:54] <PCW> because the power limit is mainly I^2 r losses
[00:59:23] <zeeshan> would a 25A peak drive work?
[00:59:33] <zeeshan> cause it has the correct continuous rating
[00:59:40] <zeeshan> but i remember last time you told me, if i want to get more accel
[00:59:44] <PCW> if you double the motor voltage and double the RPM you get twice the output power but not significantly more heat
[00:59:47] <zeeshan> i need a drive that can handle larger peak currents
[01:02:21] <PCW> just imagine running a 300V motor on 600V, you get twice the power at the same torque/current (assuming the insulation/armature, and bearings hold up)
[01:03:18] <PCW> so not significantly more heating (which limits the stall current)
[01:04:07] <zeeshan> because there is more potential to do work
[01:04:09] <zeeshan> right?
[01:04:21] <PCW> yes
[01:04:28] <zeeshan> so less electrons need to flow
[01:04:32] <zeeshan> since each electron has more "charge"
[01:04:38] <zeeshan> (not scientifically accurate)
[01:04:41] <zeeshan> but i think i understand
[01:04:55] <zeeshan> how does peak current come into play?
[01:05:22] <PCW> so like engines, if you want small, light, and powerful, run faster
[01:05:36] <zeeshan> v8 more torque :D
[01:05:41] <zeeshan> at low rpm
[01:05:44] <zeeshan> nice analogy
[01:07:00] <PCW> Do you have the Fanuc drives?
[01:07:16] <zeeshan> yes
[01:07:24] <zeeshan> the spindle driv eis:
[01:07:38] <zeeshan> a06b-6044-h010
[01:07:40] <zeeshan> according to spec sheet
[01:07:47] <zeeshan> that should be a model 8 ac spindle servo unit
[01:07:53] <zeeshan> which is a bit weird
[01:07:55] <PCW> the servo drives are likely analog at that vintage
[01:07:57] <zeeshan> cause it's driving a model 12 motor
[01:08:14] <zeeshan> (a06b-1012-b200)
[01:08:32] <zeeshan> im looking thru the manual
[01:08:53] <PCW> what is the servo drive PN?
[01:09:03] <zeeshan> sec that ill need to check
[01:09:08] <PCW> (X and Z may be different)
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[01:13:26] <zeeshan> they are same
[01:13:28] <zeeshan> the motors are same
[01:14:12] <zeeshan> a20b-0009-0320
[01:14:30] <PCW> maybe A06b-6057 drive?
[01:14:42] <zeeshan> im dumb
[01:14:49] <zeeshan> sec.
[01:14:50] <zeeshan> :P
[01:15:10] <PCW> no must be earlier (604x)
[01:15:30] <PCW> 6057 is AC servo but analog
[01:15:56] <PCW> 6058 is first digital interface servo (PWM)
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[01:17:42] <zeeshan> a06b-6047-h003
[01:18:25] <zeeshan> wow
[01:18:28] <zeeshan> they are cheap to replace
[01:18:37] <Tom_itx> ancient?
[01:19:05] <zeeshan> http://www.ebay.com/itm/FUJITSU-Fanuc-ltd-Velocity-Control-Unit-A06B-6047-H003-/381436789760?hash=item58cf678400
[01:19:09] <zeeshan> im assuming that stuff on the bottom
[01:19:12] <zeeshan> is the power supply?
[01:19:50] <Tom_itx> looks like a supply
[01:23:42] <Wolf_> looks old, I can smell it looking at the pic
[01:24:02] <zeeshan> honestly
[01:24:09] <zeeshan> after going with completely new parts w/ the mill
[01:24:13] <zeeshan> i wouldnt mind trying to actually retrofit
[01:24:17] <zeeshan> vs recreate
[01:24:27] <zeeshan> i want to go through the experience
[01:24:43] <Tom_itx> do it
[01:24:59] <Tom_itx> i'm sure there's plenty of help around here
[01:25:00] <zeeshan> the recreating was a fun process
[01:25:11] <zeeshan> i hope this one is fun too
[01:25:18] <zeeshan> yes
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[01:32:09] <PCW> yeah analog servo drive as far as I know
[01:32:29] <zeeshan> score..................!
[01:32:40] <zeeshan> if you look hard enough
[01:32:41] <zeeshan> you get it
[01:32:44] <zeeshan> http://i.imgur.com/QObqBAY.png
[01:33:14] <PetefromTn_> meh I would just start over man but that's just me
[01:33:29] <zeeshan> PetefromTn_: i did w/ the mill
[01:33:31] <PCW> may have slightly weird power requirements (100 VAC for instance)
[01:33:32] <zeeshan> want to try something diff :P
[01:33:39] <zeeshan> i see rst
[01:33:43] <zeeshan> its likely 3 phase?
[01:34:06] <zeeshan> im really curious to know what the peak output for this driv eis
[01:34:11] <zeeshan> cause i rather just replace it w/ a be25a20ac
[01:34:14] <zeeshan> its way smaller..
[01:34:44] <PetefromTn_> If your existing parts are ANYTHING like how expensive my existing parts were the first time you blow one the novelty of fixing whats there will wear off real quick
[01:34:56] <zeeshan> PetefromTn_: it seems like only the ac spindle drive
[01:34:58] <zeeshan> is expensive
[01:35:01] <zeeshan> the rest are like 200 bux to replace
[01:35:01] <Tom_itx> PetefromTn_, that driver was 89
[01:35:09] <zeeshan> which is cheap
[01:35:14] <zeeshan> the spidnle drive is 3000
[01:35:15] <zeeshan> =/
[01:35:17] <PetefromTn_> for used parts?
[01:35:19] <zeeshan> yea
[01:35:30] <PetefromTn_> well its your machine good luck with it
[01:35:34] <Tom_itx> well the spindle is what matters on that
[01:35:36] <zeeshan> if you didnt know
[01:35:37] <PetefromTn_> you know how I feel ;)
[01:35:42] <zeeshan> my mill is all used parts
[01:35:46] <zeeshan> it had hiccups in the beginning
[01:35:49] <zeeshan> but its reliable now
[01:35:56] <zeeshan> maybe i got lucky
[01:36:02] <Tom_itx> you got one under your belt now though
[01:36:14] <PetefromTn_> I TRIED to fix the original control on my machine
[01:36:14] <zeeshan> i did blow up 2 drives
[01:36:16] <zeeshan> :P
[01:36:25] <PetefromTn_> after blowing several thousand bucks I got REAL tired of it
[01:36:30] <zeeshan> im not keeping the original control
[01:36:33] <zeeshan> im keeping the original drives
[01:36:37] <zeeshan> but 7i77 ofcous!!!
[01:36:40] <zeeshan> <3 mesa!~
[01:36:45] <zeeshan> and linuxcnc baby!!!
[01:36:58] <PetefromTn_> not trying to tell you what to do man its your baby have fun
[01:37:20] <Tom_itx> i'm tellin you to get your tool changer working !!
[01:37:21] <zeeshan> you know whats interesting
[01:37:25] <PetefromTn_> everything fanuc I ever saw was stupid expensive surprised your parts are that cheap
[01:37:27] <zeeshan> the drive has a builtin breaker??
[01:37:52] <PetefromTn_> Tom_itx honestly man that is probably never gonna happen
[01:37:57] <PetefromTn_> the rate I am going here
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[01:40:13] <Tom_itx> you'd get more done if you did
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[01:40:29] <PetefromTn_> possibly
[01:40:48] <PetefromTn_> but I just don't know enough about this stuff and quite frankly I am afraid to screw up the machine
[01:41:18] <Tom_itx> what sort of motor is on the carousel?
[01:41:24] <Tom_itx> have you tried turning it?
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[01:41:39] <PetefromTn_> everything on the carousel is working and implemented into the control
[01:42:28] <PetefromTn_> I have buttons to turn the carousel fwd and backwards
[01:42:45] <PetefromTn_> the only thing it would maybe need is a home switch because it did not come with one
[01:43:52] <trentster> Anyone know offhand what size pvc or silicon water tubing I need for a 80mm Chinese spindle?
[01:46:39] <jdh> mine has some weird clamp down fittings. Needs to fit pretty well.
[01:47:02] <Contract_Pilot> 64 Values My Ass..
[01:47:02] <Contract_Pilot> http://www.stevenrhine.com/wp-content/uploads/2015/10/Ebay-Seller-foursea-Resistors.jpg
[01:47:35] <Contract_Pilot> Only out .99 fast shipping though! http://www.ebay.com/itm/1280-Pcs-64-Values-1-ohm-10M-ohm-1-4W-Metal-Film-Resistors-Assortment-Kit-Set-/191704276261?ssPageName=ADME:X:RRIRTB:US:3160
[01:47:47] <Wolf_> lol
[01:47:52] <Contract_Pilot> All 220K hahaha
[01:48:10] <Contract_Pilot> Got a Stack of 48V PSU's
[01:48:30] <Wolf_> my 2nd 48v showed up today
[01:48:46] <Praesmeodymium> well you can gat a bunch of values with enough 220ihm resitirsin series and parallel
[01:49:15] <Contract_Pilot> the 12V 21A has Rubycon caps in it.
[01:49:30] <Contract_Pilot> Yea,
[01:49:54] <Contract_Pilot> Missing 1 Stepper/Driver.
[01:50:10] <Praesmeodymium> sounds like email time
[01:50:41] <Contract_Pilot> Yep...
[01:51:20] <Contract_Pilot> Out of 8 48V PSU only 3 are diffrent but 48V
[01:51:44] <Contract_Pilot> 7 Came in 1 Amazon Box.
[01:52:59] <Praesmeodymium> holy horder batman
[01:53:40] <trentster> jdh: what about the side that connects to the pump do you remember the inner diameter in mm or inches you are using?
[01:53:41] <Praesmeodymium> sorry my jealousy is seeping out lol
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[02:06:16] <PetefromTn_> I wish there was an easy way to speed up my picatinny rail profile program but cutting all those thin slots is just a bitch LOL
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[02:11:52] <Contract_Pilot> These 12V 21A are nice and Stable.
[02:12:01] <Contract_Pilot> Will play well with the Ham.
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[02:23:58] <Contract_Pilot> Set it at 14V http://www.stevenrhine.com/wp-content/uploads/2015/10/12V-21A-PSU-14V-Stable-1-1024x576.jpg
[02:24:17] <Contract_Pilot> Best quality so far rubycon Caps.
[02:27:05] <PetefromTn_> zeeshan must be rubbing up against his new toy LOL
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[02:32:38] <PetefromTn_> I must admit that I would be ;0
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[03:34:17] <Contract_Pilot> Little PSU is kicking ass
[03:34:30] <Contract_Pilot> Best one yet so I orderd another!
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[03:55:20] <MacGalempsy> welll shit, i got laid off today
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[03:57:19] <MacGalempsy> if anyone is awake, let me know how you deel with it
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[04:18:09] <d1plo1d> is the a way to set up a CUPS server for LinuxCNC/EMC2?
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[04:24:00] <MacGalempsy> well whst shitty day. anyone around to help me out?
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[04:46:28] <MacGalempsy> thanks yall. yall are out of me will. except for archivist, which may get it all
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[05:37:32] <rootB> Hey linuxCNC, I got a shapeoko 2 machine that i want to modify so it works properly now and finally set it down to a permanent place
[05:37:43] <rootB> could you guys help me out later on this month to buy the things i need to finally do it?
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[05:40:51] <rootB> so i hope that's a yes..
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[06:04:34] <MattyMatt> what is improper with the way it is?
[06:07:25] <MattyMatt> also for a permanent place, have you considered hinging it to a wall? that's a poular way to stow a flatbed router
[06:07:27] <Contract_Pilot> that 12V - 21A kicks ass just needs larger filter caps for the spike of a ham
[06:08:09] <Contract_Pilot> Going to pull the rubycon and check the ESR
[06:08:20] <MattyMatt> wha? you using a cnc psu for a radio, other way round, or what?
[06:09:16] <MattyMatt> and do you have a licence to run that CB radio at 1000W?
[06:09:33] <Contract_Pilot> 13.8V for ham radio kicked it to 14v held steady 14V http://www.stevenrhine.com/wp-content/uploads/2015/10/12V-21A-PSU-14V-Stable-1-1024x576.jpg
[06:09:42] <Contract_Pilot> KG7AMV i am a Ham!
[06:10:00] <MattyMatt> Italians used to do that. 1000W burners. we could hear them in England
[06:10:51] <Contract_Pilot> Hook to radio sucks 19amps on radio boot browns out.
[06:11:13] <Contract_Pilot> will scope it next week for 9.00 no bitching!
[06:11:41] <Contract_Pilot> Rubycon caps in the supply alone worth 9.00 if they are real.
[06:12:24] <Contract_Pilot> Gun show prep in the morning!
[06:13:59] <Contract_Pilot> Thursday setup FRi, Sat, Sun show monday recover! Tuesday wire sherline machines hope mesa has 7I76's
[06:21:50] <archivist> rootB, create a web page of images of the machine so people can see what state it is in
[06:25:21] <Contract_Pilot> stevenrhine.com
[06:26:13] <Contract_Pilot> need my 12X up running mach3 but threads are shit!
[06:26:40] <Contract_Pilot> Need to take advantage one encoder.
[06:34:47] <MattyMatt> mesa works with mach3?
[06:35:53] <archivist> you scrap mach to get threading
[06:38:23] <MattyMatt> fair enough :) so, mesa cards haven't reached the stage where they run an Axis clone in a browser
[06:38:48] <MattyMatt> and the whole of the linuxcnc onboard. I can see that happening
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[06:40:55] <MattyMatt> cloud cnc. remote users can jog your machine, and google carves ads in your workpiece :p
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[06:51:02] <archivist> obtrusive ads are making some sites less usable
[06:52:12] <MattyMatt> for sure. ever since they discovered swf
[06:54:35] <MattyMatt> banner exchange rings, all is forgiven
[06:54:41] <MattyMatt> advertise your friends
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[07:00:24] <Deejay> moin
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[07:14:27] <Contract_Pilot> Yea, mach sucks waiting on mesa.
[07:14:53] <Contract_Pilot> been 5 weeks now suposed to have had them instock last week.
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[07:21:21] <Praesmeodymium> Contract_Pilot: gun show at the expo center?
[07:21:31] <Praesmeodymium> btw we are neighbors I live in portland
[07:25:25] <Contract_Pilot> Cool...
[07:25:36] <Contract_Pilot> Yep Expo this weeknd..
[07:26:02] <Contract_Pilot> I am in the couve!
[07:28:50] <Contract_Pilot> Praesmeodymium> cool you are local.
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[07:33:21] <MrSunshine> hmm how the heck is the scrolls in chucks made? =)
[07:33:28] <Praesmeodymium> yeah, its nice to meet locals who dont run lokl
[07:34:03] <MrSunshine> high infeed on the cross slide to make like a thread?
[07:34:08] <Praesmeodymium> your not actually in portland so it might be portland problem, but everytime I mention being local to someone in #reprap they leave... or it could be me lol
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[07:36:20] <MattyMatt> it's that hick internet you have there up in the wilderness
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[07:38:34] <MattyMatt> http://i.imgur.com/wkBldLN.png MrSunshine like this
[07:38:54] <MattyMatt> on a 3d printer :)
[07:39:38] <Contract_Pilot> must be a know it all from the local colective of dumb shits
[07:39:42] <archivist> MrSunshine, easy with linuxcnc
[07:39:51] <MattyMatt> when I had my chuck apart to measure for that, I thought the scroll seemed forged
[07:40:15] <archivist> the thread will be machined
[07:40:17] <MattyMatt> but machined then hardened was also likely
[07:40:18] <Praesmeodymium> I dont like people enough to gather in a collective lol
[07:40:51] <MrSunshine> just wondering how they make them =)
[07:41:15] <Contract_Pilot> yea, no proffit? ask the CEO of the collective how much they make they run!
[07:41:28] <Contract_Pilot> and Avoid!
[07:42:36] <Contract_Pilot> Geeks need to band ang start a true community school.
[07:42:41] <archivist> in the old days probably a cam auto or a lathe with horizontal geared traverse, these days one can gear axes, or use a rotary and the right gcode
[07:45:20] <MattyMatt> the teeth under the jaws I'm doing freehand in blender, and I'll probably end up doing them freehand with a file IRL if I get round to it
[07:45:38] <archivist> something like set middle or rotary as 0,0 g1 y200 a3600 would mill a helical path with ten turns in 200 mm (if metric mill)
[07:46:36] <MattyMatt> spiral. my TD teacher was hot on that distinction
[07:47:14] <Contract_Pilot> Was thinkiking of starting a comminuty collage type thine on go fund me.
[07:47:24] <archivist> the gcode for the jaws, just remember the pitch and the 1 3rd of a pitch offset between jaws
[07:47:25] <MrSunshine> is an update to linuxcnc 2.7 worth it? =)
[07:47:32] <MrSunshine> im afraid i break something :P
[07:47:44] <MattyMatt> cone shaped spiral/helix didn't exist at O level
[07:47:47] <archivist> there are some upgrade changes
[07:48:10] <Contract_Pilot> Tearchers actually work the trade and teach on the side then hire form the student pool.
[07:48:33] <archivist> MrSunshine, I tend to use a new hard disk so I can swap back
[07:48:52] <MrSunshine> archivist: not a bad idea .. tho i have no new harddisks to put in that computer :/
[07:48:59] <MattyMatt> that was likely. his tales were all about ship architecture, and there's a shipyard down the road
[07:49:09] <Praesmeodymium> well in the portland area what we have is the distilled essence of hackerspace, some guy with too many toys tries to mentize his equipment with the help of a few friends, they rent a space then do this super cliquesh thing that appears inclusionary but isnt
[07:49:14] <archivist> new secondhand!
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[07:51:34] <Contract_Pilot> Right, need somthing strucdtured!
[07:51:57] <Contract_Pilot> Known people in the trade!
[07:52:38] <MattyMatt> http://www.bbc.co.uk/news/uk-england-merseyside-34504399 shipyard is resurgent. I wonder if they'll take on a 49yo apprentice
[07:52:49] <archivist> knowing people in the right trades even better
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[07:54:33] <MattyMatt> smooth nick change daxro :)
[07:55:24] <daxro> I'm getting a 403 forbidden on http://www.linuxcnc.org/ I guess you know ...
[07:55:42] <MattyMatt> yeah here too
[07:56:11] <daxro> those pesky hackers
[07:57:04] <archivist> the hoster sets forbidden of a site if they think its been got at, known about yes
[07:57:54] <MattyMatt> http://linuxcnc.org/docs/html/gcode.html it's not the whole server, just the front page
[07:58:07] <MattyMatt> that works and refreshes
[07:58:18] <archivist> its the forum section as fas as I know
[07:58:23] <archivist> far
[07:58:52] <Contract_Pilot> got a warning that a link i was linking to was 404...
[08:01:22] <Contract_Pilot> Just noticed i have a nick in one of my fluke leads??? WTF how did that happen
[08:12:30] <daxro> I fluking annoyed if mine got nicked
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[08:34:31] <trentster> Does anyone know of a place that shares linuxcnc code snippets for routines like center finding etc?
[08:36:14] <archivist> the wiki
[08:36:35] <archivist> although probably offline at the moment
[08:37:26] <trentster> archivist: thanks
[08:37:29] <archivist> also it depends how you want to find a enter line
[08:38:13] <archivist> eg a feature, an edge, a hole
[08:38:21] <trentster> I plan to machine a "Triple Edge Finder" I then need to figure out the maths for its functions
[08:38:50] <trentster> similar to this guy but he is using Mach3 https://www.youtube.com/watch?v=dhmfnea0vVA
[08:39:53] <archivist> http://www.themakersguide.com/home/products/triple-edge-finder-2
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[08:42:12] <archivist> hehe silly price
[08:42:36] <trentster> yeah - its a bit expensive - but a fun project to make
[08:49:13] <daxro> What is the best way to get an Xbox Controller to act as a CNC pendant for linuxcnc ?
[08:51:53] <MattyMatt> wiki has an example, using PSX controller but same principle. it's a USB HID
[08:52:35] <MattyMatt> logitech's PSX controller iirc, but real ones also work with the usb adaptor
[08:54:07] <trentster> Guys is there a difference between water cooled chinese spindles vs more expensive "square" air cooled spindles in terms of RPM ranges?
[08:54:15] <daxro> Cool will check the wiki later when it's back up
[08:54:41] <trentster> I keep seeing air cooled listed as 0-24000rpm and water as 8000-24000 ?
[08:54:48] <MattyMatt> http://wiki.linuxcnc.org/cgi-bin/wiki.pl wiki appears to be worky
[08:55:06] <trentster> shouldent the logic be the same, cooling is cooling regardless of rpm?
[08:55:08] <daxro> huh cheers
[08:55:49] <archivist> trentster, often high speed motors have little torque at low speed
[08:56:03] <MattyMatt> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Using_A_Joypad_To_Move_Your_CNC_Machine
[08:56:13] <archivist> so useless below n rpm
[08:58:05] <MattyMatt> water cooling works better at low rpm, I'm sure. fan speed is stuck at spindle speed
[08:58:43] <trentster> hmmm interesting
[08:59:21] <trentster> So is a spindle on something like a Haas mill totally different technology to High Speed spindles you would use on a router?
[08:59:36] <trentster> They have to machine metals at very low rpm with lots of torque right?
[09:00:18] <MattyMatt> loads of kW, and maybe auto gearbox
[09:00:47] <__rob2> my Tormach PCNC 1100 is now on a boat!
[09:01:02] <__rob2> can't wait
[09:01:37] <trentster> yeah that 1100 is a beautiful machine - green with envy ;-)
[09:02:15] <__rob2> as long as they dont have to throw it off the side in stormy seas
[09:02:17] <MattyMatt> that's why I haven't bough a chinese spindle and vfd, because I recon I'll still need step pulleys, so I'll do that bit first
[09:02:29] <__rob2> according to my shipping insurance this is a possibility i'm covered for
[09:03:55] <MattyMatt> If I want a spindle stuck at 30krpm, I've got a wood router
[09:04:38] <trentster> rob_h: that happening is extremely unlikely - you have more chance of having a fatal slipping incident in the shower than that particular container falling off a ship :P
[09:04:57] <__rob2> yea, not falling though, pushed
[09:05:12] <trentster> MattyMatt: do you need 30k would 24k not suffice for 99% of stuff?
[09:05:15] <__rob2> apparently its rare, but a solution to stop the whole ship sinking
[09:05:24] <__rob2> they will throw stuff off the side in really rough seas
[09:05:40] <MattyMatt> trenster no real option, it's a wood router. speed control only dims the power
[09:06:07] <trentster> rob_h: yes - but extremely rare to the point of not worth even thinking about
[09:08:17] <MattyMatt> I'd bet a container is safer at sea per mile than on the road
[09:08:35] <MattyMatt> even tho the miles are 10% bigger :)
[09:09:14] * MattyMatt crashes __rob2's tormach into Mars
[09:12:44] <trentster> MattyMatt: I fortunately have not used a wood router before - the air cooled spindle I currently have is loud enough - I think the noise would drive me batshit crazy!
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[09:20:29] <ikcalB> hi @all. Is it just me having trouble to access the linuxcnc repos? I get a 403 forbidden
[09:29:00] <archivist> not just you
[09:32:23] <ikcalB> archivist: do you have any information, on whether this is a temporary problem?
[09:32:53] <archivist> should be temporary till someone can get to fix it
[09:33:02] <archivist> get time
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[09:38:45] <XXCoder> heys
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[09:44:10] <XXCoder> twins!
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[10:00:02] <jthornton> morning
[10:01:03] <XXCoder> hey
[10:01:14] <malcom2073> Morning
[10:01:48] <XXCoder> malcom2073: got refund yet?
[10:03:29] <MrSunshine> Forbidden
[10:03:29] <MrSunshine> You don't have permission to access / on this server.
[10:03:31] <MrSunshine> linuxcnc.org
[10:03:36] <MrSunshine> waddap
[10:03:42] <jthornton> broken
[10:03:43] <XXCoder> dunno
[10:03:53] <malcom2073> XXCoder: Yep
[10:04:09] <jthornton> something broke and dreamhost shut it down
[10:05:41] <XXCoder> got question
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[10:05:48] <XXCoder> I want to move domain out of godaddy
[10:05:58] <XXCoder> and good email service fairly cheap?
[10:06:21] <archivist> your current isp?
[10:06:24] <deargonaut> hello there! Does anyone know how long linuxcnc.org will be down?
[10:06:36] <archivist> till its fixed
[10:06:37] <jthornton> no
[10:06:39] <deargonaut> at least I am getting a 403-error
[10:06:45] <XXCoder> archivist: not sure how it applies, but comcast
[10:06:46] <deargonaut> lol... sure thing.
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[10:07:28] <archivist> XXCoder, you should have an email from your isp you use (I use gmail free)
[10:07:37] <XXCoder> archivist: not what I want
[10:07:44] <deargonaut> Is there any other way to download 2.7 now?
[10:07:46] <XXCoder> I want my own domain email addresses
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[10:08:11] <archivist> I have been too lazy to set up an email server on my domain
[10:08:42] <SpeedEvil> Ask Hilary for tips.
[10:08:57] <archivist> but have set one up one one companies server
[10:09:18] <XXCoder> ok
[10:09:45] <XXCoder> what about good and cheap domain
[10:09:52] <XXCoder> godaddy I'm tired of that company
[10:10:12] <jthornton> I bailed from godaddy real quick
[10:10:33] <archivist> I just get cheap names and self host the dns, not tied that way
[10:10:34] <jthornton> webhost4life has been good for the last 5 years I've been using them
[10:11:01] <malcom2073> I use godaddy for my domain, but not for anything else, I self-host on a VPS
[10:11:33] <archivist> self hosting means full control and no space issues
[10:11:45] <XXCoder> indeed
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[10:11:57] <XXCoder> you has static ip?
[10:12:04] <archivist> yes
[10:12:26] <XXCoder> nice. comcast dont provide that
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[10:12:42] <archivist> usually an extra
[10:12:47] <malcom2073> They do if you pay heh
[10:12:57] <archivist> ipv4 run out though
[10:13:24] <malcom2073> "run out", but they still got a huge block unalllocated that they own
[10:13:47] <archivist> which "they"
[10:14:06] <malcom2073> comcast and any other company that purchased them in bulk
[10:14:19] <archivist> some are selling stuff they grabbed to other isps
[10:15:31] <archivist> distant dreams http://www.ebay.co.uk/itm/Co-ordinate-Measuring-Machine-/231719315411
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[10:19:04] <XXCoder> jthornton: this one? https://www.webhost4life.com/
[10:19:36] <jthornton> yea
[10:19:45] <jthornton> I use the linux hosting
[10:19:47] <XXCoder> hmm no email alone hosting
[10:20:43] <MattyMatt> less distant dream, this looks worth it just to strip the DRO http://www.ebay.co.uk/itm/ISOMA-110-PROFILE-PROJECTOR/121762427134
[10:22:02] <archivist> must make a webcam mount for the cmm
[10:25:09] <archivist> XXCoder, you can use your dns to point your emails at other providers email service, probably gmail too
[10:25:45] <XXCoder> https://www.1and1.com/email-address#email-tariffs
[10:25:47] <XXCoder> hmm
[10:25:49] <XXCoder> not bad
[10:26:04] <trentster> archivist: do you recall offhand the way to wire a vfd to that cheapie breakout board you reccomended?
[10:26:54] <archivist> trentster, I added an isolated psu for the vfd out
[10:27:17] <MattyMatt> chinese DTI I got is Mitutogo brand. that amused me
[10:27:30] <trentster> archivist why?
[10:28:01] <archivist> to make sure the motor gnd is separate from PC gnd
[10:28:31] <jdh> you can do most chinese vfd's via modbus
[10:28:42] <archivist> even if the vfd may provide isolation on its analogue in
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[10:31:13] <trentster> hmmm I am lost now I currently have a 400w spindle with its own 48V PSU and its own internal vfd - I assumed the wires that went to that vfd would simply go to chinese external VFD - hmm I am a bit confused - so I now need to buy something extra?
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[10:32:19] <trentster> This is what I currently have: http://www.ebay.com/itm/CNC-400W-Brushless-Spindle-Motor-ER11-Mach3-PWM-speed-controller-Mount-PS-/121480243239
[10:34:07] <archivist> image in a few secs
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[10:35:56] <XXCoder> anyone here use fastmail?
[10:38:14] <archivist> trentster, http://www.collection.archivist.info/searchv13.php?searchstr=cnc+bob
[10:38:34] <archivist> that is a small dc to dc supply
[10:39:27] <archivist> I dont know what your vfd input needs
[10:39:52] <archivist> I am using the 0-10v mode for the vfd
[10:40:31] <archivist> must get around to boxing it up
[10:40:38] <jdh> I doubt the chinese vfd does PWM speed control.
[10:40:58] <jdh> you can get a pwm->analog converter (or make one) or use modbus
[10:41:03] <jthornton> getting closer with the dxf to g code converter :) dang pesky arc offsets
[10:41:55] <jdh> http://cnc4pc.com/product_info.php/c41-pwm-variable-speed-control-board-p-303 I have one of those on my mill.
[10:42:44] <XXCoder> jthornton: 2d dxf?
[10:42:50] <jthornton> yea
[10:42:53] <XXCoder> cool
[10:43:18] <archivist> trentster, and the "official" docs http://www.collection.archivist.info/archive/mirror/cnc/bob/
[10:43:24] <jdh> how do you pick up cut depths? text on the layer?
[10:43:49] <jthornton> http://pastebin.com/CKEHUTN8
[10:45:02] <jthornton> jdh, me?
[10:45:08] <jdh> you
[10:45:21] <jthornton> just working on the path conversion now
[10:45:57] <jdh> have you seen cradek's 'realize'?
[10:46:45] <jthornton> I think so a while back
[10:49:20] <trentster> archivist: thanks looking now
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[10:59:55] <keyson> Hello all. Is the web down for maintenance?
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[11:02:09] <XXCoder> broken
[11:05:10] -!- automata_ has quit [Ping timeout: 240 seconds]
[11:06:58] <keyson> XXCoder Ok. Do you know any mirror for the livecd?
[11:07:08] <XXCoder> not at this time unfortunately
[11:08:29] <keyson> XXCoder Thanks. Just have to wait then...
[11:08:33] <XXCoder> yeah
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[11:25:28] <jthornton> http://gnipsel.com/files/dxf2g/
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[11:36:26] <trentster> do I add basic antifreeze to spindle water coolant? and I assume its correct to use distilled water rather than tap water?
[11:38:01] <archivist> I think yes to some additives, to stop it rotting
[11:38:20] <XXCoder> yummy rotten coolant
[11:38:20] <jthornton> if it is aluminum make sure you use the correct one
[11:38:47] <trentster> jthornton: this is to cool the spindle not to cool the cutting bit
[11:39:05] <Sync> justr use the green coolant stuff
[11:39:07] <jthornton> right, some antifreeze is not good for aluminum
[11:39:32] <trentster> aah ok
[11:39:46] <trentster> Sync: does the green coolant stuff have a brand or a name?
[11:40:29] <archivist> soylent green
[11:41:16] <jthornton> lol
[11:41:21] <jthornton> mmmm
[11:41:23] <jthornton> yummy
[11:41:43] <XXCoder> I ran out of soylent today :(
[11:41:47] <XXCoder> not soylent green lol
[11:42:03] <XXCoder> in book its not people
[11:49:20] <Sync> I don't really get why people rage about it
[11:51:27] <Sync> trentster: glysantin g48 or g30
[11:52:02] <trentster> Sync: thanks googling it now to see if its available in AU
[11:52:42] <Sync> just any old coolant additive will do after all
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[12:06:04] <XXCoder> g1 x1000. y1000. f1000;
[12:06:17] <malcom2073> zoom!
[12:06:46] <trentster> So this is why you gotta be careful buying stuff from China - I placed these solar cells in the sun for the first time today. All was fine for the 1st few minutes a lovely 7.6V output per panel - then this started happening. https://monosnap.com/file/XD0hF2Ax54lPlhdcgdt78L1SCu3WbQ.png
[12:07:11] <XXCoder> I tested 1000 mm/s on my machine, when it jammed it actually moved kitchen table 3 inches lol (leg deform not move whole thing)
[12:07:12] <trentster> Reply from banggood product support after I sent an email - guess what?
[12:07:28] <trentster> Sorry - that product is out of warranty now ahaha
[12:07:34] <malcom2073> trentster: Not rated for sun exposure? :P
[12:07:51] <XXCoder> not rated for sun looks like
[12:08:02] <trentster> malcom2073: yes they work just fine if not exposed to light - its a new kind of panel :P
[12:08:08] <XXCoder> maybe its cover sheets is not UV resistant, considering it should work in sun...
[12:08:14] <malcom2073> heh
[12:08:49] <trentster> the batch is obviously faulty maybe they did not mix the resin correctly or something
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[12:09:11] <XXCoder> sucks
[12:09:32] <XXCoder> trentster: dont buy any brake led lights from chinese either
[12:09:36] <trentster> bah they were cheap - like $8 each - but yeah its still bloody annoying
[12:09:38] <XXCoder> I made 4 different orders
[12:09:43] <XXCoder> all dont work right
[12:10:04] <XXCoder> I finally decided to fuck it and buy local leds. $30
[12:10:36] <trentster> THese are all mono cell panels and 90% of all solar cells come from China anyway - you would think they would have gotten at least this right by now
[12:10:57] <XXCoder> it may be rejected batch "walked out of warehouse"
[12:11:04] <archivist> you got the rejects
[12:12:56] <trentster> The weird thing is the site shows 1060 of them sold with a perfect 10 review 5 out of 5 rating - so either 1) I am incredibly unlucky 2) they are lying or 3) keeping the panels in the closet for 6 months somehow altered the chemistry of them to make them not like the sun.
[12:13:02] <trentster> You decide :P
[12:13:19] <XXCoder> nah not planning to decide anytime soon lol
[12:14:11] <SpeedEvil> trentster: 4) everyone reviewing them simply tried them, and they worked, and died after 10 minutes
[12:14:56] <archivist> most idiots give feedback before they test them properly
[12:16:07] <trentster> yeah but most people come back and leave negative feedback when things go wrong
[12:16:23] <XXCoder> trentster: archivist can see trhe future
[12:16:34] <XXCoder> my proof: his answer to your comment.
[12:16:36] <trentster> Also its unlikely that people tested the panel and after 1 minute ran back inside the house to quickly review them
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[12:19:22] <MrTrick_> ahoy! Any advice appreciated - I've got small end mills and some 10 degree (or so) pointy engraving mills
[12:19:28] <MrTrick_> er, engraving bits
[12:19:44] <MrTrick_> I want to cut out a letter 'M' in black chancery font, quite small.
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[12:20:03] <Wolf_> you need to make bits spin
[12:20:06] <MrTrick_> (see the 'M' http://img.font.downloadatoz.com/download/imgs/b/l/a/Black%20Chancery-upper.png )
[12:20:37] <Tom_itx> high rpm, ~.010-.025 deep
[12:20:53] <MrTrick_> Ideally I want to cut out a pocket and do paint fill, but if using the end mill I can't reach the pointy parts of the letters. if using the engraving bit I can't cut out the wider parts so well (i don't think)
[12:21:30] <MrTrick_> the letter will be about 10mm wide
[12:21:56] <MrTrick_> Tom_itx: Wolf_: noted. Any more specific advice about bit choice and designing appropriate toolpaths?
[12:22:07] <MrTrick_> Material is silver, mill is a chinese 4030
[12:22:14] <MrTrick_> s/mill/router
[12:23:05] <fenn> MrTrick_: http://www.scorchworks.com/Fengrave/fengrave.html
[12:24:43] <archivist> silver! hand engrave with a graver :)
[12:25:52] <MrTrick_> archivist: have no penmanship skills. Do have a cnc router.
[12:27:20] <MrTrick_> fenn: I have a dxf file all ready to go - more asking about whether to eg "pocket" with end mill then "pocket" with v cutter (*that's* what those things are called), or something else.
[12:27:37] <fenn> "The V-Bit Diameter can be set to diameters less than the actual cutting bit diameter to limit the depth of v-carving."
[12:27:47] <archivist> use the right font its just gets done
[12:29:52] <MrTrick_> and in Cambam?
[12:30:32] <trentster> MrTrick_: cambam does not do engraving well imho - better to use one of the vectric products
[12:31:47] <MrTrick_> trentster: do you mean like rasterising? I've got the vector file all ready to go. I want to cut a nice even pocket through the area of the letter.
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[12:32:14] <MrTrick_> If I had heaps of time to spare and the chemicals handy, I could potentially do this with a deep etch.
[12:34:31] <MrTrick_> hmm, cambam has a "V-cutter" profile, not sure how to calculate diameter for something that looks like http://thumbs2.ebaystatic.com/d/l225/m/mOtqplIhMqMEiieDQ7vTlfw.jpg
[12:35:19] <trentster> cambam needs very thin slim line font to try and do anything lettering related it will only follow the toolpath directly over the line - this limits font possibilities and the use of stuff like nice vbit carved fonts etc.
[12:35:54] <trentster> You could in theory get away with it with the right font and bit combination in cambam - but it was always yucky for me.
[12:36:31] <trentster> The stuff in Vectric always looks gorgeous in the preview and machines identically
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[12:38:36] <trentster> Plus doing stuff like this in Cambam is impossible : https://pbs.twimg.com/media/CQ78xe7VAAADVM_.jpg:large
[12:39:08] <trentster> https://pbs.twimg.com/media/CQ8ZUYlUcAA0d1k.jpg:large
[12:40:07] <trentster> https://pbs.twimg.com/media/CQtJ-9jUAAAZJO0.jpg:large
[12:40:23] <trentster> MrTrick_: thats all done in Vectric and pretty effortless to do
[12:40:27] <MrTrick_> trentster: looks pretty.
[12:40:49] <MrTrick_> NOT really anything like what I want to do though.
[12:42:13] <trentster> yes I know but I am trying to drive home the outcome of carving or engraving when the toolpath can vary the depth of cut
[12:42:42] <MrTrick_> true.
[12:42:52] <MrTrick_> how much is vectric?
[12:42:53] <trentster> maybe silver is different and you just want a diamond bit or something but you still want to be able to vary the width of the fonts which cambam wont do
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[12:43:29] <trentster> They have a lot of products - have a look on the website I think they start at $150 all the way up to $2k
[12:43:49] <trentster> I think they have trialsas well
[12:43:55] <trentster> *trials
[12:44:00] <trentster> So you can try it out
[12:44:13] <archivist> I should finish modding truetype tracer, started adding vcarve to it
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[12:44:55] <MrTrick_> anyone know how silver compares to alu, hardness wise?
[12:45:20] <MrTrick_> (sterling vs "a bit of scrap, I have no idea" grade)
[12:45:22] <trentster> Do you get softer metal than aluminium for cnc work?
[12:46:37] <MrTrick_> I made the mistake last time of using the same feedrates for my test piece (some spare PCB) as my real material (solid brass). *SNAP*
[12:46:57] <MrTrick_> my test piece is a piece of alu sheet cut to roughly the same shape as the real thing (silver pendant)
[12:47:06] <trentster> MrTrick_: http://lmgtfy.com/?q=metal+hardness+scales
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[12:47:33] <archivist> brass engraving is interesting
[12:47:56] <MrTrick_> trentster: is hardness scale always proportional to feed rate?
[12:48:14] <archivist> no
[12:49:58] <MrTrick_> (and yes okay, I asked the wrong question, rather than asking about feed rate or ease of cutting)
[12:50:29] <archivist> work hardening materials being awkward too
[12:51:51] <trentster> Someone should really make a good open source online feeds and speeds calculator
[12:52:20] <trentster> I should have added "intuitive" as well to the above
[12:52:26] <jthornton> aww you said good and open source
[12:52:37] <trentster> haha
[12:52:40] <jthornton> now you upped the anti
[12:53:27] <trentster> Yeah its the "intuitive" part that is gonna be the toughest challenge
[12:54:14] <jthornton> there is a simple calculator in this http://gnipsel.com/files/mill-g-code/
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[12:56:18] <trentster> Interesting - looking at MrTrick_ googled results I see Tungsten carbide is just under Diamond in the hardness scale - wow I knew it was hard but not that hard!
[12:57:47] <trentster> jthornton: thanks I have bookmarked it - but I am on a mac and would have to fire up a windows VM to use it I assume
[12:58:10] <jthornton> it's python :)
[12:58:26] <jthornton> never tried it in windoZe
[12:58:42] <trentster> aah cool then it would work on a mac
[12:58:43] <archivist> write it in php and run on your site :)
[12:59:18] <jthornton> I could do that if I had time to spare
[12:59:40] <archivist> here have ten minutes
[12:59:53] <jthornton> thanks
[13:00:09] <jthornton> are you sure you can spare it?
[13:00:11] <trentster> you can have 15 from me - you now got 25 minutes - go for it :P
[13:00:56] <trentster> nice site btw - bookmarking it - lots of nuggets there to peruse
[13:02:40] <jthornton> thanks
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[13:03:46] <trentster> jthornton: I'd love to see a screenshot of what your personal LinuxCNC panel looks like :-)
[13:04:29] <MrSunshine> hmm i wonder how much a toothed belt would flex over 1.5 meters
[13:04:40] <jthornton> which one?
[13:04:59] <SpeedEvil> there are eleven billion sorts of belt.
[13:05:05] <MrSunshine> hehe =)
[13:05:18] <SpeedEvil> From actual rubber, to carbon fibre reinforced ones that are almost as stiff as steel
[13:05:50] <SpeedEvil> http://www.gatescarbondrive.com/products/belts
[13:06:32] <trentster> jthornton: was that question for me?
[13:06:52] <MrSunshine> http://www.ebay.com/itm/T5-Timing-Belt-5mm-pitch-open-Loop-20mm-Wide-DIY-CNC-Milling-Plasma-Robotic-/121782181070?hash=item1c5ac89cce but its a 16mm version i have
[13:07:03] <MrSunshine> steel reinforced
[13:07:57] <jthornton> yes, which panel?
[13:08:38] <trentster> The one you use personally on your own go-to machine. I am sure its been heavily customized - you seem to be a master judging by your tutorials
[13:09:45] <jthornton> well I have a plasma, a mill and a lathe running LinuxCNC
[13:10:27] <trentster> Mill I guess
[13:10:35] <jthornton> the mill uses touchy with ngcgui and gremlin (back plot)
[13:11:06] <jthornton> the lathe and plasma use Axis with PyVCP panels
[13:11:16] <jthornton> the lathe also has ngcgui tab
[13:11:16] <cradek> I should check out ngcgui in touchy on my lathe(s)
[13:11:27] <cradek> I hear it's good for doing lathey stuff
[13:11:44] <jthornton> I do 90% of the ops on my lathe with ngcgui
[13:11:49] <cradek> wow
[13:12:18] <jthornton> http://gnipsel.com/shop/hardinge/hardinge.xhtml
[13:12:19] <cradek> can you realistically run it on just a touchscreen?
[13:13:03] <jthornton> yes, dewey made a large button pad I think to input numbers
[13:13:21] <jthornton> mine is using Axis so I have kb and mouse
[13:13:28] <trentster> jthornton: what the heck - show us all of em mate
[13:14:01] * jthornton is down in the beer cave atm
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[13:15:08] <trentster> heh - no worries - another time perhaps
[13:16:35] <MrTrick_> muahaha, this looks like success.
[13:17:09] * MrTrick_ abuses the toolpath features slightly
[13:41:40] <trentster> Ok my next dumb question - why is it I see people saying for e.g. a cast aluminium spindle mount is much stronger than a machined spindle mount?
[13:42:04] <trentster> Is there something special about the casting process that makes it better than extruded aluminium?
[13:42:23] -!- XXCoder has quit [Ping timeout: 265 seconds]
[13:43:03] <MrTrick_> I thought cast alu was quite weak, actually.
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[13:48:54] <SpeedEvil> Are they perhaps meaning 'forged' ?
[13:49:29] <ssi> mawn
[13:54:47] <archivist> trentster, strength is by design and material
[13:55:12] <SpeedEvil> You can make really strong rigid things in PLA.
[13:55:26] <SpeedEvil> it just needs more of it than steel.
[13:55:40] <archivist> you can make weak stuff in carbide
[13:55:42] <SpeedEvil> (not often, that much more of it)
[13:55:58] <SpeedEvil> Shape and cross section in general matters more than material.
[13:56:15] <SpeedEvil> Unless you have point-loads somewhere.
[13:58:20] <MrTrick_> spaghetti bridge!
[13:58:47] <MrTrick_> Well that was a terrible idea, in hindsight. Wax as a protective coating has a fatal flaw (paging icarus, paging icarus!
[13:59:01] <SpeedEvil> metals can be awesome for the seperate reason that tehy can be very homogenous and less vulnerable to buckling.
[14:04:03] <MrTrick_> bah, waste of a good pendant too.
[14:04:47] <MrTrick_> archivist: Tomorrow I'm going down to the shoe repair and engraving place, and see if they'll engrave it for me deep enough to paint fill.
[14:05:34] <archivist> MrTrick_, on clock dials we used a hard wax to fill
[14:05:47] <MrTrick_> (typically on a router one does inside work, then finishes by cutting out the piece. When the piece is already teeny tiny and delicate it's very hard to hold down, as I found.
[14:06:11] <MrTrick_> archivist: I've seen that from-scratch clock build that uses the proper hard wax, it looks very cool.
[14:06:20] <archivist> I make tiny parts on a stick
[14:06:53] <MrTrick_> will either use that or enamel paint flooded in carefully with an insulin syringe
[14:07:26] <archivist> spaghetti bridge https://www.youtube.com/watch?v=pZNTzkAR1Ho
[14:09:08] <MrTrick_> archivist: the clock materials are crazy, something like "use a clock wax, and then a clock polish, and then some clock silvering, and then some clock...........
[14:09:19] <MrTrick_> hyper-specialising. ^_^
[14:09:46] <archivist> its normal hard sealing wax
[14:10:25] <archivist> I usually let ex boss do the wax and silvering
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[14:13:26] <MrTrick_> gnight all
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[14:16:22] <CaptHindsight> archivist: wake me when it's made of actual pasta
[14:18:18] <archivist> CaptHindsight, did you break a tooth on that one?
[14:18:24] <CaptHindsight> https://www.youtube.com/watch?v=VRsKhVO-Utg Testing Shear Strength of Spaghetti
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[14:18:45] <CaptHindsight> http://ocw.mit.edu/courses/civil-and-environmental-engineering/1-105-solid-mechanics-laboratory-fall-2003/labs/pasta_03.pdf
[14:19:01] <CaptHindsight> looks like actual research has begun!
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[14:19:05] <ssi> :D
[14:20:44] <CaptHindsight> Ini's as structural members 101
[14:21:23] <archivist> the tape invalidates that test
[14:21:48] <ssi> I think the tape gives enough that it doesn't represent a constraint along the axis of the member
[14:21:52] <CaptHindsight> https://www.youtube.com/watch?v=fhdx2HTH7to NYIT Structures Pasta Bridge Build Off
[14:22:14] <CaptHindsight> I probably would have used reinforced lasagna noodles
[14:22:16] <ssi> anyone else think it's ironic that the strength of pasta class is taught by a guy named Bucciarelli?
[14:22:53] <archivist> that test was mostly tension
[14:25:49] <CaptHindsight> "Comparisons of the Dampening Factors of Engineered Pasta Granite Machine Bases" ok I made that one up
[14:26:11] <ssi> pasta wouldn't make a good aggregate
[14:26:17] <ssi> insufficient density :)
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[14:26:46] <ssi> CaptHindsight: I bought the silly car
[14:26:58] <ssi> https://scontent-atl3-1.xx.fbcdn.net/hphotos-xlt1/v/t1.0-9/12074547_10100795131587432_103389633417420732_n.jpg?oh=592db51ae3f253920e369e57d895ede7&oe=568AD797
[14:26:58] <archivist> silly boy
[14:27:11] <jthornton> very primitive dxf to G code converter http://gnipsel.com/files/dxf2g/
[14:27:13] <ssi> https://scontent-atl3-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/12065614_10100795131612382_4108694190510408695_n.jpg?oh=2a80ebe9e207a4e05339717d008d47b9&oe=56CEE716
[14:27:28] <jthornton> ssi, take a look see
[14:27:35] <jthornton> when you have a chance
[14:27:45] <malcom2073> ssi: Oooo stickers
[14:27:48] <ssi> jthornton: you oughta consider putting it on github
[14:27:56] <ssi> jthornton: go has some fancy support for public github repos
[14:28:05] <ssi> malcom2073: hah yeah they gotta go
[14:28:07] <jthornton> btw only the executable will work as you have to pass the file name
[14:28:11] <malcom2073> You'll have no power then!
[14:28:17] <ssi> I'll lose some horsepower if I scrape the stickers off
[14:28:25] <ssi> but I'll gain it all back by fixing the rod knock :)
[14:28:39] <archivist> that is the stripes, never take them off
[14:28:52] <malcom2073> Heh, why am I not shocked that it has rod knock with stickers like that :P
[14:28:56] <ssi> malcom2073: :)
[14:29:07] <jthornton> I messed with github once but got tired of trying to figure it out
[14:29:19] * jthornton wanders out
[14:29:24] <ssi> archivist: I always wanted to try putting a red stripe on one side and a blue stripe on the other and seeing if it helps me turn
[14:29:36] <archivist> hehe
[14:29:46] <CaptHindsight> i shit you not "Mechanical and rheological properties of fresh egg pasta as affected by shell egg production factors" http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2621.2012.03128.x/abstract
[14:29:53] <ssi> hah
[14:30:11] <malcom2073> SFW correlary of Rule 34
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[14:32:13] <CaptHindsight> ssi: how is the body?
[14:32:19] <ssi> mostly pretty good
[14:32:30] <ssi> there's one spot of rust, on the hatch right at the back lip
[14:32:34] <ssi> obviously weatherstripping failure
[14:32:45] <ssi> you can only see it by opening it and looking under the weatherstrip
[14:32:54] <ssi> there's a couple small dents on the right rocker, down as it curves under
[14:32:56] <ssi> probably jack damage
[14:33:08] <ssi> the frame rails have evidence of jack damage but no evidence of being tweaked from wrecking it
[14:33:25] <ssi> mostly the body fitment is pretty good, but the left door doesn't quite fit right, I think it's sagging hinge pins
[14:33:32] <ssi> the front bumper stays are missing
[14:33:47] <ssi> one piece of trim behind the right t-top is missing, and the chrome on the trim isn't in awesome shape
[14:34:01] <ssi> all the flex panels like the bumper covers and spoiler have paint issues, which is pretty common
[14:34:04] <ssi> body paint is good
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[14:34:22] <ssi> interior is mostly good, but the driver seat and door panel have bad spots
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[14:38:34] <ssi> shit i need the interior out of this one
[14:38:34] <ssi> http://atlanta.craigslist.org/atl/cto/5254296814.html
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[14:45:46] <probotix> linuxcnc.org seems to be down
[14:46:29] <Sync> only the front page
[14:48:09] -!- SEL [SEL!~SEL@net77-43-27-64.mclink.it] has joined #linuxcnc
[14:49:34] <probotix> http://www.linuxcnc.org/index.php/english/forum/49-basic-configuration/17021-emc2-auto-maximized-at-startup
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[14:57:39] <SEL> why i get a 403 error at linuxcnc.org ?
[14:59:52] -!- podarok has quit [Ping timeout: 268 seconds]
[15:06:00] -!- patrickarlt has quit [Ping timeout: 265 seconds]
[15:09:54] <SEL> it probably some weird joke of the destiny ?
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[15:12:02] <probotix> so any idea how to get axis to start in maximized mode?
[15:13:15] <Tom_itx> SEL, you're not a member
[15:13:44] <Tom_itx> or you didn't pay your interweb fees
[15:16:38] <malcom2073> SEL: The website is broken atm
[15:17:07] <probotix> the wiki works
[15:18:46] <Jymmm> Tom_itx: Where's my damn light man!?
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[15:21:46] <SEL> no problem ,I have already installed 2.7 :-)
[15:24:05] <CaptHindsight> maybe dreamhost isn't so dreamy after all
[15:24:13] <Jymmm> heh
[15:26:50] <CaptHindsight> what's been working well as a host for everyone here?
[15:26:57] <malcom2073> VPS ftw
[15:27:17] <malcom2073> I got tired of dealing with web hosts, couldn't find a decent one
[15:27:31] * SpeedEvil imagines VPS with virtual parport controlling CNC.
[15:28:03] <CaptHindsight> malcom2073: VPS with direct connection to internet? :)
[15:29:07] <malcom2073> CaptHindsight: Yeah
[15:30:46] <CaptHindsight> cloud to cloud network
[15:31:05] <Jymmm> IF it's VPS, it aint "direct", it's VIRTUAL =)
[15:31:19] <malcom2073> Virtually direct :P
[15:31:22] <CaptHindsight> with illusion of privacy server
[15:31:27] <Jymmm> lol
[15:32:10] <Jymmm> ther eis no privacy in the interwebz
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[15:32:39] <malcom2073> Virtually Private, Virtually Direct, They should include Virtual in the name ;)
[15:33:04] <Jymmm> malcom2073: What a great idea.... virtually
[15:33:27] <CaptHindsight> as long as the bill and payments are also virtual
[15:33:33] <malcom2073> The alternative is shell out a couple hundred a month for a dedicated box
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[15:34:18] <Jymmm> couple hundred?! Shit, for that I can colo
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[15:35:00] <Jymmm> Mmmmm... Bonded 10GigE pipes!
[15:35:03] <malcom2073> yummy
[15:35:16] <CaptHindsight> our tubes are cleaned daily
[15:36:27] <Jymmm> But, if you need a host check out http://BlueHost.com/
[15:36:39] <archivist> get a fixed ip, host on a sensible speed broadband
[15:36:47] <ssi> I have a place it could be hosted
[15:36:53] <ssi> if you're talking about linuxcnc.org
[15:37:27] <Jymmm> ssi: And 700MB ISO downloads?
[15:37:32] <ssi> sure
[15:37:37] <ssi> up to 2500G/mo
[15:37:38] <malcom2073> Jymmm: Get a CDN for that
[15:37:45] <Jymmm> cdn?
[15:37:47] <malcom2073> 2.5TB a month isn't much
[15:37:59] <malcom2073> Content Delivery Network
[15:38:04] <ssi> no, it's not a ton
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[15:38:12] <ssi> but it's a lot more than most cheap hosting packages give you
[15:38:20] <Jymmm> malcom2073: cdn for what?
[15:38:20] <ssi> and I have 16tb space on that box
[15:38:27] <malcom2073> [11:36:53] <ssi> if you're talking about linuxcnc.org
[15:38:27] <malcom2073> [11:37:27] <Jymmm> ssi: And 700MB ISO downloads?
[15:38:29] <ssi> well actually it's 11.5tb formatted, raid6
[15:38:57] <CaptHindsight> https://www.liquidweb.com/data-centers/colocation.html 5TB/mo for $150
[15:39:00] <Roguish> the iso
[15:39:04] <Roguish> the iso
[15:39:06] <Jymmm> malcom2073: unlimited bw/storage http://www.bluehost.com/shared
[15:39:17] <ssi> is $150 cheap? :P
[15:39:23] <Roguish> the iso's could be distributed by torrent...
[15:39:26] <malcom2073> Jymmm: Yep, shared.
[15:39:32] <Jymmm> malcom2073: so?
[15:39:35] <malcom2073> Try it :)
[15:39:43] <malcom2073> You're not gonna listen to anything I say anyway
[15:39:47] <Jymmm> malcom2073: I have for the last 6 years
[15:39:54] <malcom2073> Glad it's working for you
[15:40:42] <Jymmm> We have about 13 domains in them, no (unscheduled) issues.
[15:41:10] <Jymmm> have shell access too
[15:43:41] <CaptHindsight> the problem I've had with shared severs is when someone gets turned into a spambot
[15:43:50] <CaptHindsight> bandwidth goes to hell
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[15:46:38] <archivist> keeping on top of updates is a bind though
[15:50:22] <CaptHindsight> distributed redundant virtual vapor with better than cloud reliability
[15:51:09] * archivist puts up a virtual vapour barrier
[15:51:40] <Jymmm> CaptHindsight: it's all smoke and mirrors... virtually
[15:52:20] <CaptHindsight> illusionhost
[15:54:41] <CaptHindsight> one way keyless data security, once your data is encrypted it completely safe since there is no decryption possible, since it's one way and completely safe
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[15:55:30] <Deejay> re
[15:56:22] <Jymmm> CaptHindsight: Nah, easily decrypted using ROT26
[15:56:45] <ssi> CaptHindsight: while you're at it make it an excellent compression algorithm
[15:56:49] <ssi> one way compression and encryption
[15:56:54] <ssi> reduces your data to 99% its original size
[15:58:21] <ssi> here's a good strategy: count the number of ones and the number of zeroes in the file, and store the counts as a pair of ints
[15:58:24] <CaptHindsight> VBS
[15:59:15] <CaptHindsight> hmm the average is ~1:1
[15:59:38] <CaptHindsight> if we just approximate or round that should be good enough
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[15:59:52] <ssi> yeah but if you keep the actual counts then you can reconstruct the file size
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[16:00:48] <CaptHindsight> heh file size is just A x 1:1
[16:01:13] <CaptHindsight> too much space
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[16:24:05] <Tom_itx> Jymmm, tomorrow
[16:24:37] <Tom_itx> post can't get in a hurry or they couldn't justify express
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[16:24:59] <Jymmm> heh
[16:25:25] <Tom_itx> it shipped from Ok and i'm in Ks
[16:25:32] <Tom_itx> ~150 mi away
[16:25:48] <Tom_itx> not like it's coming from china..
[16:25:48] <Jymmm> Tom_itx: I'm just glad that you did NOT order the Fenix light(s), and got the other one instead I linked you to.
[16:26:05] <Tom_itx> what other one?
[16:26:18] <Tom_itx> uh huh
[16:26:43] <Jymmm> The one I had linked to for $24
[16:27:01] <Tom_itx> i didn't see that one
[16:33:17] <Tom_itx> hah
[16:33:19] <Tom_itx> <Jymmm> Santa Loves me... http://www.fenixlight.com/viewproduct.asp?id=144
[16:34:41] <Tom_itx> http://www.youtube.com/watch?v=WuoPz7hm7Co
[16:34:51] <Tom_itx> that was back when YOU were lookins
[16:34:52] <Tom_itx> g
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[16:45:54] <Jymmm> Tom_itx: When you are storing the light, partially unscrew the battery cover until the light won't turn on. This will prevent accidental turn on (in a pack) and no parasitic drain on the battery.
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[17:12:28] <membiblio> Does anyone have a code sample that relates to taking output from a python script and displaying a string somewhere in the axis gui or a pyvcp panel?
[17:13:57] <MrSunshine> hmm, a system to fold away wheels on a machine .. what would that be called ?
[17:14:11] <membiblio> Landing Gear?
[17:14:12] <MrSunshine> say i have 4 coasterwheels, then when i use the machine i want to set it down on rubber feet insted
[17:14:51] <membiblio> The rubber feet will have to lift while the wheels retract i/e landing gear (c) 2015 me :)
[17:15:19] <archivist> feet on screwed rod
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[17:15:58] <MrSunshine> i want it lever actuated .. just press a lever and the machine goes to wheel mode =)
[17:16:15] <MrSunshine> so i can move it around .. my shop is to small for stationary machines
[17:16:54] <archivist> you can get braked wheels
[17:17:17] <membiblio> That would mean the wheels retract or come down and take the weight off the rubber feet - to move the machine - right?
[17:17:32] <MrSunshine> yes
[17:17:45] <MrSunshine> archivist: then i have to run around the machine and put the break in on all of them =)
[17:18:19] <CaptHindsight> air bearing floor, or hovercraft machine bases
[17:18:24] <MrSunshine> ahh yes!
[17:18:32] <archivist> what a hardship!
[17:18:34] <membiblio> is there anything like <number> but will accept a <string>?
[17:19:38] <archivist> MrSunshine, common to only put the brakes on one side/front
[17:20:07] <MrSunshine> archivist: yeah but feels like the machine wont stand as good then
[17:20:19] <MrSunshine> dont realy want it to move around when i work on it (table saw)
[17:20:29] <archivist> good enough probably
[17:21:11] <MrSunshine> i could use a scissorjack i guess :P
[17:21:18] <MrSunshine> to push something with the wheels down =)
[17:22:11] <archivist> these dont move much if anything with 400kg on http://www.collection.archivist.info/archive/DJCPD/PD/2013/2013_04_18_glass_trolley/IMG_1536.JPG
[17:22:15] <MrSunshine> but like i said .. might be good enough with 2 brake wheels =)
[17:22:52] <MrSunshine> archivist: but then add some saw dust on the floor etc ...
[17:22:55] <archivist> we had two brakes on the early trolleys but only one on the later
[17:22:58] <MrSunshine> and small contact area on the wheels
[17:23:21] <archivist> weight of the machine makes a serious difference
[17:23:47] <archivist> add a storage shelf under the machine too
[17:23:49] <MrSunshine> i move it around by hand .. lifting it
[17:23:51] <MrSunshine> :P
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[17:25:24] <MrSunshine> http://www.grampasworkshop.net/sawtbl.jpg that is not a bad idea tho ... cause it spews out dust downwards ..
[17:25:40] <MrSunshine> might be a wood chucking project =)
[17:25:54] <ssi> how much wood could a wood chuck chuck?
[17:26:16] <MrSunshine> bout 3 quarts
[17:26:36] <zeeshan> LOL
[17:26:49] <zeeshan> speaking of weight
[17:26:51] <ssi> zeeee
[17:26:58] <zeeshan> i used the lathe as an anchor to pull my rx7 up the driveway
[17:27:04] <ssi> lol
[17:27:09] <zeeshan> thing did not budge
[17:27:12] ssi is now known as zeessi
[17:27:18] <archivist> and onto the scrap truck ?
[17:27:29] * archivist ducks
[17:27:33] <zeeshan> i could not move the lathe on skates yesterday
[17:27:41] <zeeshan> i was using a 5 ft 1" round pipe
[17:27:42] <zeeshan> and i bend it
[17:27:44] <zeeshan> *bent it
[17:27:50] <zeessi> I saw a neat tool at northern the other day
[17:27:50] <zeeshan> i moved a little, but it rolled right back
[17:27:57] <zeessi> it's a heavy duty lever with a hook on the end and a couple bearings
[17:28:04] <zeeshan> will need to come up with a different moving plan
[17:28:18] <zeessi> http://www.northerntool.com/shop/tools/product_200646684_200646684
[17:28:19] <zeessi> bam
[17:28:30] <archivist> use scaffold pipe
[17:28:37] <zeessi> this one's a little different than the other one I saw
[17:28:44] <zeeshan> archivist: itll crush
[17:28:46] <zeessi> http://www.northerntool.com/shop/tools/product_200326481_200326481 there it is
[17:28:48] zeessi is now known as ssi
[17:28:55] <zeeshan> i dunno why i wrote solid pipe
[17:28:58] <zeeshan> it was a solid bar that bent
[17:28:59] <zeeshan> not pipe..
[17:29:11] <zeeshan> just hr 1018
[17:29:21] <ssi> 1018 is too ductile
[17:29:37] <ssi> I bent a piece of 1018 1" cr trying to get my hangar door back on the track
[17:29:39] <zeeshan> 4340?
[17:29:41] <archivist> there are a few grades of scaffold pipe, never bent one yet
[17:31:39] <zeeshan> i broke my toe jack too
[17:31:43] <zeeshan> bad design :P
[17:31:49] <zeeshan> it was just 1/2" plate welded together
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[17:34:33] <archivist> got to spread the load
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[17:35:13] <aventtini6> hello guys
[17:35:14] <aventtini6> :)
[17:36:23] <archivist> you might need http://www.liftingequipmentstore.com/steerman-load-moving-skate-systems-204-c.asp
[17:36:50] <archivist> I found skates harder to use
[17:36:55] <ssi> much rather have this
[17:36:55] <ssi> https://en.wikipedia.org/wiki/Boeing-Stearman_Model_75
[17:38:06] <aventtini6> i have seen on ebay
[17:38:13] <aventtini6> they was like 350
[17:38:21] <aventtini6> there was 2 off them
[17:39:19] <zeeshan> that looks expensive archivist
[17:39:40] <archivist> easy to slip off them too
[17:39:54] <JT-Shop> ssi, what does git hub do that hosting on my site doesn't?
[17:40:15] <ssi> JT-Shop: go install github.org/gnipsel/dxf2gcode
[17:40:24] <ssi> will fetch, build, and install to $GOPATH/bin
[17:40:29] <JT-Shop> ok
[17:40:40] <jdh> zeessi: they call those 'johnson bars' here
[17:41:03] <ssi> jdh: johnson bar is what we call a manual, lever operated system for landing gear or flaps in airplanes
[17:41:29] <jdh> yeah, on trains also
[17:41:34] <ssi> but yeah looks like northern agrees
[17:41:35] <ssi> http://www.northerntool.com/shop/tools/NTESearch?N=0&Ntk=All&Ntt=johnson+bar&Nty=1&D=johnson+bar&Ntx=mode+matchallpartial&Dx=mode+matchallpartial&cmnosearch=PPC&utm_source=google_PPC&utm_medium=HandTools&utm_campaign=Generic&utm_content=johnson%20bar&mkwid=sOcpTQsns&pcrid=74406695111&mtype=e&devicetype=c&storeId=6970&langId=-1&type=search&gclid=CPri0JDBwsgCFYE8gQodUEINcA
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[17:42:00] <jdh> we use them for moving machines in place
[17:43:41] <JT-Shop> do I have to setup github first?
[17:43:49] <ssi> you'll need a github account
[17:44:12] <ssi> also when you start putting golang stuff on github, that sorta defines your package names
[17:44:32] <ssi> so your global namespace for any code that you develop will be github.com/gnipsel or whatever your github user is
[17:44:52] <JT-Shop> ok
[17:45:02] <ssi> so for instance, here's a public, open source library I created
[17:45:02] <ssi> https://github.com/ianmcmahon/encoding_ssh
[17:45:19] <ssi> so you can import "github.com/ianmcmahon/encoding_ssh" in your code and go will fetch it for you when it fetches dependencies
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[17:50:58] <JT-Shop> I might wait on that when it gets more complicated
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[17:54:14] <zeeshan> ssi
[17:54:16] <zeeshan> that lever bar
[17:54:19] <zeeshan> in the link you posted
[17:54:21] <zeeshan> how does it work
[17:54:38] <zeeshan> is there a mechanical advatange built into it
[17:54:42] <zeeshan> on top of the lever action ?
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[17:55:07] <ssi> no it's just lever action
[17:55:19] <ssi> but it's hooked severely so you get a convenient angle
[17:55:23] <zeeshan> why does it look like it has a pivot
[17:55:30] <zeeshan> ah
[17:55:32] <ssi> it pivots on the bearings
[17:55:33] <ssi> wheels
[17:55:47] <zeeshan> hmmm that would be nice to have!
[17:55:56] <ssi> yeah for $70 it seems worthwhile
[17:55:58] <zeeshan> i wonder if i can buy it locally
[17:56:12] <ssi> you have northern tool up there in the northern country?
[17:57:05] <daxro> I used one of those pry bars on wheels once or twice there very handy and save getting hernias
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[17:59:36] <zeeshan> NO
[17:59:39] <zeeshan> er caps
[18:00:45] <ssi> zeeshan: god this really doesn't look fun http://www.egrapevine.info/article-image/124
[18:00:47] -!- automata has quit [Ping timeout: 264 seconds]
[18:01:24] <archivist> zeeshan, you can also hire those machine skates
[18:01:34] <ssi> guy at Z1 suggested that best way is to do it on a lift, drop the entire front suspension out with crossmember, and lower the engine/trans together
[18:02:23] <archivist> hehe he has the crane in 90 deg out
[18:02:35] <ssi> yea he said it wouldn't reach from the front :P
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[18:05:14] <ssi> hah even better
[18:05:14] <ssi> http://i460.photobucket.com/albums/qq330/gt1_rare_f8/IMG_0034-1.jpg
[18:06:39] <CaptHindsight> when we were kids we used to use a pipe and a fence, and hardly anyone got hurt :)
[18:07:06] -!- automata_ has quit [Ping timeout: 272 seconds]
[18:07:17] <ssi> there's almost no clearance in this car
[18:07:20] <ssi> that engine is STUFFED in there
[18:08:01] <zeeshan> lol ssi
[18:08:08] <pcw_home> yeah pretty big engine in that tin can
[18:08:32] <ssi> pcw_home: that's pretty much my style :)
[18:10:06] <pcw_home> When I was a kid my parents had a 1957 Chevy station wagon with a inline 6
[18:10:08] <pcw_home> I think it had a clear 1 foot on either side of the engine...
[18:10:13] <ssi> ha yep :D
[18:10:24] <ssi> straight 6s are super easy to fit
[18:10:49] <ssi> the tt is a wide deck V6 with wide ass twin cam heads and then the two turbos and associated piping stuffed on either side of that
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[18:11:10] <ssi> all in a tiny 2 seat body
[18:11:58] <archivist> I stood either side of a 4cyl viva engine to put it back in acres of space
[18:12:18] <daxro> TT's are massive compared to my car
[18:12:53] <ssi> they're bigger than miatas :P
[18:13:17] <daxro> https://goo.gl/photos/ysNXcPk5LtVh2L7M8
[18:13:49] <ssi> fair enough :)
[18:13:58] <daxro> lol
[18:14:24] <ssi> it looks like it started life as a 50's MG :P
[18:15:15] <daxro> Started life as a hayabusa motorbike haha
[18:15:19] <ssi> hahah
[18:16:58] <daxro> Things we get up to in the garage! and now my cnc milling getting there, who only knows what is next!
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[18:18:09] <aventtini6> guys one opinion on the china edgefider?
[18:18:12] <aventtini6> any good?
[18:18:24] <ssi> the one I had, the rubber inside broke easily
[18:18:33] <ssi> I buy starret or B&S edge finders, they're not much more money
[18:19:37] <anomynous> get a 3d taster :]
[18:19:46] <aventtini6> i have 4 of them
[18:19:48] <aventtini6> :))
[18:19:49] <ssi> how do you taste in three dimensions?
[18:19:59] <aventtini6> ninken
[18:20:02] <aventtini6> hoffman
[18:20:04] <ssi> sounds delicious
[18:20:16] <aventtini6> the tips are expensive
[18:20:20] <anomynous> ssi: first you put something on your tongue. Then something else under it. And last something on both sides of it.
[18:20:24] <aventtini6> ninken is 250e
[18:20:25] <ssi> anomynous: OH
[18:20:26] <anomynous> mm
[18:20:32] <aventtini6> only the tip
[18:20:33] <anomynous> one more. have to cover the tip of it.
[18:20:35] <anomynous> yea
[18:20:37] <ssi> just the tip
[18:20:40] <anomynous> dont use too big bites
[18:20:45] <anomynous> or you will have problems
[18:21:10] <aventtini6> hoffman is 30e the tip
[18:22:00] <aventtini6> i have good blum baluff dut i dont have the Infrared interface for it plus my spindle dont index
[18:22:27] <aventtini6> http://www.aliexpress.com/item/CNC-Tool-Electronic-Optical-edge-finder-LED-Sound-Shank-OEF-20L-TYPE/1848081134.html?spm=2114.01020208.3.90.K8vrap&ws_ab_test=searchweb201556_2,searchweb201527_2_71_72_73_74_75,searchweb201560_9
[18:22:45] <aventtini6> it says 0,005mm
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[19:51:45] <Contract_Pilot> Sup.
[19:52:08] <Contract_Pilot> looks like all the good motor/driver deals are gone... now
[19:53:16] <ssi> aw
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[19:55:26] <Contract_Pilot> 9.00 ones went to 122.00 now hahaha
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[19:55:49] <ssi> lol
[19:55:53] <ssi> I got four of the newegg ones
[19:55:59] <ssi> they claim to have been shipped but the tracking number isn't useful yet
[19:56:12] <Wolf_> probably cause someone kept buying them all up :P
[19:56:42] <ssi> oh maybe it is active
[19:56:43] <ssi> https://tools.usps.com/go/TrackConfirmAction?tLabels=LS152571045CN+
[19:57:15] <Wolf_> mine from newegg have china tracking numbers
[19:57:31] <ssi> that's a china tracking number
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[19:58:56] <XXCoder> malcom2073: just got mine :)
[20:00:23] <Contract_Pilot> Yea, mine also coming from china.
[20:01:03] <XXCoder> I ws talking about refund :)
[20:01:15] <XXCoder> unless you was talking to some comment before I rejoined
[20:01:26] <ssi> what did you get refunded?
[20:02:29] <Contract_Pilot> Well, I should ahve 29 of the 9.00 ones any day!
[20:02:37] <ssi> 29?! hah
[20:02:47] <ssi> no wonder the price went up ;)
[20:02:47] <XXCoder> ssi: oh that seller had 3d printers for cheap
[20:02:59] <Contract_Pilot> Yea, 29 snagged another 9 last night.
[20:03:25] <Contract_Pilot> XXcoder glad you got a refund
[20:03:27] <jdh> I never got a notice
[20:03:28] <XXCoder> but it turns out to be scam. surpise! :P I guessed so but worth risk
[20:03:37] <XXCoder> thanks
[20:03:50] <Contract_Pilot> No risk no reward.
[20:04:19] <Contract_Pilot> Dont take the test? How do you know if you will pass!
[20:04:42] <XXCoder> it helped that aliexpress is eschow service
[20:04:46] <XXCoder> less risk than say ebay
[20:04:53] <Contract_Pilot> Yep.
[20:10:50] <Praesmeodymium> oh so more mototrs are showing up if ya got 9 more last night
[20:10:58] <Praesmeodymium> I wonder what the stock is like
[20:11:27] <Contract_Pilot> Not sure... that e-mail goes un answerd
[20:11:43] <Contract_Pilot> But looks like he is jacking the price.
[20:12:00] <ssi> they're probably going to be junk too
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[20:12:41] <Praesmeodymium> the ones we got so far dont seem to be junk
[20:13:06] <Contract_Pilot> The ones I have recived have all tested good.
[20:13:10] <ssi> that's good
[20:13:14] <Praesmeodymium> ofc I have to rely on Contract_Pilot's findings since I havent gotten off my ass to do more than vicually inspect
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[20:14:18] <Praesmeodymium> motors turn, have a resitance on coils, I've seen video of him getting them to move, but thats not hooking it up to a load and running some shit
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[20:15:44] <Contract_Pilot> Need a way to measure the motors
[20:15:57] <Praesmeodymium> well if you happen to grab any nema 8's I want 1 more and havent managed to scalp one more yet
[20:16:16] <Contract_Pilot> The 12V 21A Supply operating at 14V 13.8 for Ham http://www.stevenrhine.com/wp-content/uploads/2015/10/12V-21A-PSU-14V-Stable-1-1024x576.jpg
[20:16:37] <Contract_Pilot> No nema8's
[20:16:52] <Contract_Pilot> Well no telling what they will be sending from china.
[20:17:11] <Contract_Pilot> Not real happy with them sending form china.
[20:17:18] <Contract_Pilot> they way they pack them
[20:18:55] <Contract_Pilot> they sending a replacement for this one. Rather banged up! http://www.stevenrhine.com/wp-content/uploads/2015/10/Driver-Scratched-2-1024x576.jpg
[20:20:17] <Praesmeodymium> oh yeah, i got one with a motor wire that got damaged in transit, I wasnt too happy but its a wire not like I was suspcious of trying to dump 3 amps through the size and length anyway
[20:20:48] <Valen> if you are after a high current 12v supply look at blade center power supplies
[20:21:00] <Valen> you can get hundreds of amps for like $100
[20:21:26] <Wolf_> I got 100A for $27
[20:21:43] <ssi> I got a couple of DL380G5 server power supplies for $35 apiece on amazon last year
[20:21:47] <ssi> they're 72A 12v supplies
[20:21:59] <ssi> just gotta figure out what to jumper on them to make them switch on
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[20:47:20] <XXCoder> wow http://adequateman.deadspin.com/the-xbox-one-is-garbage-and-the-future-is-bullshit-1736054579
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[20:48:40] <andypugh> ssh -Y andypugh@mill.local / halcmd loadusr halmeter -s pin motion.program-line Is a very handy way to monitor a remote machine.
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[21:17:40] <Deejay> gn8
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[21:36:29] <Erant> So I bought this cheapo $20 Dell Optiplex GX620 to run LinuxCNC on. Without doing anything to it, I get ~40us of jitter on the servo thread. With isolcpus=1, that goes down to maybe 25us. With idle=nomwait I go down to about 15us. With idle=poll I hold steady at around 4us.
[21:36:54] <Erant> Obviously this processor doesn't like traversing C-states. Is there anything more power friendly than idle=poll I can use?
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[21:37:44] <Erant> Apparently I'll be software stepping for a while, because my 5i25 won't be here for another 1-2 weeks. I think.
[21:38:15] <Erant> But I'm running 2048 line encoders on my servos so if I want any kind of speed I need a very high step frequency.
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[21:45:16] <PCW> no going to be running very fast in any case with 8192 counts/turn and software stepping
[21:45:42] <PCW> thats 160 KHz at 1200 RPM
[21:46:36] <Erant> Right. I'm willing to deal with it until I get the 5i25.
[21:47:24] <PCW> software stepping will likely not work to more than 100 KHz with 0 latency
[21:47:59] <PCW> (faster with plug in parallel ports than MB ports)
[21:48:13] <Tom_itx> .
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[21:48:43] <Erant> Interesting. Why do you figure? MB ports would go through the southbridge, so it's connected via HT to the main CPU.
[21:48:52] <Erant> Or whatever bus Intel has cooked up these days to wire up the SB
[21:49:07] <PCW> this is because MB ports almost always have a LPC interface which typically makes each transaction take about 2-3 usec
[21:50:00] <Erant> oh lame.
[21:50:05] <PCW> even 50 KHz often slows the CPU to a crawl
[21:51:03] <PCW> PCI cards are better, maybe .5 to 1 usec depending on MB and how many bridges you are traversing
[21:51:37] <Erant> Fair enough. Sounds like it's not worth the hastle. Maybe I'll give Mesa a ring to see if I can pick the boards up instead of shipping. Heard they're swamped though.
[21:51:53] <PCW> that is so
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[22:00:38] JT-Shop2 is now known as JT-Shop
[22:00:55] <JT-Shop> ssi, https://github.com/jthornton now to figure out what my password is lol
[22:04:10] <andypugh> zeeshan: There is a nice spindle motor for your lathe sat outside at work waiting to be scrapped. 475kW.
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[22:06:04] <andypugh> I assume it used to be an axle dyno, so needed to be able to manage vehicle wheel torques and speeds. It’s not small.
[22:07:01] <DaViruz> i'd imagine there are some beefy brake resistors somewhere to ho with it?
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[22:11:04] * JT-Shop thinks a Weihenstephaner is in order I only tipped the scales at 3152 ounces
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[22:18:05] <andypugh> That’s only slightly more than me.
[22:18:18] <andypugh> And I am only about 2’ tall.
[22:23:30] <JT-Shop> looking for 180 by end of the year... tired of being obese
[22:23:43] <JT-Shop> now I'm down to overweight lol
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[22:24:07] <Tom_itx> JT-Shop, still under 2 bucks
[22:24:20] <JT-Shop> yep 197
[22:24:31] <JT-Shop> might not be tuesday lol
[22:24:40] <JT-Shop> depends on how much Pete feeds me
[22:24:54] <Tom_itx> you can bike it off
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[22:25:21] <JT-Shop> that's what I'm doing, as well as changing my dietary habits
[22:25:49] <Tom_itx> see food diet?
[22:26:10] <JT-Shop> yea lol, just don't eat carbs during the day so I eat less
[22:26:21] <JT-Shop> 53 pounds down, 17 to go :)
[22:27:21] <JT-Shop> ssi, you still around?
[22:27:22] <Tom_itx> 2944 dripping wet here
[22:27:34] <Tom_itx> but that's never really been my problem
[22:27:42] <Tom_itx> more bp here
[22:28:19] <JT-Shop> I think the biking is what dropped my pressure to 120/70
[22:28:27] <malcom2073> oz? really? At least use a reasonable measurement: 13.1 stone
[22:28:37] <Tom_itx> mine spikes through a day
[22:28:49] <JT-Shop> it was like 140/95
[22:29:27] <Tom_itx> 138/81 earlier but it will drop to 12ish/70ish later
[22:29:45] <JT-Shop> I'm 14.071428571 stone
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[22:30:20] <Tom_itx> 13.214285
[22:30:28] <JT-Shop> looking to stay < 13 stone
[22:30:54] <JT-Shop> I do like hexchat better than xchat
[22:30:55] <Tom_itx> you'll live longer
[22:31:00] <Tom_itx> hmm
[22:31:10] <Tom_itx> on linux?
[22:31:17] <JT-Shop> that's my plan
[22:31:18] <Tom_itx> been using xchat
[22:31:24] <JT-Shop> yep linux
[22:31:38] <andypugh> Apparently I weigh 26 1/2 Cloves.
[22:32:02] <JT-Shop> now that's a new one for me lol
[22:32:42] <malcom2073> Wow
[22:32:42] <andypugh> https://en.wikipedia.org/wiki/English_units#/media/File:English_mass_units_graph.svg
[22:32:46] <malcom2073> google doesn't have firkin conversions
[22:32:57] <JT-Shop> ah that is 168.275 arratel
[22:32:58] <malcom2073> I'm 2.1 firkins
[22:33:43] <JT-Shop> I wonder how many sacks I am
[22:34:19] <andypugh> About half, I think.
[22:35:11] <JT-Shop> yep a tad over a half a sack
[22:36:33] * JT-Shop wanders out to the deck
[22:38:44] <zeeshan> zzzzzzzzzzz
[22:39:00] <Tom_itx> you manage to budge your lathe?
[22:39:09] <zeeshan> just got home from work
[22:39:20] <zeeshan> i got friends coming over fri
[22:39:28] <zeeshan> we're gonna lever it up together
[22:39:40] <zeeshan> one person w/ a lever will ensure machine doesnt roll back
[22:39:41] <Tom_itx> serve the beer after it's done...
[22:39:43] <zeeshan> the other 2 will move it forward
[22:40:58] <zeeshan> todays goal is : oil change
[22:41:03] <zeeshan> and put the trans and spindle motor back on the machine
[22:41:12] <zeeshan> (car oil change - unrelated to machine)
[22:41:12] <zeeshan> :P
[22:41:23] <Tom_itx> yeah... add weight back to it before you move it!
[22:41:32] <zeeshan> the thing is
[22:41:36] <zeeshan> i wont be able to access that area easily
[22:41:44] <zeeshan> once its bolted on
[22:41:57] <zeeshan> er
[22:42:00] <zeeshan> once it's moved into spot
[22:42:35] <PetefromTn_> jeez man helping my daughter with her math homework is making me depressed ;)
[22:44:10] <Wolf_> can’t math?
[22:44:20] <PetefromTn_> apparently not hehe
[22:45:18] * PetefromTn_ can't freakin' solve for X damnit!!
[22:46:00] <Tom_itx> x is the unknown
[22:46:22] <PetefromTn_> yeah I know man
[22:46:36] <PetefromTn_> I am kinda kidding sorta ;)
[22:46:38] <Tom_itx> been doing that here lately as well
[22:46:58] <PetefromTn_> here's one
[22:47:20] <PetefromTn_> 4(R+3)=W for R
[22:47:30] <PetefromTn_> simple right LOL
[22:48:05] <zeeshan> lol
[22:48:11] <zeeshan> divide both sides by 4
[22:48:19] <zeeshan> subtract 3
[22:48:39] <zeeshan> if you ever are unsure
[22:48:47] <PetefromTn_> I got (R+3)=W/4
[22:48:58] <zeeshan> subtitute a value for r and w
[22:49:05] <PetefromTn_> R+3=W/4
[22:49:07] <zeeshan> and see of the left hand side of the equation equals the right
[22:49:18] <PetefromTn_> r=w/4-3
[22:49:27] <zeeshan> yep
[22:49:30] <malcom2073> That's correct
[22:49:37] <zeeshan> how old is your daughter?
[22:49:39] <PetefromTn_> I was hopin so LOL
[22:49:42] <PetefromTn_> don't ask
[22:49:49] <PetefromTn_> its embarassing
[22:49:53] <zeeshan> tell meeeeee
[22:49:55] <Tom_itx> ~14 ish
[22:49:57] <zeeshan> im curious when they learn this
[22:50:05] <PetefromTn_> heres another one
[22:50:05] <malcom2073> Two variable is... 5th grade?
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[22:50:20] <malcom2073> no, middle school, so 6th or 7th
[22:50:23] <PetefromTn_> 2x+B=W
[22:50:28] <malcom2073> trying to remember when I learned algebra heh
[22:50:40] <PetefromTn_> for X
[22:50:43] <Tom_itx> still trying to find a use for it
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[22:50:50] <Tom_itx> i prefer geometry etc
[22:50:52] <zeeshan> Tom_itx: what!!
[22:50:53] <PetefromTn_> me too
[22:50:56] <zeeshan> i use it all the time!!
[22:51:01] <malcom2073> I use calculus all the time, it depends on what you're doing
[22:51:02] <Tom_itx> i'm happy for you
[22:51:09] <zeeshan> if youre not using it
[22:51:11] <zeeshan> youre making your life harder
[22:51:12] <zeeshan> !
[22:51:25] <PetefromTn_> I got 2x-B=W-B
[22:51:40] <malcom2073> 2x=W-B
[22:51:46] <PetefromTn_> 2X=W-B
[22:51:47] <malcom2073> If you do 2x+B-B, you get 2x
[22:51:53] <Tom_itx> x= w/2-b
[22:51:59] <PetefromTn_> X=(W-B)/2
[22:52:05] <malcom2073> PetefromTn_ Yep
[22:52:08] <zeeshan> look at us folks
[22:52:11] <zeeshan> we're a buncha old farts
[22:52:13] <PetefromTn_> Woohoo
[22:52:15] <zeeshan> helping pete's kid with math
[22:52:15] <zeeshan> haha
[22:52:18] <PetefromTn_> I got two right LOL
[22:52:22] <malcom2073> Tom_itx: You can't divide 2 from w without dividing 2 from b
[22:52:34] <PetefromTn_> I appreciate it because it has been so damn long since I did this stuff its not even funny
[22:52:35] <Tom_itx> yeah that's right
[22:52:46] <_methods> science goin on up in here
[22:52:50] <PetefromTn_> so its wrong?
[22:52:54] <malcom2073> zeeshan: Give it 20 years once you get out of school
[22:52:56] <_methods> arithmetics
[22:52:57] <malcom2073> You *really* do lose a lot
[22:53:03] <Tom_itx> PetefromTn_, no i was
[22:53:04] <malcom2073> PetefromTn_: No, you're correct
[22:53:06] <PetefromTn_> I sure as hell did LOL
[22:53:10] <zeeshan> malcom2073: arent you like 18
[22:53:11] <zeeshan> :D
[22:53:14] <malcom2073> zeeshan: Nope :P
[22:53:19] <PetefromTn_> one last one
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[22:53:31] <Tom_itx> see what google says
[22:53:33] <PetefromTn_> X(1+Y)=Z for C
[22:53:36] <PetefromTn_> forX
[22:53:39] <malcom2073> There's no C there!
[22:53:39] <PetefromTn_> not C LOL
[22:53:40] <malcom2073> Oh heh
[22:53:53] <malcom2073> Divide out 1+Y, that one is fairly easy
[22:54:01] <Tom_itx> we're doing that with powers here
[22:54:16] <PetefromTn_> so X=z(1+Y)
[22:54:23] <zeeshan> no
[22:54:26] <malcom2073> z/(1+y)
[22:54:26] <PetefromTn_> damn
[22:54:29] <malcom2073> Divide out
[22:54:39] <PetefromTn_> yeah forgot the divide slash LOL
[22:54:40] <malcom2073> Parens important there
[22:54:42] <zeeshan> PetefromTn_: do you remember bedmas?
[22:55:31] <PetefromTn_> isnt that an anacronym for order like pemdas
[22:55:37] <PetefromTn_> or something
[22:55:38] <zeeshan> yes
[22:55:48] <PetefromTn_> whats bedmas
[22:55:50] <zeeshan> brackets exponnents division multiplication addition asubtraction
[22:55:56] <zeeshan> its the order of operations you gotta do
[22:56:02] <Tom_itx> 35x^2 Y^3 z^4 + 45x^4 y^3 z^2 /-5x^2 Y^2 z
[22:56:03] <PetefromTn_> OK same thing then
[22:56:03] <Tom_itx> there
[22:56:06] <Tom_itx> solve that
[22:56:12] <PetefromTn_> no thank you LOL
[22:56:14] <_methods> FU
[22:56:16] <_methods> lol
[22:56:39] <_methods> x=the right answer
[22:56:48] <malcom2073> Tom_itx: http://www.wolframalpha.com/input/?i=solve+35x%5E2+Y%5E3+z%5E4+%2B+45x%5E4+y%5E3+z%5E2+%2F-5x%5E2+Y%5E2+z+for+x
[22:56:50] <malcom2073> :P
[22:56:54] <PetefromTn_> I thank you and my Daughter thanks you... take a bow guys!
[22:57:07] <PetefromTn_> hehehe
[22:57:08] <Tom_itx> -7yz^3 - 9x^2yz
[22:57:08] <zeeshan> if you solve for z
[22:57:09] <zeeshan> you get
[22:57:25] <zeeshan> wat
[22:57:47] <zeeshan> what are we solving for!
[22:57:54] <Tom_itx> simplify
[22:57:58] <Tom_itx> you can't solve it
[22:58:01] <zeeshan> for z i get 9x^4 y^2 / 5
[22:58:01] <zeeshan> :P
[22:58:09] <malcom2073> http://www.wolframalpha.com/input/?i=simplify+35x%5E2+Y%5E3+z%5E4+%2B+45x%5E4+y%5E3+z%5E2+%2F-5x%5E2+Y%5E2+z
[22:58:21] <PetefromTn_> jeez man you're givin me a headache
[22:58:26] <Tom_itx> hah
[22:58:39] <PetefromTn_> zeeshan hey man I had a nail biter at work today LOL
[22:58:48] <zeeshan> what happened
[22:59:01] <Tom_itx> PetefromTn_, that's the next chapter... better get ready :D
[22:59:11] <PetefromTn_> well I finished this sweet little mid pipe from stainless for an RX7
[22:59:18] <PetefromTn_> and was getting ready to head home
[22:59:28] <malcom2073> I had to do some stupid polynomials for something recently
[22:59:33] <malcom2073> Oh yeah, calculating out checksums for QR codes
[22:59:34] <PetefromTn_> when they bring me this brand new precision turbo cold side housing
[22:59:57] <PetefromTn_> and a cast aluminum elbow marked for position
[22:59:58] <malcom2073> Reed-Solomon error correction
[23:00:03] <zeeshan> lol
[23:00:25] <PetefromTn_> I have never welded on that and if I screwed it UP I screw up a 2000 dollar turbo LOL
[23:00:36] <Tom_itx> PetefromTn_, guess what?
[23:00:40] <PetefromTn_> I managed to stick it and make it look decent
[23:00:44] <PetefromTn_> Tom_itx what?
[23:00:47] <zeeshan> nice man!
[23:00:48] <Tom_itx> better not screw it up!
[23:00:53] <PetefromTn_> I know right
[23:00:55] <PetefromTn_> no pressure
[23:01:10] <PetefromTn_> you would have been proud of my midpipe shit was CLEAN!!
[23:01:32] <zeeshan> no pix?
[23:01:48] <PetefromTn_> oh yeah I actually did snap one or two LOL
[23:01:51] <PetefromTn_> hang on
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[23:06:07] <PetefromTn_> freakin' imgur is pukin'
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[23:08:58] <PetefromTn_> well imgur is not working
[23:09:24] <zeeshan> =\
[23:09:37] <PetefromTn_> any other decent image posting sites?
[23:09:53] <Tom_itx> imagebin
[23:10:38] <Tom_itx> http://imagebin.ca/
[23:10:53] <PetefromTn_> ok
[23:11:02] <zeeshan> dont do it !
[23:11:07] <zeeshan> its a canukistan website
[23:11:12] <zeeshan> nooooooooo
[23:11:23] <JT-MOBILE> Imagebin
[23:11:29] <SpeedEvil> 4chan
[23:11:41] <PetefromTn_> http://imagebin.ca/v/2J48KM83nbgh
[23:12:08] <zeeshan> nice
[23:12:40] <JT-MOBILE> Nice
[23:12:45] <PetefromTn_> http://imagebin.ca/v/2J48lWEW5nFL
[23:13:20] <PetefromTn_> hm it rotated the image for some odd reason
[23:13:44] <PetefromTn_> oh wait if you click it it goes back
[23:13:50] <PetefromTn_> and you can zoomie it LOL
[23:13:57] <Wolf_> I find it easier to weld things under cars if you flip them on the side as well
[23:14:07] <PetefromTn_> LOL
[23:14:12] <JT-MOBILE> Hard to do on a phone lol
[23:14:19] <PetefromTn_> I pieced it and tacked it under the car on the lift
[23:14:29] <PetefromTn_> then finished welded most of it on the table
[23:14:43] <PetefromTn_> then I put it BACK in the car and tacked the final flange in
[23:14:53] <PetefromTn_> then pulled it back out of the car and welded it all up
[23:15:02] <PetefromTn_> then put it back in the car and fabbed up the hangar
[23:15:10] <PetefromTn_> and welded it under the car on the lift
[23:15:13] <PetefromTn_> hehehe
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[23:17:20] <PetefromTn_> https://www.facebook.com/MarchScopes the making of a $4k riflescope body...
[23:17:24] <PetefromTn_> interesting
[23:17:28] <JT-MOBILE> The deer are here
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[23:21:35] <PetefromTn_> what deer?
[23:22:34] <PetefromTn_> http://www.foxsports.com/buzzer/story/samurai-batting-cage-slices-100-mph-fastball-in-half-101415 LIke A BOSS!!
[23:22:38] <JT-MOBILE> The ones I feed every night
[23:23:06] <PetefromTn_> then it shouldn't be a surprise they are there then ;)
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[23:25:41] <Erant> intel_idle.max_cstate = 0 seems to result in ~10us jitter. (Disables intel_idle and goes to acpi_idle).
[23:27:08] <JT-MOBILE> They are seldom late for dinner
[23:27:32] <Erant> Probably better than idle=poll for keeping the machine coo... Nevermind, it just spiked to 25us again.
[23:27:37] <andypugh> Erant: Don’t spend too much time chasing latency. 20k is good enough, move on to config and making chips.
[23:28:01] <Erant> andypugh: Yeah. Fair enough, I'm just curious.
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[23:29:32] <zeeshan> how does latency come into play anyway?
[23:29:44] <zeeshan> if you got 20us latency for example
[23:29:52] <zeeshan> latency spike
[23:30:02] <Erant> It's not latency, it's jitter.
[23:30:08] <zeeshan> that means the servo won't turn until 20 us later?
[23:30:23] <Erant> For software stepping, it can mean you're out of spec for the setup/hold times of your system.
[23:30:26] * zeeshan never saw it being a problem
[23:30:37] <zeeshan> yes but why is it not a problem w/ hardware stepping
[23:30:46] <Erant> Because of pulse widths.
[23:30:49] <zeeshan> doesnt the computer nmeed to send pulses to the hardware controller?
[23:30:54] <andypugh> It means that the time-based calculations will be off by that much, and for software steping it means that a step will be that amount early or late.
[23:31:33] <Erant> andypugh: Not even that, I could see you hitting hold time violations if you hit on end of the jitter spectrum and then the other.
[23:31:52] <Erant> Unlikely, but it could happen (which means it will)
[23:32:01] <andypugh> zeeshan: With a hardware stepgen it sends a step rate to output for the nexr mS. Then next time round it reads back how many steps were actually made and re-calculates the step rate for the next mS.
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[23:33:14] <andypugh> Erant: That shouldn’t happen unles the hold time is in the order of a thread cycle, and they generall aren't
[23:33:36] * zeeshan is too tired to understand
[23:33:40] <zeeshan> but i think i follow somewhat.
[23:33:50] <zeeshan> it sends a pulse train ahead of time
[23:33:54] <Erant> zeeshan: Basically it violates the realtime nature of the system.
[23:34:03] <Erant> Fundamentally that's what happens.
[23:35:13] <zeeshan> andypugh: how does it work for servos?
[23:35:14] <zeeshan> analog
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[23:35:45] <andypugh> Erant: I wouldn’t go that far. Smoothstepper and such do, but the Mesa cards don’t actually buffer, they still rely on a 1mS update rate.
[23:36:40] <Erant> andypugh: That's interesting. So the mesa cards are relatively 'dumb'?
[23:37:13] <Erant> Has anyone taken the HostMot2 firmware and put it on something other than the Mesa cards ever?
[23:37:24] <Erant> I have a stack of random boards here...
[23:37:42] <zeeshan> andypugh: fyi
[23:37:54] <zeeshan> i have left my mill on pause for the entire day
[23:38:00] <zeeshan> i was nervous to do it
[23:38:07] <zeeshan> but it didnt move :P
[23:42:49] <Tom_itx> or it took a walk and returned exactly where it was!
[23:43:07] <zeeshan> lol
[23:45:53] <andypugh> Erant: Yes, there is a chap in Bulgaria who makes machines running Hostmot2 firmware on his own hardware
[23:46:14] <andypugh> zeeshan: It just finished, so no need.
[23:47:32] <andypugh> (Well, half-finished, I need to flip the block and do the rest of the cavity, too big for the machine.
[23:49:03] <andypugh> https://picasaweb.google.com/lh/photo/xWSYzO5oaFhnPfpZh-m1h9MTjNZETYmyPJy0liipFm0?feat=directlink
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[23:50:16] <Erant> How are you finding machining MDF? I need some cheap material to cut some thermoform molds from.
[23:50:43] <andypugh> It is cheap. It doesn’t have much else going for it.
[23:51:15] <Erant> I was going to try HDPE. Figured that'd produce less dust to get into all the nooks and crannies.
[23:51:45] <andypugh> Yes, though that isn’t as cheap. On the plus side you don’t have to glue it together into blocks.
[23:52:20] <andypugh> I prefer HDPE, and I have quite a lot of it, but no lumps big enough for ths job.
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[23:53:04] <andypugh> The dedicated Model Boards certainly make a lot less dusty mess.
[23:54:01] <andypugh> (Though once the cavity fills with fluff the airborne dust level is reasonably low). https://picasaweb.google.com/lh/photo/ujCfmLeggISPOKbFc8at69MTjNZETYmyPJy0liipFm0?feat=directlink
[23:54:26] <Erant> andypugh: Yeah, but modelling board is $$$ and these aren't complicated shapes.
[23:55:23] <andypugh> glued-together hardwood ply i snicer than MDF, though you do tend to discver voids in the plies.
[23:55:40] <andypugh> Knifing Putty (stopper) is the solution to that, before painting.
[23:55:55] <Erant> I'm actually mostly worried about dust getting into all the oiled surfaces.
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[23:56:29] <andypugh> I laid blue paper towel over my slides to try to limit that.
[23:56:37] <Erant> I use sawdust to pick up oil in the workshop. Doesn't do great things to oiled surfaces.
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[23:57:53] <andypugh> MDF ends up furry, and can be hard to sand to a good finish. The Internet suggested this: http://www.screwfix.com/p/zinsser-b-i-n-shellac-based-primer-white-1ltr/29661 and it seems to do the trick. It’s spirit-based so wicks in deep and dries fast.
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