#linuxcnc | Logs for 2012-10-13

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[01:55:40] <r00t4rd3d> PLINGS
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[01:58:31] <tjb1> shhhh r00t
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[02:03:01] <r00t4rd3d> its been silent in here for like 5 hours
[02:03:25] <Tom_itx> yeah until you came along and ruined it
[02:03:41] <r00t4rd3d> gotta keep them logs going
[02:03:42] <Tom_itx> nice good nap
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[02:08:58] <tjb1> nap?
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[02:33:52] <r00t4rd3d> http://i.imgur.com/mrAc4.jpg
[02:42:25] <ReadError> i think hes doing it wrong
[02:49:51] <r00t4rd3d> http://www.kickstarter.com/projects/713023302/socrates-the-most-clever-socks-ever
[02:49:56] <r00t4rd3d> kevlar socks
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[02:57:48] <tjb1> So the only kevlar part is the toes?
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[03:21:29] <r00t4rd3d> you dont think i acutally read it do you?
[03:27:17] <r00t4rd3d> i got the t slot bit i ordered today, gonna make a sweet spoil board....
[03:27:37] <tjb1> Anyone that cares, y axis cable chain - http://sphotos-b.xx.fbcdn.net/hphotos-ash4/308088_4440408924326_130739203_n.jpg - http://sphotos-b.xx.fbcdn.net/hphotos-prn1/643981_4440408124306_1228726966_n.jpg - http://sphotos-a.xx.fbcdn.net/hphotos-ash3/540778_4440406604268_1604969429_n.jpg
[03:27:58] <tjb1> Before you say it, yes I know you only need a bit over half of axis travel but I didnt have any better way to get the wires to the middle of the gantry :)
[03:28:22] <r00t4rd3d> www.imgur.com
[03:28:32] <tjb1> Why?
[03:28:59] <r00t4rd3d> you can group you images into an album
[03:29:10] <tjb1> I can do that on facebook
[03:29:14] <r00t4rd3d> ffs
[03:29:45] <tjb1> Its easier to upload it to facebook from phone
[03:30:02] <r00t4rd3d> imgur has a phone app i think
[03:30:18] <tjb1> Just look at pictures and hush
[03:30:21] <r00t4rd3d> http://imgur.com/blog/2010/12/10/imgur-mobile/
[03:30:26] <r00t4rd3d> i refuse facebook.
[03:31:16] <r00t4rd3d> id rather shoot myself in the mouth.
[03:32:32] <tjb1> i cant download that at home
[03:34:37] <r00t4rd3d> "Thereís no special link, all you have to do is visit imgur.com on your phone."
[03:35:31] <tjb1> Not gonna work at home :)
[03:36:20] <tjb1> Come take this thing apart and paint the rails for me
[03:36:56] <tjb1> and I cant upload to the website because I have an iphone
[03:37:44] <r00t4rd3d> However, there are a couple great Imgur apps for the iPhone that support uploading, and they can be found simply by browsing the iTunes store.
[03:38:09] <r00t4rd3d> yawns.
[03:39:58] <tjb1> tjb1: i cant download that at home
[03:40:24] <tjb1> Just for you r00t4rd3d - http://www.cnczone.com/forums/diy-cnc_router_table_machines/154609-4x8_-_plasma_router-post1180933.html
[03:41:05] <tjb1> I need a relay to turn the router on and off
[03:41:32] <r00t4rd3d> is that a extension cord in there?
[03:41:57] <tjb1> Yes
[03:46:29] <tjb1> r00t4rd3d: are you turning your router on and off manually?
[03:48:39] <r00t4rd3d> yeah
[03:49:45] <tjb1> The extension cord is for the router, im gonna bring it back to the box and add a relay to turn it on/off
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[06:08:17] <mazafaka> I work in ghetto http://img-fotki.yandex.ru/get/6519/137304751.2/0_9aae8_9635ae3e_orig and these are my bikes: http://img-fotki.yandex.ru/get/6523/137304751.2/0_9aae9_e87c6704_XXXL.jpg
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[06:36:13] <mazafaka> Hah, Stark Trial Team 2008, Norco Mountaineer 17'' 2003, Atom Bomber 20xx
[06:37:14] <toastydeath> i've never used a plate roller
[06:37:19] <toastydeath> cool stuff
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[06:50:24] <DJ9DJ> moin
[06:56:18] <mazafaka> 'the corner of civil defense' is written on the wall, heh
[06:58:25] <mrsun> hmm i wonder if i should make a indexer plate for the spindle on the mill today
[06:58:31] <mrsun> something ive wanted to do for a long long time
[06:58:39] <mrsun> or whatever its called :P
[06:58:45] <mrsun> so i can read back the rpm
[07:04:29] <mazafaka> toastydeath: the cones they make for pipings are somewhat weird. They bend steel sheets like they want.
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[09:04:54] <mazafaka> Would someone of you buy an electro bike like Sero S? http://plugbike.com/wp-content/uploads/2010/05/2010-zero-s-electric-motorcycle.jpg I think I would, I actually plan to do it, maybe after 5 years or so...
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[09:38:37] <MattyMatt> mazafaka, I would prefer it to have pedals, for legal & range reasons
[09:39:05] <MattyMatt> I had an ancient one that I was always walking the last mile to work
[09:39:27] <MattyMatt> until the day I was arrested for riding a motorbike
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[09:59:24] <awallin> bikes (pedals!) are nice until you have to haul some heavy/large stuff...
[10:00:44] <MattyCNC> depends if there's a hill involved
[10:01:08] <MattyCNC> you can haul 500kg on a dutch bakfiets easy
[10:01:35] <mazafaka> MattyMatt: I meant legal age, otherwise I want a full-driven electro mountain bike
[10:05:19] <MattyMatt> it's not just age. there's tax & insurance issues when you go from a bicycle to a motorbike
[10:05:23] <awallin> then there's the problem of storing the truck-bike...
[10:05:45] <MattyMatt> tarpaulin :) covered wagon
[10:05:54] <MattyMatt> and a "please don't steal" sign
[10:06:31] <MattyMatt> a decent paint job would discourage theft I guess
[10:07:32] <MattyMatt> it's just as easy to store as any other vehicle that can shift 1/2 tn
[10:08:02] <awallin> but the bike is easier to steal on the street...
[10:08:26] <MattyMatt> that's undeniable. my homemade one was stolen
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[10:10:30] <MattyMatt> best of all worlds. electric bakfiets with a rottweiler
[10:12:19] <Loetmichel> bakefiets?
[10:12:31] <MattyMatt> for heavy loads, you can tip the whole thing up into a ramp. try doing that with a motor van
[10:13:55] <MattyMatt> http://www.bakfiets-en-meer.nl/wp-content/uploads/2007/09/workcycles-classic-bakfiets.jpg
[10:14:41] <Loetmichel> ah, bakfiets is this? -> http://www.flottbike.de/pool/christiania-light.jpg
[10:15:08] <MattyMatt> yep
[10:15:13] <Loetmichel> i see
[10:15:32] <Loetmichel> hmm, 2 2kw brishless hub motors...
[10:15:38] <Loetmichel> brushless...
[10:15:43] <Loetmichel> a fat battery pack...
[10:15:58] <awallin> they rent those at the re-cycling-center here... for hauling your stuff to/from the re-cycling
[10:16:00] <MattyMatt> yeah electric front wheels would make hills possible
[10:16:10] <Loetmichel> the fiets is already there, my wife has a hip joint athritis, so a nnormal bike isnt for her...
[10:16:34] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=11927
[10:16:47] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=11930
[10:16:52] <MattyMatt> you need good hips for a normal bakfiets
[10:17:13] <MattyMatt> getting started needs a full grown man's weight on one pedal
[10:17:25] <Loetmichel> she can pedal but stand out at the traffic lights
[10:17:43] <Loetmichel> bu NOT
[10:17:45] <Loetmichel> but
[10:18:00] <Loetmichel> that will hurt if its the wrong side
[10:19:33] <MattyMatt> you can make them with half a moped on the back too
[10:20:21] <MattyMatt> presumably with the gearing lowered
[10:21:31] <MattyMatt> I'd prefer the front wheels to be powered I think
[10:21:40] <MattyMatt> 3 wheel drive when you're pedalling too
[10:22:11] * Loetmichel has already ordered some small 2kw brusless model motors including forward/reverse ESCs
[10:22:26] <Loetmichel> and some 4s 5Ah lipo packs
[10:22:42] <Loetmichel> ... just have to make the geardown and clutch ;-)
[10:22:51] <Loetmichel> when they arrive
[10:23:00] <MattyMatt> are they for the wife's trike?
[10:23:30] <Loetmichel> jyeah, for the both back wheels of the trike and for her wheelchair
[10:24:22] <MattyMatt> clutch? why do you need that? you can freewheel and regenerate with a BL motor can't you?
[10:24:30] <Loetmichel> i know, 4kw is a bit much but the model motors are not meant for more than 5 minutes at full power, so i thought i get some slightly bigger ones and throttle tehem
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[10:26:15] <Loetmichel> MattyMatt: because she needs a reverse drive AND the brushelss motors have a relatively high "rastmoment" i.e.: they "click" to much to be left engaged if pedaling only
[10:26:42] <Loetmichel> clutch as in : some means of disengaging them completely when pedaling
[10:26:58] <MattyMatt> that must be a limitation of the ESC design
[10:27:59] <Loetmichel> MattyMatt: no, a limotation of the motor construction
[10:28:06] <Loetmichel> too stromg magnets
[10:28:28] <MattyMatt> ah right yeah, like a new stepper
[10:29:16] <MattyMatt> I got 8 used steppers on ebay all the same. 7 were "coggy" but one was totally smooth, but it works just as well as the others
[10:30:06] <Loetmichel> MattyMatt: depends on the motor construction: if you have a hybrid stepper you will have less to none cogging
[10:30:26] <Loetmichel> because a hybird stepper usses the stator field to generate the rotor field
[10:30:42] <Loetmichel> i.e: unpowered there is no magnetic filed in the motor
[10:30:42] <MattyMatt> these were all identical construction. I'm assuming the magnets in the smooth one have been baked
[10:30:51] <Loetmichel> pissible, too
[10:30:55] <Loetmichel> possible
[10:30:56] <archivist> hmm project on fleabay but over priced 160896668455
[10:39:15] <MattyMatt> rain damage looks bad. rust on top of chuck suggests they didn't even close the door
[10:40:23] <MattyMatt> oh no, it's surface rust all round, on 2nd look
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[10:45:15] <MattyMatt> yeah that'd do me for if it worked and had a barfeeder and I had 3 phase and a barn
[10:45:22] <MattyMatt> and I had £2k
[10:47:24] <MattyMatt> for making delrin toothed pulleys (as I do) I might get away with an MDF one for a while, but I'm resisting the urge to make that
[10:48:13] <MattyMatt> I'll keep drawing my plans and do it properly in metal or epoxy-granite
[10:59:43] <MattyMatt> slantbed with turret on 240V with no pneumatics
[11:00:14] <MattyMatt> will a solenoid for the dog clutch on the turret be futile?
[11:02:41] <archivist> yes/no/maybe/depends
[11:03:27] <MattyMatt> I could try and arrange for the turning motor to do the clamping
[11:04:41] <MattyMatt> ah build first, criticise later. design while hacking the docs.
[11:04:45] <archivist> some dogs are tapered to remove play and withdrawal could be hard
[11:05:13] <MattyMatt> yeah the ones I've seen are all tapered
[11:06:32] <MattyMatt> a single dog on a high geared leadscrew might work
[11:07:09] <MattyMatt> for my modest needs
[11:08:21] <archivist> or do the crap up against a ratchet tooth that is used on a denford orac and similar
[11:09:21] <archivist> they back turn the rotating motor after the index rotation
[11:10:22] <MattyMatt> ah well it's all vapour. gotta do it on this for now http://i.imgur.com/SkXmd.jpg
[11:10:26] <jthornton> for common metric drills are the smallest increment 0.1mm? ie 1.1, 1.2, 1.3 etc.
[11:10:59] <MattyMatt> archivist yeah that sounds like what I was thinking. turret only rotates one way, so the opposite way clamps
[11:11:31] <MattyMatt> jthornton yeah that's the finest I've seen
[11:11:40] <jthornton> ok thanks
[11:12:09] <jthornton> I'm working on a tap drill selection tool and if I get time I want to add metric to it
[11:12:47] <jthornton> you pick a tap and it shows what drills are within 50% to 90% thread for that tap
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[11:21:22] <Loetmichel> hmmm
[11:22:34] <Loetmichel> just experienced it again: anyone has a suggestion why my linuxCNC seems to restart (not reboot, maybe only the x is restarting) if left alone sitting there for a while?
[11:22:40] <awallin> jthornton: I thought for each tap there's only one right drill?
[11:22:52] <spiderdijon> hi, i'm trying to add backlash compensation to my machine and i've added the correct lines in the ini and it is taking effect. It seems to work at low speeds - I see the axis move quickly very briefly before moving at the correct speed. At high speeds it pushes my machine past it's speed limit and the axis stalls. Is there anything it can do to limit the backlash comp speed?
[11:23:04] <Loetmichel> just came back from a smoke, looking at a gnome login prompt
[11:23:21] <Loetmichel> after login there was a naked desktop like after cold boot.
[11:23:33] <Loetmichel> but i left the machine with LinuxCNC open
[11:24:07] <Loetmichel> ?!?
[11:24:53] <jthornton> awallin, no it depends on the material and the depth of the hole
[11:24:59] <spiderdijon> Loetmichel: check the syslog I suppose - may have clues
[11:25:02] <MattyMatt> awallin I find it varies with material. in plastic I'll go for 100% thread depth (2mm for m3x0.5)
[11:25:23] <jthornton> for example for thin metal you go for 90% for deep in steel 50%
[11:25:43] <jthornton> and what MattyMatt said
[11:26:04] <jthornton> Spide
[11:26:19] <MattyMatt> grubscrews in plastic need all the thread you can get
[11:26:21] <jthornton> spiderdijon, did you read the manual on setting up backlash?
[11:26:56] <jthornton> I better up that to 100% for plastic
[11:27:45] <MattyMatt> yeah the plastic deforms while you're tapping, so the end result is slightly undersized and snug
[11:27:56] <awallin> so 100% means the tap has to remove all the material of the actual thread?
[11:28:08] <MattyMatt> yep
[11:28:32] <awallin> doesn't that mean a 50% drill in steel will make for a loose thread? i.e. the i.d. if the hole is too large?
[11:28:54] <archivist> tapping drill also depends on tap type as a thread forming tap needs a larger hole
[11:28:55] <MattyMatt> potentially yes, but that's how they all are
[11:29:38] <archivist> a forming tap will upset the metal to make a smaller hole
[11:29:47] <awallin> so in plastic the M3 thread groove is actually 0.5mm deep, but in steel it would be only 0.25mm?
[11:30:32] <jthornton> http://www.osgtool.com/Technical.asp?tid=1&id=1
[11:31:26] <MattyMatt> so a forming tap partially "rolls" the thread?
[11:32:59] <archivist> http://aluminium.matter.org.uk/content/html/eng/default.asp?catid=131&pageid=2144416380
[11:34:26] <archivist> better http://en.wikipedia.org/wiki/Threading_%28manufacturing%29#Thread_forming_and_rolling
[11:35:44] <jthornton> we used planetary thread rolling machines to make pallet nails
[11:37:06] <Loetmichel> spiderdijon: does that ring a bell? -> http://nopaste.info/9594a61f73.html
[11:37:51] <Loetmichel> it ONLY happens wehen the machine is left alone wit linuxcnc active for a while.
[11:39:11] <Loetmichel> anyone who is willing to help: read the syslog-part also, please
[11:39:52] <spiderdijon> hmm potentially GPU power saving issues? have you got a card you could plug in instead of using the integrated gfx?
[11:40:31] <Loetmichel> spiderdijon: onboard graphics . its a industrial mainboard
[11:40:52] <Loetmichel> (KT965/flex from kotron)
[11:41:22] <jthornton> that must be a hardware issue as I leave LinuxCNC active on my CHNC for weeks at a time
[11:41:26] <spiderdijon> jthornton: I found a few lines about backlash - about setting max acc for various things - is that what you mean?
[11:41:30] <Loetmichel> an no, no room for a graphics board.
[11:41:45] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12250
[11:41:50] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12265
[11:41:59] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12569
[11:42:00] <jthornton> spiderdijon, yes
[11:42:05] <Loetmichel> you see?
[11:43:32] <spiderdijon> I see, well it was quite brief but are you saying adjusting those values can limit the speed?
[11:43:39] <jthornton> spiderdijon, you might have to lower your max acceleration if your right on the bleeding edge
[11:43:47] <spiderdijon> ok thanks
[11:44:14] <spiderdijon> yeah my machine can only do 10ipm :(
[11:44:15] <jthornton> iirc the stepgen max acc must be higher than the axis or something like that
[11:45:25] <spiderdijon> Loetmichel: Search for that syslog error see if there are any fixes
[11:45:42] <spiderdijon> jthornton: I'll take a look, thanks
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[12:07:09] <mazafaka> what do you think of 2.5-4 mm height of cutting in milling?
[12:08:15] <mazafaka> This way, I can sharpen the mill bit easily when it is needed and besides, coolant I know the coolant is where it needs to be.
[12:09:20] <mazafaka> I write regimes for low-speed cutting when engineers record the time, and for regular work, when it's 3-6 times more fast.
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[13:42:48] <ReadError> hey
[13:43:01] <ReadError> is there a way i can verify my backlash compensation is on in the gui?
[13:47:04] <Tom_itx> it's in the ini?
[13:47:13] <Tom_itx> measure it
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[14:04:34] <ReadError> Tom_itx: yea its in there
[14:04:48] <ReadError> but i just wanted to confirm since somehow it got removed before
[14:04:53] <ReadError> (i didnt touch the stepconf either)
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[14:08:00] <mazafaka> MAchine I use is unequally rigid in X and Y directions, I know it trying to mill off the tens of millimeter from thikness like 50 mm...
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[15:17:43] <ReadError> https://vimeo.com/51331373
[15:17:48] <ReadError> made a little vidjah
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[15:56:57] <mazafaka> I'll take video of what I do, hardening-capable steel plates for various constructions these days.
[15:58:27] <ReadError> thats not applicable to what im doing
[16:01:15] <mazafaka> what?
[16:01:24] <mrsun> hmm, pneumatic cylinder rods what steel are they usaly made of? :)
[16:01:46] <mazafaka> plungers or pistons are made of...
[16:02:24] <mazafaka> Of some steel with 0.40% of carbon and 0.1% of crome maybe...
[16:02:35] <mrsun> heh :P
[16:03:11] <mrsun> was thinking if it was anything usefull, got a kinked air cylinder that im going to dissasemble and see what could be usefull in it
[16:03:19] <mrsun> ofc i might just shorten it
[16:03:25] <mrsun> to under the damage
[16:03:42] <mrsun> still would be a good air cylinder only a fair bit shorter :P
[16:03:50] <mazafaka> be carreful to your health
[16:05:46] <mazafaka> using high pressure with air is wrong, low pressure with hydraulics is what you need. Pneumatic stuff uncorporates huge pressure which in case if something goes wrong destroys everything while any liquid just starts to leake therbey dramaticalle reducing the pressure
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[16:06:51] <mazafaka> For example, they pressurize the welded construction with hydraulics, when they used air it was like a bomb. Once, the cap had flied away and killed a man
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[16:08:07] <mazafaka> I mean, to produce force, air is hardly pressed, and liquid is only pressed up a little bit, and leaks away through the holes and cracks
[16:09:47] <mazafaka> ... while air continues to finally destroy the construction while its pressure reduces. Remember how much time does it takes to flat an off-road tyre. liquid under the same pressure would just flow away in a part of the second.
[16:12:10] <mrsun> hmm, wait .. this is a piston like a hydraulic cylinder not a preasure tank
[16:12:10] <mazafaka> My writes suu much... My do not remember the prooper words... My is just a foreigner... No one wants to answer to my...
[16:12:39] <mazafaka> whatever, mrsun be careful with springs or so in such thingies
[16:14:41] <pcw_home> pneumatics normally use only up to 150 PSI or so, 3000 PSI is common for hydraulics
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[16:48:04] <IchGuckLive> hi all
[16:48:27] <IchGuckLive> Loetmichel: ?
[16:56:07] <DJ9DJ> hu
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[16:57:38] <IchGuckLive> B)
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[17:25:17] <mazafaka> https://www.youtube.com/watch?v=ZrxpyZlA6qw
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[17:55:46] <r00t4rd3d> Shit Stations:
[17:55:46] <r00t4rd3d> http://imgur.com/a/wBsn8
[17:57:48] <awallin> r00t4rd3d: cmon what has that got do with linuxcnc?
[18:00:18] <r00t4rd3d> computers
[18:01:34] <r00t4rd3d> makes my shop setup look clean
[18:02:04] <r00t4rd3d> i learned keyboards can withstand mass amounts of cigarette ashes
[18:02:34] <r00t4rd3d> i worry about the saw dust sometimes
[18:03:22] <r00t4rd3d> also when programming a good laugh and break from time to time is good for you.
[18:11:43] <r00t4rd3d> and your last comments had nothing to do with linuxcnc either
[18:13:13] <r00t4rd3d> so next time you want to call someone out, check yourself first.
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[18:38:02] <mrsun> so fantasticly brittle hss can be if you get it wrong
[18:38:16] <mrsun> just pulverized a center drill .. for no aparent reason
[18:41:47] <Loetmichel> r00t4rd3d: an i thought MY place was messy...
[18:52:00] <mrsun> looks like my exes old apartment :P
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[19:19:32] <Tecan> STOP!
[19:19:35] <Tecan> hammer time
[19:19:43] <DaViruz_> where's my hammer?
[19:20:54] <pcw_home> If I had a hammer...
[19:22:32] <mazafaka> pcw_home: would you get a tough job instead of being an 'electric geek' guy?
[19:23:26] <pcw_home> well I could hammer in the morning anyway
[19:25:32] <mazafaka> What a dream... Could be a nice dream, but girls, girls, girls... No chance for a hammer...
[19:27:18] <Tecan> lol anyway anyhow
[19:27:34] <mazafaka> If only a hammer and several chubby tacks... could be tempting...
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[19:29:03] <mazafaka> Or maybe a car and a chick. IT chick with hammer maybe. In my ideal own workshop.
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[19:48:43] <skunkworks__> pcw_home: is there a resolver interface that works with the 5i25?
[19:50:57] <pcw_home> Not ATM but I have one planned
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[19:58:32] <skunkworks__> ok
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[20:49:20] <DJ9DJ> gn8
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[23:39:55] <tjb1> Evening gents
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