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[00:40:50] <_methods> yeah i love those little boards with openwrt
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[01:08:14] <Duc> Anyone have experience with adding a linear scale to the knee on a bridgeport mill
[01:15:43] <enleth> Duc: just for positioning or for active use during machining?
[01:15:58] <Duc> just positioning
[01:16:20] <Duc> I may use the knee later on for tool offset but not for active milling
[01:18:37] <enleth> I haven't done this yet but I imagine this heavily depends on the amount of sag your machine gets when unclamping the knee
[01:20:43] <enleth> those magnetic scale read heads really hate any rotation during use
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[01:22:02] <Duc> I will admit that I rarely clamp the knee when machining
[01:22:37] <Duc> how about glass scales?
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[01:36:08] <enleth> no idea - never used linear glass scales
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[01:48:09] <Duc> A few timess I have lost track of how much I dropped the table
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[02:13:07] <Jymmm> alex_joni: Plan on making a new music player?
http://www.aliexpress.com/item/Hot-Sale-Smart-Electronics-1pcs-KY-040-Rotary-Encoder-Module-Brick-Sensor-Development-Board-for-arduino/32341633440.html
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[03:58:51] <strokercrate> hello
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[04:12:16] <FloppyDisk5_25> how do you clear a g7 (radius mode for lathe)?
[04:12:23] <FloppyDisk5_25> especially when I have a MILL..
[04:12:31] <FloppyDisk5_25> accidently typed it into mdi.
[04:13:00] <FloppyDisk5_25> When I did a G55 g1 x-5.25, it went half way, which would seem to make sense if I was doing radius mode (half way I guess).
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[04:18:05] <zeeshan|2> you cant use g7
[04:18:17] <zeeshan|2> unless you have you ini setup wrong
[04:18:22] <FloppyDisk5_25> I would agree, but when you look at the gcodes '
[04:18:24] <zeeshan|2> make sure you dont have a line in there that says
[04:18:28] <zeeshan|2> "LATHE = 1"
[04:18:41] <FloppyDisk5_25> I shouldn't, this was a pncconf for a mill.
[04:19:06] <FloppyDisk5_25> I wouldn't think you could use a g7 at all. My fumbly fingers accidently did that - doh.
[04:19:27] <FloppyDisk5_25> Let me check the ini... I can do that from in the house:-)
[04:19:28] <zeeshan|2> well its either g8 or g7
[04:19:28] <zeeshan|2> lol
[04:19:32] <zeeshan|2> so change it back to g8
[04:19:33] <zeeshan|2> :P
[04:19:50] <FloppyDisk5_25> I was thinking of going to g8, but you're right, i shouldn't have either, I would think...
[04:20:48] <zeeshan|2> honestly
[04:20:55] <zeeshan|2> ive never tried doing those 2 commands on the mill
[04:20:57] <zeeshan|2> but i'd think it'd error out
[04:21:03] <zeeshan|2> linuxcnc is pretty picky :P
[04:21:46] <FloppyDisk5_25> I was hoping I would. I sure get the error when trying to move a G1 at F0... hehehe....
[04:21:52] <zeeshan|2> hehe
[04:23:30] <FloppyDisk5_25> Hmm, I hvae TASK=milltask, no LATHE in either my main hal file or INI file.
[04:23:31] <FloppyDisk5_25> COORDINATES = X Y Z
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[04:24:36] <FloppyDisk5_25> I would have restarted, but didn't want to re-indicate position (lazy). So, I'll move where I need to be and restart...
[04:24:59] <FloppyDisk5_25> restart linuxcnc, that is...
[04:28:45] <zeeshan|2> hm
[04:28:45] <zeeshan|2> :P
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[05:39:01] <chupacabra> test
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[06:09:10] <SpeedEvil> icle
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[07:09:31] <trentster> hey all
[07:09:48] <archivist> hay one
[07:11:06] <trentster> for all you Lathe mill users out there, is it true that for a diy lathe build, its possible to use a repurposed high end treadmill motor?
[07:11:42] <trentster> I mean for a lathe or a mill
[07:12:06] <archivist> one on the mailing list used one
[07:12:08] <trentster> howdy archivist, how goes things in your neck of the woods?
[07:13:09] <archivist> seems I have a days work today, but car not arrived to pick me up
[07:14:28] <SpeedEvil> trentster: the spindle motor is perhaps the easiest part of a lathe
[07:14:31] <archivist> my cnc lathe has a dc motor very similar to a treadmill motor
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[07:17:27] <archivist> they are about 1/2 hp or less iirc,
[07:17:52] <trentster> SpeedEvil: yes I am aware its very involved, I was just wondering about the treadmill motor repurposing story I heard. If its a valid use or not.
[07:18:14] <trentster> archivist: waiting for a car to pick you up? Do you not drive?
[07:18:20] <archivist> valid if you can keep it cooled
[07:20:07] <trentster> I have caught the CNC Mill bug - I really want a mill now!
[07:20:38] <trentster> I suspect perhaps buying a tormach may land up cheaper than a dit build/conversion
[07:21:18] <archivist> one of everything minimum with extra for size
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[07:22:37] <trentster> ?
[07:23:15] <trentster> archivist: no clue what that means
[07:23:19] <archivist> a mill a lathe a hobbing machine
[07:24:54] <archivist> then because of size limitations I have 4 running lathes two mills
[07:25:06] <archivist> one hobbing machine
[07:25:40] <SpeedEvil> Limitations of hobbing machines really grinds my gears.
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[08:05:12] <Deejay> moin
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[08:18:25] <trentster> SpeedEvil: archivist I don't even know what a hobbing machine is - it sounds like something from middle earth or the Mountain of doom ;-)
[08:19:34] <archivist_herron> gear cutting machine
[08:20:57] <trentster> aah ok.
[08:21:09] <trentster> I would like to try my hand at some cnc knife making
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[08:23:23] <archivist_herron> isnt that more art form in the final polish
[08:25:22] <trentster> no, 90% can be cnc made, the rest needs to be hand finished
[08:26:13] <archivist_herron> supposed to be artisan blacksmith :)
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[08:29:46] <trentster> archivist_herron:
https://www.youtube.com/watch?v=HAXkuGYDUKk
[08:32:04] <archivist_herron> this box struggles to watch vids
[08:34:00] <trentster> my sympathies
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[09:20:59] <beikeland> I'm playing with the ptest.hal sample trying to work out my limit switches and encoder setup while waiting for more parts. Is it possible to both show the state of a pin to a virtual led and have it drive an ecoder? I'm getting
[09:21:11] <beikeland> Pin 'parport.2.pin-10-in' was already linked to signal 'led-2_10'
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[09:37:16] <archivist_herron> I cannot see why you want to drive an encoder
[09:38:36] <archivist_herron> an encoder drives a port
[09:39:46] <beikeland> maybe drive is the wrong word; sorry. but yeah, i want encoder to drive an input pin; but if possible maintain the virtual led for the test view
[09:43:38] <archivist_herron> you can view any pin no need to restrict yourself to parallel port pins
[09:45:13] <archivist_herron> in axis you can Show HAL Configuration and set watches on any signals or pins
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[09:55:36] dieck_ is now known as dieck
[10:08:33] <beikeland> currently working with pyvcp and halrun just to see how it all works while the machine is unusable
[10:09:16] <beikeland> so i tried adding <halpin>"xenc-phase-a encoder.0.phase-A"</halpin> to the virtual led that used to be parallel port 10, but it doesn't update. should it?
[10:14:09] <beikeland> so i can define it as net led-2_10 3port.led-2_10 parport.2.pin-10-in encoder.0.phase-A and have both encoder and virtual led
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[10:47:53] <XXCoder> heys
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[11:23:50] <jthornton> morning
[11:25:10] <XXCoder> yo
[11:26:24] <ReadError> wheres the best to file a bug report
[11:26:38] <ReadError> seems like the wheezy live iso has been broken for a bit
[11:26:52] <ReadError> or doesnt work on 3 out of 3 machines i tried ;/
[11:28:53] <XXCoder> ya sure it passes md5 check?
[11:29:12] <ReadError> yup and sha
[11:29:30] <XXCoder> the fault is not in stars but iso then
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[11:30:49] <jthornton> git bug report I think it is github.com/linuxcnc
[11:31:17] <jthornton> wheezy works for me the 20 times I loaded it
[11:31:28] <jthornton> did you check the md5sum
[11:32:39] <XXCoder> jthornton: asked that already
[11:33:23] <ReadError> I forget the exact error, I ended up just using the netinstall of wheezy and going from scratch, will try and get more info though
[11:34:14] <_methods> there is a netinstall of the livecd?
[11:34:20] <jthornton> lol I was busy typing and missed that
[11:34:33] <ReadError> _methods nah just the wheezy iso
[11:34:35] <_methods> oh nm you had to use the netinstall
[11:34:45] <_methods> sorry readingerror lol
[11:35:04] <_methods> no coffee yet
[11:35:16] <XXCoder> COFFEE STAT!!!
[11:35:18] <_methods> so what is wrong with the livecd?
[11:35:28] <XXCoder> 100cc drip injection!
[11:35:39] <XXCoder> 1cc/s
[11:36:42] <_methods> i had an issue with a machine i installed on with hdmi
[11:41:16] <ReadError> http://www.dailygusta.com/photos/i-qbK794M/0/X3/i-qbK794M-X3.jpg
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[11:49:09] <_methods> ahh xorg
[11:49:21] <XXCoder> http://www.deconstructingcomics.com/podcast/references/tmcm.jpg
[11:49:23] <_methods> gotta love the xorg
[11:50:18] <ReadError> ya the output is kinda useless
[11:50:36] <_methods> is that an hdmi monitor by any chance?
[11:51:17] <_methods> if it is try booting it up with a vga monitor
[11:51:26] <_methods> then update everything and hook up the hdmi monitor
[11:51:38] <ReadError> nah im using vga already
[11:51:42] <_methods> oh damn
[11:51:43] <ReadError> mobo has hdmi
[11:51:48] <_methods> hmmm
[11:51:55] <ReadError> but the wheezy iso installer boots fine
[11:52:04] <_methods> yeah the installer would work fine for me
[11:52:13] <_methods> then i'd hook up hdmi monitor and i'd get the same crash
[11:52:25] <_methods> i had to hook up a vga monitor to boot up
[11:52:32] <_methods> but you're using vga so that rules that out
[11:52:40] <_methods> anything in the log file?
[11:53:07] <_methods> i think i booted into recovery mode to fix the xorg issue
[11:53:13] <_methods> i had to add some flags to the bootup
[11:53:23] <_methods> can't remember what i had to add
[11:54:15] <ReadError> oh I already have a good install, I was just trying to boot this to compare the jitter between the rtai and preempt-rt kernel
[12:01:53] <beikeland> There is definitvely an issue with the installer and usb keyboards. I tried 3 different systems, no keyboard after grub. PS/2 worked fine.
[12:09:49] <jthornton> I found with debian that different desktops had different issues and all of them had some issues or another that's why I went with Linux Mint and the Mate desktop
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[12:18:34] <Demure_> I'm having a very hard time selecting stepper motors. I understand the specifications, but I don't truly understand what I should give importance. Is a higher amp motor with lower oz-in more worthwhile than a higher oz-in? I keep hearing too big a motor is no good, either, but if I don't know what I need, it's one of the more tempting options.
[12:19:34] <jthornton> there is a pretty good calculator on the wiki
[12:19:36] <Demure_> Also, I see that most stepper motors I come across are unbranded from somewhere in China, does this change how believable the specs are? I also have two Vexta stepper motors from Japan, but I'm unsure if the specs are good enough for the lathe I'm converting (First timer), they're 2-phase bipolar 240 oz-in 2A.
[12:21:39] <Demure_> Thanks, I missed that!
[12:22:14] <Demure_> But I do immediately see an issue: I have no idea what force is required to move the gantry and what cutting speed I should expect / want
[12:22:22] <jthornton> voltage is king with steppers, the higher the voltage you feed your drives the faster they can go
[12:22:34] <XXCoder> isnt oz-in far more important than how much power it uses?
[12:22:37] <jthornton> you have a lathe with a gantry?
[12:22:38] <XXCoder> ah I see
[12:23:01] <Demure_> I guess not, now that I realize :')
[12:23:12] <Demure_> Had to google gantry, I figured it meant the platform that holds the toolchanger
[12:23:23] <jthornton> the oz-in rating is how hard the stepper will stay still
[12:23:30] <Demure_> But how high I can feed the voltage is regarding the driver, not the motor, right?
[12:23:35] <XXCoder> jthornton: or keep moving?
[12:24:07] <Demure_> I was thinking going for 80v leadshine AM882 drivers
[12:24:20] <jthornton> nope that is holding torque
[12:24:22] <Demure_> From what I understand the oz-in is only for standing still and drops significantly when moving
[12:24:30] <jthornton> yep
[12:24:59] <Demure_> However isn't holding torque exactly the oz-in? Oz-in is the unit of measurement
[12:25:16] <Demure_> *holding torque the non-moving measurement
[12:25:23] <Demure_> I never actually see a measurement of force while moving
[12:26:33] <jthornton> http://www.automationdirect.com/static/specs/surestepmotors.pdf
[12:27:01] <Demure_> Ah, it has it in the graphs
[12:27:54] <archivist_herron> each motor should have a graph,
[12:28:15] <Demure_> I'm sure in time, but finding them can be another issue
[12:28:29] <SpeedEvil> Everything should have a graph.
[12:28:35] * SpeedEvil rages.
[12:28:58] <archivist_herron> chinese skip that "step"
[12:29:38] <Demure_> I'm doubting whether I should go for a chinese no-brand stepper with higher 'specs' rather than sticking with the branded oriental motor Vextas I have that might be on the low end
[12:29:58] <jthornton> is this a tiny hobby lathe like a sherline?
[12:30:00] <Demure_> I'm wondering if, while some of those chinese steppers might list double the oz-in and such, if they actually reach that at all or whether they fall below that of the ones I have
[12:30:29] <Demure_> It's an Emco compact 5, so pretty small (
https://www.werktuigen.nl/afbeeldingen/models/6573/1/emco-compact-5-cnc.jpg ) but fairly sturdy
[12:30:33] <archivist_herron> going for to much torque means lower top speed
[12:30:56] <Demure_> The ballscrews are driven by timing belts attached to the motor pulley
[12:31:02] <Demure_> So higher oz-in means I can achieve a lower speed?
[12:31:43] <archivist_herron> look at motors you can get a graph of to get an idea
[12:31:51] <Demure_> With enough speed, would it be possible to cut coarse threads like that of a helicoid (
http://www.cameracheckpoint.com.au/wpimages/wp6916dc0c_05_06.jpg )?
[12:32:47] <archivist_herron> yes just start well out of the thread
[12:33:10] <Demure_> If I understand correctly, that is to build up to the right speed?
[12:33:22] <archivist_herron> yes,
[12:33:26] <Demure_> Thanks!
[12:33:52] <archivist_herron> personally I would mill that thread though
[12:34:12] <Demure_> I would if I could, but I only have a tiny Roland MDX-15 without a fourth axis. :(
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[12:34:49] <Demure_> I was hoping to eventually add live tooling to the lathe and a stepper to the c-axis and be able to mill it like that
[12:35:09] <archivist_herron> I have done a a thread about the same helix angle on my little cnc lathe
[12:35:28] <Demure_> How'd it go?
[12:35:40] <archivist_herron> smaller than the emco I think
[12:36:42] <Demure_> I'm trying to create linear motion from a circular action, hence my interest in them
[12:36:44] <archivist_herron> alright I think
http://www.collection.archivist.info/showresult.php?prog=1&srcprog=searchv13.php&srcdata=title&Type=PD&Accn_no=9004&subject=25792
[12:37:11] <archivist_herron> blind whitworth thread
[12:37:42] <Demure_> I think that's a fair bit finer than what I had in mind, but still good to know.
[12:37:47] <archivist_herron> no safety groove either, just use the taper out of the g76
[12:38:13] <Demure_> Out of brass?
[12:38:25] <archivist_herron> yes
[12:41:17] <archivist_herron> these were steeper I think
http://www.collection.archivist.info/showresult.php?prog=1&srcprog=searchv13.php&srcdata=title&Type=PD&Accn_no=9174&subject=26508
[12:42:14] <archivist_herron> I screw cut a left hand worm
[12:42:36] <Demure_> Nice! Would it be easier or harder to make coarse thread on a larger diameter (i.e. 60mm)?
[12:43:02] <archivist_herron> same just a higher cutting torque
[12:43:24] <Demure_> I see.
[12:46:41] <archivist_herron> for another worm I had backing support and milled it
[12:50:32] <Demure_> Might I ask what specs the motors on that small lathe where?
[12:51:17] <archivist_herron> actually I dont know it has the original small looking ones
[12:51:54] <Demure_> What lathe was it?
[12:52:04] <archivist_herron> starturn
http://www.collection.archivist.info/archive/DJCPD/PD/2013/2013_08_04_starturn_encoder/IMG_1631.JPG
[12:53:05] <archivist_herron> most of the chines steppers are more powerful than those probably
[12:53:11] <Demure_> I see. I've heard they're fairly similar build wise to the Emcos.
[12:54:25] <Demure_> Probably, I'm just not sure whether to go for chinese steppers that have something like 500 oz-in or stick to branded stepper motors with 240 oz-in and actually have all the required specs. :) I mean, I'm familiar with a fair slew of chinese unbranded products that don't even come close to half of what they promise..
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[13:03:51] <archivist_herron> I use chinese or what is lying around
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[13:31:50] <trentster> Demure is your budget tight or do you have some flexibility?
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[13:34:28] <Demure_> trentster: Tight but I'd rather get it right the first time. I have about 300$ available for both the stepper drivers and the motors.
[13:34:57] <Demure_> About 160$ should do for two leadshine drivers so that leaves about the same for motors
[13:35:36] <archivist_herron> get drivers use original motors, even cheaper
[13:35:54] <Demure_> The original motors are really bad, hence why I'm replacing them
[13:36:07] <Demure_> They have a very low step resolution
[13:36:17] <Demure_> Something like 7 I recall
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[13:41:08] <Demure_> I do have those Vexta steppers around but just worried they won't be able to do much with their specs
[13:41:24] <Demure_> And now I have the budget, later, I most likely won't. :')
[13:41:52] <gregcnc> 72 steps per rev
[13:42:20] <trentster> Demure_: its not exactly in your budget, but if I was doing my build again or for future builds, I would use closed loop and servo motors. This will give you speed and torque and precision without compromise.
[13:42:41] <trentster> I would go for the Clearpath stuff, also means you dont have to buy drivers
[13:42:49] <Demure_> Ah, yes, that's the amount.
[13:43:30] <gregcnc> which version of this machine do you have exactly? Compact 5 CNC, or Compact 5 PC?
[13:44:01] <Demure_> trentster: Thanks. That would be ideal, but I'm not sure it's within the budget. I did see some cheaper hybrid steppers though, where the encoder goes into the driver. I'll have a look into the clearpath stuff just to see if there's an option.
[13:44:05] <Demure_> It's a Compact 5 CNC
[13:44:21] <Demure_> Not all of the old electronics still work
[13:44:29] <Demure_> But it was very cheap and comes with the automatic toolchanger
[13:44:43] <Demure_> (So I'll deal with the horrible paintjob someone once gave it....)
[13:44:49] <gregcnc> OK, 5 PC has a very simple conversion option
[13:45:09] <gregcnc> as opposed to the original horrible yellow it came in?
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[13:45:17] <Demure_> ....I kind of like the yellow.
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[13:45:53] <Demure_> I like the idea of redoing all the electronics so I fully understand what's inside of it and how to fix it if something goes wrong
[13:46:25] <Demure_> Also plan on replacing the spindle motor with a stronger one driven by a VFD so I can control that through LinuxCNC
[13:47:06] <gregcnc> my Compact 6 will still be yellow unless I find extra money to send it out for paint.
[13:47:46] <gregcnc> I think motors are sized such that little damage is possible in that machine.
[13:47:47] <Demure_> The problem of the paintjob on mine is not so much the colors (Not ideal, dark red + blue-ish gray) but rather that it's applied by hand, you can see the thick brush strokes...
[13:48:01] <Demure_> You mean to the user or to the machine?
[13:48:16] <gregcnc> or any of the Emco teaching machines
[13:48:26] <gregcnc> machine
[13:48:57] <Demure_> In case that something goes wrong or would they not be able to handle much force to begin with? It feels quite sturdy built, as I take it all apart and clean it, but it's of course no room-filling-lathe.
[13:50:11] <Demure_> trentster: I'm looking at the clearpath stuff, but why would I not need drivers?
[13:50:20] <skunkworks> The steppers are odd. I would honestly run the original drives with the original steppers...
[13:50:49] <gregcnc> because these are in classrooms you can't have a tech come out every time it gets crashed.
[13:51:04] <Demure_> Fair enough, but less of a concern here.
[13:51:54] <Demure_> trentster: Am I understanding it correctly that they hook up directly to the motion controller and use the same controls (step / dir)?
[13:52:16] <gregcnc> You can contorl the original DC spindle motor with a matching DC drive
[13:52:45] <skunkworks> the input to the stepper drives is phase (you can control the 4 phases)
[13:53:04] <Demure_> Would that be worthwhile? I already have a 1.2hp Siemens 3-phase motor and a VFD that I both got quite cheaply.
[13:53:33] <Demure_> skunkworks: Why would you suggest running the original steppers? They seem like they're not all that capable, low-res and I'd have to deal with fixing the electronics
[13:53:54] <gregcnc> I ran a DC motor on a manual lathe.
[13:55:11] <gregcnc> I've been slowly working on the Compact 6. i really wish i had waited to find a running machine. the less work that needs to be done the sooner you can make parts.
[13:56:01] <Demure_> That's true, but sadly it's hard to get a somewhat affordable CNC lathe around here
[13:56:23] <Demure_> And even if I got a working Compact 5 CNC, I'm not sure I'd want to work with the old controller
[13:56:32] <Demure_> What kind of work does your compact 6 need?
[13:56:38] <gregcnc> everything
[13:57:07] <Demure_> Surely it comes with a bed or frame? ;)
[13:59:02] <Demure_> The Compact 6 seems like quite an upgrade from the 5
[13:59:02] <gregcnc> i have servos to replace the steppers but now am worried they will be undersize after initial moves on 24V, have to try 48V. Have a servo to run the turret, but have to rewire it. I'm replacing the old spindle encoder with a CUI unit now.
[13:59:55] <gregcnc> http://www.dieselrc.com/projects/emcocompact6/ The Compact 6, 120, 220, 320 all use the same bed casting
[14:00:40] <gregcnc> I've done a lot more work and need to update.
[14:00:50] <Demure_> Thanks, that's nice to look through
[14:01:05] <Demure_> Upgrading the power supply does not seem like the biggest of issues
[14:01:25] <Demure_> Why replace the spindle encoder? It doesn't need to be all that precise, no?
[14:03:37] <skunkworks> Demure_,
https://www.youtube.com/channel/UCn3ZLeZOYHIoRFqCC3eHWgA
[14:03:38] <gregcnc> it's not quadrature
[14:04:03] <skunkworks> that is all running the original drives. (pc version but still the same step drive electronics)
[14:04:30] <skunkworks> the spindle encoder works just fine as long as you don't need to rigid tap.
[14:04:59] <Demure_> I'm not sure I understand encoder lingo, what's the point of quadrature? I thought about using the original encoder since it seems to be quite simple and easy to wire up
[14:05:09] <Demure_> Ahh, I see, so for slow speeds?
[14:05:27] <gregcnc> quadrature can determine direction, for reversing the spindle on rigid tapping
[14:05:43] <Demure_> I'm sure the original drives would do a fair job, but the electronics that came with mine are not in good working order. When I wire it all up I can start the spindle and change it's speed, but can't make the Z or X axis budge
[14:05:56] <Demure_> gregcnc: Thanks, I understand now. :)
[14:06:54] <skunkworks> Demure_, sure - but is it the drives or the cnc conrol that is the problem?
[14:07:38] <gregcnc> mainly I wanted to do better than the original axis resolution, now I find out my servo encoders are 5000 line not 1250, but this should be OK.
[14:07:41] <Demure_> skunkworks: Not sure, but would it be doable to take out the drives of the old system and hook then up to a new controller board with no issues? Since I'm going to do rather small things I'm also still fairly worried about the 72 steps
[14:08:19] <Demure_> gregcnc: 5000 is a fair bit better than 1250, no? I only have one seperate encoder laying around that I now understand might still have some use for the spindle, albeit being a bit too high res for the purpose.
[14:09:22] <skunkworks> Demure_, with this machine - 72 steps gives you about .0005" halfsteps.
[14:09:35] <skunkworks> http://www.cnczone.com/forums/emco-lathe/186598-machinist-software.html
[14:10:24] <skunkworks> ^ again info on the pc version - but the actual setup would be the same to control the drives directly.
[14:10:27] <gregcnc> yes, but if i were using software stepping the machine would be slow. Mesa Should keep up. My lathe will have 0.125 micron resolution vs 2.5 micron original.
[14:11:32] <skunkworks> ? how fast do you want to go? I think I was getting 40ipm with the original stepper/drives
[14:11:39] <Demure_> That's what I calculated before making the choice, but since I'm going to be making parts that will fit existing parts I'd like it to be exact as possible. Perhaps it's over-doing it, but this way I'll also feel like the machine is more reliable.
[14:11:43] <skunkworks> but - whatever you want to do. :)
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[14:11:54] <trentster> Demure_: sorry was away, but yes the clearpath motor has the driver and encoder built right into the motor - you literaly plug it to Break Out Board and to power supply
[14:12:31] <Demure_> trentster: No worries! Do you have any experience with them yourself?
[14:12:52] <trentster> No, but I have a friend who has used them and he is blown away
[14:13:11] <trentster> Demure_: there is also neo7cnc on youtube channel he uses them and has a review - you want the link?
[14:13:42] <Demure_> trentster: No worries, I'll find it myself since you gave me the name. ;) The price doesn't seem crazy high as I was expecting.
[14:13:55] <Demure_> Makes you wonder what's the downside
[14:14:04] <trentster> well it will be at least double your budget I would think.
[14:14:09] <trentster> but the benefit is huge
[14:14:40] <trentster> its the way to go, steppers are very old tech now and should be avoided for new builds imho
[14:14:43] <Demure_> True, but double 300$ is not a HUGE increase
[14:15:01] <Demure_> I was looking into servos for a little bit and was seeing prices in the triple 0 range and gave up
[14:16:19] <Demure_> Would there be a big difference between the two series, i.e. the pulse ones with built in controller vs the ones designed to be stepper replacements?
[14:16:39] <trentster> https://www.youtube.com/watch?v=Z2kAcz-rG5s
[14:16:44] <trentster> there is the link btw
[14:16:45] <Demure_> I already ordered a stepper controler (MESA) but I doubt they've even touched my order so far
[14:16:54] <trentster> there is also a video there on conencting it to BOB
[14:17:01] <Demure_> Was already watching it. :)
[14:17:17] <trentster> :-) you are too quick for me
[14:18:11] <Demure_> I have nothing else to do right now then to fully throw myself on what motors to buy. ;) I recently graduated and have am jobless but have built up a small sum to get into machining and start a tiny business for myself.
[14:18:55] <trentster> what do you want to manafacture business wise?
[14:19:13] <Demure_> Cameras and lenses.
[14:19:21] <Demure_> Analogue ones
[14:20:09] <Demure_> I don't expect it'll be the biggest of hits but I don't need much to pay the rent at this point, so if there's ever a chance to try and make it work, it's now
[14:21:31] <Demure_> I'm hoping to make some replicas of lenses around the 1900s, in theory they're quite simple.
[14:21:45] <trentster> cool - sounds interesting
[14:22:39] <Demure_> Thanks a ton for the clearpath tip, I guess I'll be researching this for the following hour
[14:22:59] <Demure_> I wish they only had one choice of servo :')
[14:23:33] <trentster> I think you are looking for their standard Stepper replacement option
[14:23:48] <trentster> CPM-SDSK-2311S-EQN-1-1-D
[14:23:51] <Demure_> Yes, that's for sure, but I'm not sure on the torque and speed
[14:24:58] <Demure_> True, that's the one on his video, right? But then you have the eternal question....
[14:25:14] <Demure_> For 30$ more you get 20 oz-in more, and so forth
[14:25:31] <trentster> hah yeah - there is always a bit more for a bit more lol
[14:25:56] <trentster> you were thinking steppers before now you are already upgrading your clearpaths :P
[14:25:58] <Demure_> Exactly! It's horrifying. :( Makes me scared of the question of what if it's not enough?
[14:26:13] <Demure_> True, but before I was also thinking about what stepper power to get ;)
[14:26:25] <Demure_> And I'm not 100% sure, but the price is fairly doable
[14:27:10] <trentster> well my advice is go for same model as he uses ( I think thats the entry level one that includes servo encoder)
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[14:27:46] <trentster> The big decision is stepper vs clearpath - which to me is a no brainer. I wish someone had advised me when I did my build
[14:28:28] <Demure_> Any bad clearpath stories you've heard out there?
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[14:29:06] <trentster> you can even try phoning them and seeing if there is a discount for a startup or for education, sometimes they may be open to you doing a video review etc
[14:29:17] <trentster> nope I havent heard any bad things
[14:29:34] <trentster> They also have a great no quibble warranty and are US made
[14:30:41] <Demure_> Don't all their stepper killers have built in encoders? They say they can't lose steps.
[14:32:52] <trentster> "stepper killer" is a loosely used buzzword - essentially anything that is closed loop will know if its lost position and exactly where it is vs where it should be
[14:32:59] * JT-Shop got the 7i92 up and running :)
[14:33:02] <gregcnc> what are they? AC servo's with step/dir controllers built in?
[14:33:15] <trentster> gregcnc: yup
[14:33:35] <gregcnc> 800 steps/rev seems weak?
[14:33:42] <trentster> brushless dc servo motors with built in encoders
[14:33:52] <Demure_> JT-Shop: Congrats :)
[14:34:08] <Demure_> And of course, but since all of them seem to say that they don't lose steps makes me think they have encoders
[14:34:50] <Demure_> What do you mean with 800 steps/rev? I'm seeing 0.06 degree resolution
[14:35:45] <gregcnc> i saw 0.45
[14:35:52] <Demure_> Ah, they have different models indeed
[14:35:55] <gregcnc> their website is terrible
[14:36:02] <Demure_> They seem to have similarly priced 0.06 degree servos
[14:36:08] <Demure_> It's not the best, it's really hard to actually just get a straight up list
[14:36:17] <Demure_> https://www.teknic.com/model-info/CPM-SDSK-2311S-EQN/
[14:36:19] <Demure_> Here's the 0.06
[14:36:25] <trentster> Demure_:
https://www.reddit.com/r/CNC/comments/3fnhp4/anyone_used_clearpath_servos_from_teknic/
[14:37:08] <gregcnc> That model is a stepper motor, not DC or AC brushless.
[14:38:14] <Demure_> How is it a stepper if it's listed as a servo?
[14:38:33] <Demure_> (Ty, will read)
[14:39:16] <malcom2073> servo is a feedback mechanism, not a motor type fwiw. You can servo steppers
[14:39:17] <gregcnc> servo implies feedback. the torque curve is classic stepper
[14:40:20] <Demure_> Ah, I see.
[14:40:49] <Demure_> What would be the difference between a servo stepper like that and a DC or AC brushless?
[14:41:16] <gregcnc> more torque at at speed.
[14:41:55] <Demure_> How do I notice whether they're steppers or brushless? Their website seems to all call them brushless
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[14:43:53] <gregcnc> in application it won't matter as long as you operate under the torque curve.
[14:44:55] <Demure_> I see.
[14:45:24] <gregcnc> If noise was an issue, steppers would still be noisy
[14:46:11] <Demure_> How would I recognize based on the curve what type it is? Drooping curve vs linear curve?
[14:47:16] <gregcnc> I'm not surte about what I said they say they're quiet
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[14:47:34] <gregcnc> I wish they were straight forward with details.
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[14:50:22] <gregcnc> so these are tuned with their software via USB?
[14:50:37] <Demure_> From how I understand it, yes
[14:50:46] <Demure_> They have a micro usb port
[15:03:52] <trentster> gregcnc: I think all the datasheets are available there for download, you may need to register first
[15:04:22] <gregcnc> I see what they're doing. Clearview is a great stepper replacement, much more reliable than stepper. Is it still open loop to Linuxcnc?
[15:04:29] <trentster> Demure_: neo7nc has a video of him tuning them, you can see exactly how its done
[15:09:23] <Demure_> I doubt they'd be open loop to LinuxCNC, as I don't see the encoder feedback going out of the motor
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[15:14:03] <MrSunshine> machine feels strong when im test running it now atleast =) leaned my weight on the different axis and cant get it to stall =)
[15:14:30] <MrSunshine> thats at 6000mm/min maximum hopefully when im done tweaking everything i can go even higher =)
[15:17:17] <MrSunshine> i realy should make a new plate for the Z axis tho .. to much weight to high up i think =)
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[15:22:52] <Demure_> Hmm, I'm confused now
[15:23:01] <Demure_> For most price ranges on the ClearPath stuff there seems to be 3 models
[15:23:11] <Demure_> D-RLN, P-RLN or S-RLN
[15:23:20] <Demure_> Each have identical price and identical stats, except for oz-in
[15:23:34] <Demure_> They have 64 oz-in, 112 oz-in and 223 oz-in
[15:23:49] <Demure_> The last one has somewhat reduced RPM, so that makes sense
[15:23:56] <Demure_> But the first two do not (4000 RPM)
[15:24:04] <Demure_> Why would you ever consider the first option (Lower oz-in)?
[15:24:58] <MrSunshine> i guess the price and if you dont need anything bigger? =)
[15:25:12] <anomynous> is oz like a measure of volume? Like when cooking? Are you measuring steel in oz? How many oz of steel your machine can eat?
[15:25:40] <Demure_> But the price and size of the motor are identical
[15:25:40] <archivist> oz= ounce an imperial weight measure
[15:25:54] <Sync> freedom units
[15:26:01] <anomynous> oz/min ;D
[15:26:32] <anomynous> Sync, why freedom units?
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[15:26:52] <Sync> because nobody besides freedom country uses them significantly
[15:26:53] <Demure_> Because America uses them I suppose?
[15:27:23] <MrSunshine> are you sure its not troy ounces then ?
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[15:30:18] <malcom2073> Did I hear that someone needed some freedom?
[15:32:20] <ssi> because when canadians say "Hey, how many newton meters does your camaro make, eh?"
[15:32:23] <ssi> it sounds stupid :D
[15:32:55] <malcom2073> nobody knows what a newton is.
[15:33:02] <ssi> a newton is fruit and cake
[15:33:03] <malcom2073> Pretty much everyone knows what a pound is
[15:33:13] <malcom2073> newton pound is a cake nobody likes
[15:33:24] <gregcnc> they must be wound for different voltages
[15:33:26] <ssi> newton pound isn't a thing
[15:33:28] <Demure_> "Pretty much everyone knows what a pound is" See, that's where you're wrong
[15:33:30] <ssi> that'd be units of force squared :)
[15:33:31] <malcom2073> ssi: Shush.
[15:33:31] <Demure_> I have no clue what a pound is
[15:33:34] <malcom2073> It's cake
[15:33:36] <malcom2073> a*
[15:33:37] <archivist> poundal
[15:33:42] <gregcnc> newton cake?
[15:33:48] <ssi> Demure_: easy, a pound is a slug foot per second squared!
[15:33:49] <ssi> :D
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[15:35:25] <malcom2073> Demure_: Possibly location bias, I work with people who work with units of measurement a lot. It's entirely possible that most people *don't* know what a pound is, but I'm curious how many of them know how much a newton is
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[15:36:37] <archivist> an apple hitting you on the head
[15:36:49] <gregcnc> lack of details, they are not showing current, if you compare them at lower voltages the differences become more obvious.
[15:36:53] <malcom2073> archivist: by definition, you're not any more normal than I :P
[15:36:56] <Sync> ssi: it is weird
[15:37:03] <Sync> I like Nm but cannot stand kW
[15:37:17] <gregcnc> kW are great
[15:37:30] <Sync> but I also cannot really stand SAE hoerspower
[15:37:44] <Sync> DIN PS ftw.
[15:38:55] <ssi> Sync: see I don't mind kW
[15:39:05] <ssi> ugh you germans and your DIN
[15:39:09] <ssi> go back to germany, german
[15:39:11] <ssi> ;)
[15:39:15] <gregcnc> i dislike BTU
[15:39:26] <Sync> yeah btus are cray cray
[15:42:21] <Sync> working with a lot of overclocking phase change cooling units gave me a feel for them
[15:42:26] <Sync> but kW are better.
[15:42:34] <ssi> http://www.mysanantonio.com/news/local/politics/article/A-mysterious-dude-in-Iowa-keeps-accusing-Ted-Cruz-6785507.php
[15:42:37] <ssi> ahahahaa
[15:42:37] <ssi> troll level: expert
[15:44:57] <_methods> hahah
[15:45:50] <_methods> he's canadian and he likes nickelback................
[15:45:55] <_methods> 2 strikes you're out
[15:46:01] <ssi> :D
[15:47:04] <DaViruz> a funny detail regarding power and torque, the constant to convert between DIN hp and kW is 1.36
[15:47:04] <_methods> he probably use adobe flash too
[15:47:17] <DaViruz> and the constant to convert between Nm and ft-lbs is also 1.36
[15:47:23] <DaViruz> though they are in no way connected
[15:47:40] <malcom2073> Illuminati: confirmed
[15:48:23] <DaViruz> though they are in reverse, 1.36hp is 1kW and 1.36Nm is 1ft-lbs
[15:48:23] <Sync> mastertroll of all levels ssi
[15:48:24] <Sync> :D
[15:48:41] <DaViruz> reverse with regard to imperial/metric
[15:49:46] <Demure_> ...What! Clearpath doesn't allow international orders!
[15:50:04] <DaViruz> adding an extra line to the address label is just too much work
[15:50:20] <Demure_> Geez, that screws with the plans
[15:50:41] <Sync> DaViruz: more like they don't want to deal with all the ITAR shiet
[15:50:44] <DaViruz> find a freight forwarder
[15:51:03] <DaViruz> i usually use jet carrier, but i think they only deliver to sweden, norway and denmark
[15:51:24] <Demure_> I suppose I could, but that would increase the price even more. :( I'll have a look around.
[15:51:35] <DaViruz> for me it often turns out cheaper :)
[15:51:52] <DaViruz> epsecially if i can wait 3-ish weeks, then i can choose boat shipping which is super cheap
[15:52:35] <Demure_> Hmm, perhaps not the end of the world, then.
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[17:25:27] <ssi> too quiet :/
[17:27:26] * Tom_itx drops a hammer in an empty barrel
[17:29:02] <enleth> Tom_itx: a washing machine works better
[17:29:10] * Jymmm tosses Tom_itx into the dumpster
[17:30:30] * Jymmm opens a bag of corn chips (have you ever noticed the plastic is the the loudest thing ever when you are trying to be quiet?! lol)
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[17:39:33] <ssi> lol
[17:47:55] <FloppyDisk5_25> If I have MILL setup (through pncconf) and accidently type G7 (lathe radius mode)
[17:48:00] <FloppyDisk5_25> How do I get out of G7?
[17:48:36] <FloppyDisk5_25> I noticed a g55 g1 x5.25 move only went about 1/2 way, which seems to make sense, but it shouldn't do that...
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[17:49:57] <maxcnc> hi ;-)
[17:50:30] <FloppyDisk5_25> I checked my INI and no LATHE=1
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[18:01:46] <archivist> FloppyDisk5_25, probably a bug that it is possible
[18:02:54] <archivist> FloppyDisk5_25, but as g8 is the default did you try that to undo g7
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[18:04:58] <archivist> FloppyDisk5_25, but, it would be usable like that on a mill that has a rotary axis
[18:06:00] <FloppyDisk5_25> Sorry - had to step into my office...
[18:06:10] <FloppyDisk5_25> I have not tried g8, but I will.
[18:07:07] <FloppyDisk5_25> Let me go try it now, give me about 6 mins... need to run to the garage.
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[18:12:07] <FloppyDisk5_25> RESULTS for a g55 g1 x-5.25 move:
[18:12:19] <FloppyDisk5_25> g7 it travels to about -2.6 (1/2 way)
[18:12:49] <FloppyDisk5_25> g8 it travels the full dist to -5.25... seems to be okay. Just seems like i shouldn't be able to do the g7...
[18:13:09] <_methods> cnc machines are notorious for doing what you tell them to do
[18:13:25] <FloppyDisk5_25> _methods - yup, and I had no intention of the g7, fumbly fingers...
[18:13:38] <_methods> better than a .
[18:13:53] <_methods> those little bastards will get you in big trouble when they're in the wrong place
[18:13:55] <Loetmichel> _methods: exept when the servo drivers die....
[18:14:30] <FloppyDisk5_25> The thing that gets me is I don't even think I was trying to type a g-code close to 7, so that perplexes me. Maybe a Y, but that doesn' tmake sense either.
[18:16:40] <FloppyDisk5_25> I seem to have 'skill' at getting into places that are hard to get out of... Not sure I'd put that on a resume.
[18:17:00] <_methods> not unless you're trying to get a job breaking into jails
[18:17:01] <_methods> lol
[18:17:22] <_methods> or a wedding planner
[18:17:48] <maxcnc> weddingplaner in the usa is more then jailed for years
[18:18:04] <maxcnc> Jaingang type people
[18:18:08] <maxcnc> C
[18:19:12] <FloppyDisk5_25> machining question: I have 1/2" alum plate that I need to mount a shoulder bolt w/ 5/16-18 thread.
[18:19:47] <FloppyDisk5_25> I took used on F drill (0.257) which is recommended for the tap and figured my mill would be straight.
[18:20:07] <FloppyDisk5_25> I was lazy and didn't center drill (term?), and my hole is crooked as can be...
[18:21:02] <FloppyDisk5_25> So now, I'm thinking of using a 3/16" end mill to drill down and make a .257" 'round' hole. What's the best way to make that hole square?
[18:21:31] <archivist> you wanted round!
[18:21:40] * archivist dicks
[18:21:44] <archivist> ducks
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[18:22:09] <FloppyDisk5_25> I got round, I wanted square/perpendicular. My shoulder bolt looks like the leaning tower of pisa and the pulley attached to it rubs...
[18:22:52] <FloppyDisk5_25> I guess, is the hole not square because I didn't center drill (term?) or because you can't drill that straight?
[18:23:14] <FloppyDisk5_25> I think because I didn't center drill, the bit must have walked on the surface when it started and then the whole operation was shot...
[18:23:30] <archivist> you already have a sized hole the endmill will make it larger on one side, a slot
[18:24:06] <FloppyDisk5_25> I'm starting over... the plate is ruined, unless I get a different shoulder bolt.
[18:24:12] <gregcnc> I interpolate holes with end mills for tapping often
[18:24:46] <FloppyDisk5_25> gregcnc - I would think you could. I usually don't need to be square, but this is for a pulley and belt...
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[18:25:20] <FloppyDisk5_25> Anyway, I'll go the 3/16" endmill way and interpolate to a .257 hole, that should be square.
[18:25:31] <FloppyDisk5_25> It'll take longer than a drill bit op...
[18:25:48] <archivist> I got told waaaaay back in school to work up in size, not drill full size in one
[18:26:29] <FloppyDisk5_25> archivist - that would make sense and I think starting w/ a .257 and no center drilling is the problem (my bad - lazy)
[18:26:31] <gregcnc> just pay attention to your feed rate because cutting radius is close to tool radius
[18:26:57] <FloppyDisk5_25> gregcnc - yes. I cut so slow anyway, I'm a fraidy cat...
[18:27:05] <gregcnc> I use split point drills they rarely walk in aluminum
[18:27:20] <FloppyDisk5_25> I'll check that out - thanks.
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[18:34:36] <ssi> I spot drill every hole, no matter what
[18:35:28] <DaViruz> i spot weld every hole
[18:35:29] <maxcnc> agrees on ssi best comen way to do the job
[18:35:39] <DaViruz> since they are in the wrong place because i didn't spot drill
[18:35:41] <DaViruz> or something
[18:35:56] <maxcnc> Davirus cnc controled
[18:36:18] <FloppyDisk5_25> ssi: I think I will in the future. Was lazy.
[18:36:40] <ssi> get a proper spot drill, not a center drill
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[18:38:40] <FloppyDisk5_25> http://blog.cnccookbook.com/2012/05/15/when-to-use-a-spot-drill/
[18:39:07] <FloppyDisk5_25> ssi - didn't know that (cnccookbook). fortunatley, I have both center and spot drills, so I'll switch.
[18:39:11] <maxcnc> 2012 has been past
[18:39:34] <maxcnc> tols are cheeper cnc faster and work is taken into a better way
[18:40:00] <FloppyDisk5_25> One other comment (to myself) is to start using tool offsets and get tool lengths into a tool table, so I don't have to touch off each time... grrr.
[18:40:09] <maxcnc> who stops to see the futher ,is jailed in the past !
[18:40:57] <maxcnc> tool tabel use is the step from noob to pro
[18:41:05] <maxcnc> G41 g42
[18:41:31] <maxcnc> the gcode showes the Drawing numbers and the mashine calculates the ofset
[18:42:21] <maxcnc> Zero path miling is noob "not modelling"
[18:43:09] <maxcnc> the workplace will be cut of from the internet next wek
[18:43:28] <maxcnc> starting from friday
[18:43:48] <maxcnc> getting fiver
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[18:44:14] <maxcnc> hi Jep
[18:44:27] <maxcnc> is pete still in snow cover
[18:44:34] <jepler> hi maxcnc
[18:46:12] <maxcnc> im off Gn8 hard Day
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[18:53:52] <FinboySlick> Jymmm: Amazon AWS spot instances are cheap if you need a monster-machine for a few hours. They're leasing me 32CPUs with 160GB of ram on a 10Gbps pipe for ~40 cents an hour.
[19:04:07] <Jymmm> FloppyDisk5_25: That's 1.5 months compared to the $15/year VPS =)
[19:05:05] <Jymmm> FinboySlick: do you need that much cpu?
[19:06:35] <FinboySlick> Jymmm: Well, no, but that's the smallest machine you can get on a 10Gbps pipe.
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[19:20:27] <CaptHindsight> FinboySlick: bitcoin mining again? :)
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[19:21:01] <FinboySlick> CaptHindsight: Monstruous as it is, I doubt it'd be able to make more than it costs.
[19:21:15] <CaptHindsight> FinboySlick: is that for 32 actual single core cpu's or?
[19:21:30] <FinboySlick> CaptHindsight: It's virtualized so I doubt it.
[19:21:34] <CaptHindsight> or how do they measure
[19:21:36] <CaptHindsight> ah ok
[19:21:53] <FinboySlick> Still, it's fast.
[19:22:15] <FinboySlick> I really just need the network interface but hey.
[19:22:40] <CaptHindsight> might be the last day to order form China and get it shipped before the 16 day weekend
[19:24:20] <FinboySlick> CaptHindsight: You mean for me?
[19:24:30] <CaptHindsight> for anyone
[19:24:46] <FinboySlick> OK. I thought this was in reference to the network card or somesuch.
[19:24:49] <CaptHindsight> this has been a public service announcement
[19:25:13] <CaptHindsight> you may now go back to your regular programming
[19:25:32] <FinboySlick> Trust me, my programming is nothing but regular :P
[19:26:14] <FinboySlick> I meant anything but regular :P
[19:26:28] <CaptHindsight> 13 pc Erickson ER11 collet set at MSC $435, "similar" set on ebay from Hong Kong for $15
[19:26:50] <CaptHindsight> irregular
[19:27:03] <CaptHindsight> like the $15 collet set :)
[19:27:38] <gregcnc> I have some Erickson ER16 that don't fit my nuts, not sure which is irregular
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[19:28:11] <FinboySlick> Won't nuts make you regular?
[19:28:26] <CaptHindsight> yeah you have to be sure you have matching nuts
[19:28:55] <gregcnc> mine match, well after hernia surgery i'm not so sure
[19:29:27] <CaptHindsight> Maritool ER11's are ~$19ea
[19:30:04] <gregcnc> these were $8 new off ebay
[19:30:21] <gregcnc> but who knows
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[19:31:09] <gregcnc> I should check the same size in the Erickson set I hve
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[19:31:48] <CaptHindsight> the thread for the nuts should be the same
[19:32:02] <CaptHindsight> the inside shape of the nut may not be
[19:32:58] <CaptHindsight> low profile, hex, space saver heh
[19:33:14] <gregcnc> they nuts are Iscar/ETM with the spinny bushing
[19:35:06] <gregcnc> The collet is actually larger than most where the taper meets the groove
[19:35:39] <CaptHindsight> does Erickson sell a nut?
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[19:44:10] <CaptHindsight> confidence building ebay description : "We've had a customer satisfaction guarantee for a long time, So Just go for it"
[19:45:30] <Jymmm> FinboySlick: Ah, ok.
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[19:47:09] <ssi> ha
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[19:53:19] <gregcnc> capthindsight, The other Erickson 3/8" collet fits. It's hard to measure much difference, but i didn't try hard.
[20:00:28] <CaptHindsight> once in a blue moon I'll get a reject from Shars that is out of spec
[20:01:21] <gregcnc> These Erickson are India.
[20:03:07] <CaptHindsight> a maritool set is 1/2 the erickson price
[20:03:48] <CaptHindsight> same for Techniks
[20:04:04] <CaptHindsight> and Enco
[20:04:26] <FinboySlick> Always had wonderful service with Maritool too.
[20:04:46] <CaptHindsight> http://www.use-enco.com/1/1/3349-4512000-etm-er-11-collet-sets.html ETM
[20:04:49] <gregcnc> i have to try some Maritool stuff. Techniks i had were not good. I ebay this stuff. i got a Lyndex ER16 set for $90 new.
[20:04:57] <FinboySlick> My mill and still is too limited to see notice the difference in quality, mind you.
[20:06:50] <CaptHindsight> I mostly make one-offs that don't have any cosmetic requirements
[20:10:34] <CaptHindsight> others here need to make production quantities and need them as perfect as possible for the time and price
[20:14:37] <gregcnc> this looks fun
https://www.instagram.com/p/BBDZ3THvJ2S/
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[20:24:46] <CaptHindsight> is it an illusion or is that part off center?
[20:25:19] <gregcnc> illusion because you can see through the fins on top at the tailstock
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[21:53:06] <jepler> somebody should add gcode output to this and send me a pull request
https://github.com/jepler/dashing
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[22:01:06] <Deejay> gn8
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[23:29:15] <__rob> wondering if someone can help with with a setup question
[23:29:56] <__rob> say I mill a part out of some non perfect bit of stock, so I face the top, zero from that face, and then cut the part, leaving material underneath thats held in the vise
[23:30:14] <__rob> then I flip it, and want to face off whats left
[23:30:31] <__rob> how do you normally work out how much to mill off ?
[23:31:02] <__rob> assuming the stock wasn't perfect, then you zeroing off differnt points on it would give a different depth that comes off
[23:31:11] <JT-Shop> I put my height gauge on the parallels and call that Z-the finished part thickness
[23:32:53] <JT-Shop> or if you have a 1 2 3 block use that to set the tool height off the parallels
[23:34:24] <JT-Shop> I usually square up my material before starting a part
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[23:36:00] <__rob> yea, ok, that makes sense - thanks
[23:39:43] <__rob> guess what I was thinking about that was to get 90 degree faces can't be that easy
[23:40:19] <JT-Shop> very easy
[23:40:45] <__rob> opposite faces being parallel, but all 6 faces of a bit of stock being at 90 degrees to each other perfectly
[23:40:51] <JT-Shop> http://gnipsel.com/linuxcnc/machining/squaring.html
[23:42:02] <JT-Shop> I should make some fancy diagrams to make that easier to follow
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[23:43:18] <__rob> in my head theres always the possibility of a trapezoidal bit of stock
[23:43:30] <__rob> so parraele faces but not mutually perpendicular
[23:43:47] <__rob> no doubt I am wrong
[23:44:13] <JT-Shop> study the link a bit and you will see how it is done
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[23:45:24] <JT-Shop> as you rotate the stock about you always use the squared side to square the next and so on till your done
[23:49:05] <Simonious> Anyone here used DOORS and or other requirements software packages?
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[23:49:15] <Simonious> I'm interested in other options..
[23:51:30] <JT-Shop> what is DOORS?
[23:51:42] <JT-Shop> sound like your lost
[23:52:04] * Simonious chuckles
[23:52:14] <Simonious> I'm not lost, just looking for needles
[23:52:28] <JT-Shop> so what is DOORS?
[23:52:31] <zeeshan|2> rob_h: i use my vise as a parallel
[23:52:32] <zeeshan|2> er
[23:52:37] <zeeshan|2> vise or parallel as the reference plane
[23:52:49] <zeeshan|2> you dont need to rely on the work piece at all then
[23:53:03] <zeeshan|2> but the thing is when you mount your work piece upside down
[23:53:26] <zeeshan|2> i make sure i leave wayyy more material than needed
[23:53:34] <zeeshan|2> cause ive been screwed by tapers from a bandsaw kit
[23:53:36] <zeeshan|2> *cut
[23:53:38] <zeeshan|2> i cant type :/
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[23:54:31] * JT-Shop thinks zeeshan|2 is high on suburu fumes :)
[23:54:36] <zeeshan|2> haha
[23:54:40] <zeeshan|2> jt shop where is my data
[23:54:41] <zeeshan|2> :{
[23:55:05] <JT-Shop> std dev
[23:55:05] <JT-Shop> 0.005177283
[23:55:05] <JT-Shop> aver
[23:55:05] <JT-Shop> 1.5602698
[23:55:05] <JT-Shop> max
[23:55:06] <JT-Shop> 1.565957
[23:55:08] <JT-Shop> min
[23:55:10] <JT-Shop> 1.556323
[23:55:12] <JT-Shop> range
[23:55:14] <JT-Shop> 0.009634
[23:55:26] <JT-Shop> keep in your mind the part was not a super slick hole and it's a BP knee mill
[23:55:27] <zeeshan|2> but you said the hole wasnt really round:(
[23:56:02] <JT-Shop> it was round as it was turned on a lathe but the finish was lets say a bit rough
[23:56:10] <zeeshan|2> 5 thou std dev would be too much =/
[23:56:15] <zeeshan|2> hm
[23:56:21] <zeeshan|2> then there is something funky going on
[23:56:29] <zeeshan|2> even though the finish is rough
[23:56:32] <zeeshan|2> it should be round
[23:56:33] <JT-Shop> I don't think it was the probes fault
[23:56:43] <zeeshan|2> have you dont axis repeatability tests?
[23:56:47] <zeeshan|2> with a dial indicator?
[23:56:50] <zeeshan|2> *done
[23:57:03] <__rob> JT-Shop,
https://youtu.be/igfqYZPdQ78?t=479
[23:57:04] <JT-Shop> my final speed may have been too fast
[23:57:13] <__rob> thats what he does to stop it being trapezoid
[23:57:21] <__rob> which was the bit in my head that was confusing
[23:57:26] * JT-Shop can't look at utube off free time
[23:57:40] <__rob> ahh ok, well hes on your step 5
[23:57:55] <__rob> but when setting up on one of the sawn ends uses a small square to setup
[23:58:18] <__rob> against one of the other milled sides
[23:58:20] <JT-Shop> there are I'm sure many ways to the end
[23:58:23] <zeeshan|2> thats wayyyy too much work
[23:58:26] <zeeshan|2> the way that guy does it
[23:58:32] <__rob> yes, but how else do you do that
[23:58:39] <zeeshan|2> most of the time you dont even need all 6 sides square
[23:58:42] <zeeshan|2> cause youre going to be milling it off
[23:58:43] <__rob> to get the ends to be mutually perpendicular
[23:58:53] <__rob> no, but if you doo want them to be
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[23:59:00] <zeeshan|2> yes
[23:59:02] <__rob> thats surely the only way ?
[23:59:05] <zeeshan|2> but like see most of the time im machining stuff away
[23:59:08] <JT-Shop> zeeshan|2: did you read my link?
[23:59:19] <zeeshan|2> no i didnt
[23:59:32] <JT-Shop> http://gnipsel.com/linuxcnc/machining/squaring.html
[23:59:43] <JT-Shop> if you need a square block
[23:59:53] <zeeshan|2> it really depends on the part
[23:59:57] <zeeshan|2> those instructions are for a square block
