#emc | Logs for 2011-07-08

[00:00:00] <MuPie> is anyone actively developing crapahalic?
[00:00:14] <JT-Shop> wtf?
[00:00:46] <andypugh> MuPie: Not as far as I know.
[00:00:56] <JT-Shop> anyone listening to the Electric Prunes beside me?
[00:01:24] <MuPie> why was crapahalic dumped?
[00:01:48] <drmacro> JT-Shop: did you happen to look at what it did in the hal file? just curious
[00:01:57] <JT-Shop> yes
[00:02:00] <andypugh> I think it turned out to be a bit too limiting.
[00:02:24] <JT-Shop> it just connected xenable to three parallel port pins as I kinda expected
[00:02:27] <andypugh> There is an alternative approach using the Eagle schematic editor.
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[00:03:01] <MuPie> the eagle thing looks whacked
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[00:03:24] <andypugh> The problem is that if you are editing HAL yourself, you probably want to do something that the graphical tool can't let you do, so you still end up editing by hand.
[00:03:26] <drmacro> JT-Shop: cool! now I have to decide whether to mod the board like the guy over at CNCZone before or after I try it... :)
[00:04:21] <andypugh> At some point, if you need a graphical tool to understand your HAL you probably want to consider custom HAL components.
[00:04:34] <andypugh> drmacro: What's the mod?
[00:04:44] <JT-Shop> time for me to race with the dog through the woods looking for squirrels and rabbits
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[00:05:04] <MuPie> I have never used a custom hal component, does that mean writing a component from scratch in c?
[00:05:45] <andypugh> Yes, but not entirely from scratch.
[00:05:48] <JT-Shop> nope
[00:06:11] <JT-Shop> http://www.linuxcnc.org/docview/html/hal_comp.html
[00:06:34] <andypugh> There are macros that handle all the pin creation and polling, so it ends up being fairly straightforward.
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[00:07:20] <drmacro> andypugh: I was curious about some of the circuit I'd traced out, so I went looking for a schematic. The guy on CNCZone had reverse eng'd the schematic and found some errors in the clock input, enable input, and drive current
[00:07:48] <andypugh> Ah, OK.
[00:08:11] <drmacro> turns out I was right about several things, he had found already. Who ever laid out the board was no EE...I'm guessing.
[00:08:16] <andypugh> JT-Shop: And one day the comp docs might include "modparam" and "include"
[00:09:36] <tom3p> geda hal JT's thc.hal http://imagebin.org/162035
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[00:10:15] <tom3p> always finding more comps to be built :|
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[00:14:08] <drmacro> anybody here claim the username lasik2025 over on CNCZone.com?
[00:14:09] <andypugh> Right, time to sleep.
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[00:15:13] <tom3p> the gEDA .sch file for THC.hal http://pastebin.com/03dijmnV
[00:16:03] <Eartaker> I will claim Eartaker on CNCZone.com..... lol
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[00:19:05] <tom3p> and the auto generated .hal (like) file from the drawing http://pastebin.com/jrfCiuha
[00:19:51] <drmacro> Just curious if he was around, have some questions about the mods he did to the hyu.com TB6560 board.
[00:20:12] <tom3p> the netlist tools from gEDA can be massaged into a proper .hal file , i wrote some python to do such years ago
[00:20:13] <Eartaker> yeah, i searched the screen name after you posted that, found the thread
[00:21:54] <drmacro> the other mods are straight forward, in fact I think the board can be greatly simplified. But, I'm wondering why he originally double buffered the clock mod
[00:23:22] <Tom_itx> JT-Shop, is carbon fiber more stable than the others?
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[02:00:08] <geo01005> anybody ever use a pot for a feedback device?
[02:00:32] <geo01005> High precision feedback device.
[02:07:53] <Eartaker> feeback for what?
[02:20:22] <geo01005> rotary position. I'm thinking of making a spring pot for a DRO on my lathe.
[02:21:26] <geo01005> sorry, string pot.
[02:22:00] <geo01005> http://celesco.com/faq/cet.htm
[02:29:52] <geo01005> I'm trying to decide if I want to use a precision pot or an encoder.
[02:31:43] <Eartaker> encoder
[02:34:59] <geo01005> The trade off is that a pot has the feature that the measurement is absolute.
[02:38:14] <Eartaker> encoder is easier to implement and can also be very accurate
[02:38:17] <Gensor> Ello
[02:38:17] <geo01005> I have a very high precision pot that would actually have much higher resolution than an encoder.
[02:38:22] <Eartaker> look at the AMT-102 encoders
[02:38:59] <geo01005> Yes, the alternative is the cui encoders for a very low cost solution.
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[02:39:58] <geo01005> or the amt203.
[02:41:46] <Eartaker> what kind of lathe is it?
[02:42:37] <geo01005> oh, its a little 6" atlas.
[02:42:47] <geo01005> another alternative: http://www.austriamicrosystems.com/eng/Products/Magnetic-Encoders/Rotary-Encoders
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[02:45:27] <Eartaker> in that case there is no reason to go crazy on accuracy... the lathe itself cant hold tolorances under. .0005"
[02:45:52] <geo01005> I sort of want an easy DRO that I can mount on the lathe with magnets and take of and put onto another machine at a moments notice.
[02:46:26] <geo01005> That is why I want to use a string pot type sensor.
[02:47:20] <geo01005> So this machine my not be able to keep those tolerances, but other I may get could.
[02:48:42] <elmo40> so... I may be in possession of a mori seiki sl3 :) They said the boards are busted (again) It looks pretty much identical to this: http://www.mvalues.com/xdetails.cfm/QN/146598
[02:48:48] <elmo40> now... how to get it to my garage ;)
[02:50:51] <elmo40> any chance of loading EMC onto it?
[02:51:12] <elmo40> was thinking, how many original boards do I need if I want to use EMC?
[02:56:31] <Tom_itx> the drivers at least and sensor boards probably
[02:56:37] <Tom_itx> i dunno really
[03:00:10] <elmo40> depends on what is busted
[03:00:12] <elmo40> I guess
[03:00:54] <cradek> probably amps, not much else
[03:01:05] <cradek> spindle drive
[03:01:15] <cradek> lots of magnetics
[03:01:41] <cradek> power supply
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[05:10:36] <mrsunshine> ok, got a carbide blade, but its to big so i need to cut it, how do i cut it easiest? :=)
[05:14:06] <toastydeath> carbide is ground, not cut
[05:16:26] <KimK> Easiest? EDM!
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[05:17:02] <mrsunshine> toastydeath, i was thinking something like those diamond wheels for the dremel or something, thin thingies =)
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[05:18:23] <toastydeath> just keep it cool and slow
[05:18:57] <KimK> Do they make thin diamond wheels? I know about the thin abrasive wheels, but they're not diamond.
[05:19:33] <KimK> (Make them for the Dremel, I mean)
[05:19:43] <mrsunshine> well i can find diamond cutting disks atleast =)
[05:21:25] <mrsunshine> http://www.dremel.com/en-us/Accessories/Pages/ProductDetail.aspx?pid=545
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[05:23:26] <KimK> OK, nice. Well, let us know how it goes. And if it looks like it's going to be too tough, call some EDM shops and see what they quote you for "eyeball (or ink mark) is close enough".
[05:24:19] <KimK> s/EDM shops/wire EDM shops/
[05:24:21] <mrsunshine> huh ? =)
[05:25:39] <KimK> Well, you just want the blade a little narrower, right? You don't care about +/- 0.001" on-center?
[05:26:28] <mrsunshine> ye i want it cut in half length wise and then cut into pieces that is like 15 - 20mm wide
[05:27:45] <KimK> OK. I was just thinking that if it's something that they can do "by eye" or without fooling around with dial indicators and so forth, they might give you a lower rate.
[05:28:49] <mrsunshine> ye as long as i get it roughly in the center its not a problem as its just going to be brazed to the end of another piece =)
[05:29:02] <KimK> So if you could describe what you want, or mark it with a fine sharpie or something, that would help lower your quote. It shouldn't be too high, but they might have a ticket minimum. Try another shop?
[05:29:10] <mrsunshine> and i dont know what an wire EDM thing is
[05:29:37] <mrsunshine> going to try and cut it myself with the dremel i think =)
[05:29:41] <mrsunshine> just to know that it works
[05:30:24] <mrsunshine> one needs to learn to do stuff oneself =)
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[05:31:53] <KimK> It's a "cheese slicer" for any conductive material, it doesn't matter how hard or how brittle: http://www.youtube.com/watch?v=pBueWfzb7P0
[05:33:19] <mrsunshine> ahh
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[05:33:29] <mrsunshine> a "gnist" as we call it here :P
[05:34:00] <mrsunshine> i think
[05:36:01] <KimK> So try it yourself, but don't be afraid to give up if it's too difficult, you have choices.
[05:36:36] <KimK> And we enjoy hearing about your scraping adventures
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[10:13:54] <robin_> yeah, we had one of those routers made of MDF, but it got a termite infestation and we had to scrap it
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[10:17:08] <Loetmichel> robin_: MDF? you should've used Cooling fluid... scares the termites away and doubles the size of the router ;-)
[10:18:48] <archivist_emc> or disolves the router
[10:19:49] <Loetmichel> i mean, $me makes his CNC router also from "wood" but i use something called "siebdruckplatte" which is basically plywood with about 20 layers and glued with waterproof resin instead of white wood glue
[10:20:17] <Loetmichel> archivist_emc: man ironic ;-)
[10:20:20] <archivist_emc> marine ply
[10:21:50] <Loetmichel> archivist_emc: maybe. its used at Trucks for the loading bed, dark brown in colour, one side structured like a mesh other side plain resin
[10:22:42] <Loetmichel> http://www.schweiger-weilheim.de/images/ximg2335.jpg
[10:22:46] <Loetmichel> this stuff
[10:23:06] <archivist_emc> I know the stuff its one or two up on marine ply
[10:23:21] <Loetmichel> it has the advantage of being waterproff, and i mean: no dimension change even if submerged
[10:24:20] <Loetmichel> so one can build something like this and hasnt to worra about humidity/temperature:
[10:24:39] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=4935&g2_imageViewsIndex=1
[10:25:05] <archivist_emc> well wood still moves a bit, they would have to vacuum impregnate the wood with resin stop completely stop some expansion
[10:25:09] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=11205 <- or this ;-)
[10:26:08] <Loetmichel> my experience is: it moves not the slightest bit. it even repells water, even iin milled pockets.
[10:26:14] <robin_> ah, can you get coolant with termite repellant in it?
[10:26:17] <Loetmichel> maybe it IS vacuum infused?
[10:26:29] <robin_> I can't find that in the J&L catalogue
[10:27:31] <Loetmichel> robin_: i didn get your post as serious... so mine wasnt , too;-)
[10:27:38] <Loetmichel> +t
[10:27:49] <robin_> it's a real problem for wooden routers in our aream quite a few people lost them to termites
[10:28:03] <robin_> cast iron mills do a lot better in that respect
[10:28:19] <Loetmichel> robin_: shouldnt be a problem?
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[10:28:53] <robin_> I do know a guy that lost some welding equipment to badgers though
[10:29:19] <Loetmichel> build a housing around it and get a electric heater fan to het the whole thing up to about 100°c... 2 hours... weekly.... sould kill any living thing inside the router ;-)
[10:29:42] <robin_> badgers seem very interested in welding gear, I guess they use it to build reinforcement in their tunnels
[10:29:44] <Loetmichel> heat, should
[10:30:04] <Loetmichel> welding gear-> electrodes?
[10:30:09] <Loetmichel> or the cabling?
[10:30:14] <robin_> yeah, and the power cources
[10:30:29] <robin_> they took two mig sets and the bottles
[10:30:55] <psha[work]> Loetmichel: cover it with gasoline and burn for 2 hours each week
[10:31:00] <Loetmichel> a badger can move about 50 to 100 pounds of copper and steel? Impressive!
[10:31:27] <Loetmichel> robin_: oh, you mean two-legged badgers
[10:31:28] <Loetmichel> !
[10:32:16] <robin_> I guess badgers make natural welders, as they already have a little "mask" with their fur
[10:32:19] <Loetmichel> psha[work]: that would be bad for teh structura lelemets ;-)
[10:32:34] * robin_ wonders how far he can go with this one
[10:32:43] <Loetmichel> robin_: hihi
[10:34:31] <Loetmichel> psha[work]: and even if you dont belive it: even the wodden routers manage to work aluminium
[10:35:16] <Loetmichel> but granted: if you want precise (like better than 0,02mm) you have to move SLOW
[10:35:18] <psha[work]> Loetmichel: sure it's possible to use wood to craft metal parts
[10:35:56] <psha[work]> for example if you crush car into pile of logs it would be well crafter after it
[10:36:54] <Loetmichel> http://www.cyrom.org/MC/jumpjetkopterteile1.avi
[10:37:58] <Loetmichel> done that on the router i've build for my old boss
[10:39:13] <Loetmichel> and that beast was rumming 3 years straight 8 hours a workday in Carbon, glass fibre and wood. Occasional aluminium sheets.
[10:39:23] <Loetmichel> running
[10:42:01] <Loetmichel> tolerances in carbon fibre sheets: about 0,02mm with moderate feedrate and about 0,1mm with insane feedrates (like 2400mm/min with a 2mmm tc-bid @ 24krpm trough a 3mm thick Carbon sheet)
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[10:43:22] <Loetmichel> was perfect for the job it had to do (parts for model planes) and was relatively cheap, about 4000 eur in parts for 1500mm*1020mm*160mm moving space
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[10:53:56] <robin_> 1500 x 1020?
[10:54:05] <robin_> strange size choice
[10:56:23] <robin_> I think I would have gone 1500 x 1250
[10:56:41] <robin_> then I culd process 1250x1250 standard sheets
[10:57:22] <robin_> or even 2000 x 1250 then I could do 2000 x 1000 standard sheets also
[10:58:07] <robin_> I guess 1500 x 1020 can do a 1500 x 3000 sheet cut into 3 pieces?
[10:59:52] <robin_> my next one will be smaller ... 600 x 600
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[11:16:37] <mazafaka_> robin-bobin, ha-ha
[11:18:18] <mrsunshine__> heh, the dremel standard cutting disks just got eaten by the carbide :P
[11:18:24] <mrsunshine__> i guess i need diamond disks anyways :P
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[11:20:50] <mazafaka_> Do you use dremel with flexible shaft? I feared of the longevity of my Skil Tool and bought one with flexible shaft (USD 40) instead of the one without it (about USD 25)
[11:22:07] <mazafaka_> of the small longevity -- that it wll wear off too soon
[11:22:42] <mazafaka_> Loetmichel: What railings that machine had? What power of the motors?
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[11:24:58] <mazafaka_> Loetmichel: give the name of that machine in the link. Web surfing isn't for me for a while, it would be nice to read its specs.
[11:28:12] <mazafaka_> Speaking of brushes on the drills, one has catched the sleeve of my robe and before I has drawn out the power cable of the drill from the plug on the wall, my palm was scratched a bit.
[11:30:49] <mazafaka_> I decided to keep angle grinders and metal brushes for drills or grinders away from children or younger brothers. Electric machines are usually too powerful to work for some time unless it heats up too much. Pneumatic tools are somewhat safe to use (be aware of very high RPM they make) but the air compressor cost starts at about USD 250 :/
[11:38:42] <mazafaka_> It was in the garage. And some simple pneumatic tools just stop when they get squeezed.
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[12:10:21] <Loetmichel> robin__: the standard sheets Glass fibre are 1280*1050 so the machine is buildt for it
[12:10:25] <Loetmichel> (was)
[12:11:14] <Loetmichel> mazafaka_: there is no name 'cause i've buildt it myself ;-)
[12:12:26] <Loetmichel> the machine had 25mm linear rails from THK and 16*4 Ballscrews from isel, and 3A 56mm steppers, 1,2Nm
[12:12:45] <Loetmichel> 2 steppers on y, one stepper on x and z
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[12:14:22] <Loetmichel> and some toothed belt to connect the 2 y screws
[12:14:42] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=7086
[12:14:47] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=7080
[12:16:09] <Loetmichel> for sync
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[12:19:52] <mazafaka_> ok
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[12:21:07] <Loetmichel> mazafaka_: i can send you the pictures as mail, if you wish
[12:21:24] <mazafaka_> no
[12:21:30] <mazafaka_> i see them
[12:21:33] <Loetmichel> ok
[12:21:48] <mazafaka_> What, 3A 56 mm motors are enough for aluminum?
[12:22:05] <Loetmichel> looks like it ;-)
[12:22:28] <mazafaka_> heh, i just can't really imaging the forces.
[12:22:39] <Loetmichel> the machine isnt TOO fast: at about 4200mm/min G0
[12:23:10] <mazafaka_> i want something to mill steel, and wooden bed of machine doesn't inspire me, and also rails...
[12:23:33] <Loetmichel> so the steppers are very powerful in combination with ten 16*4mm ballscrews (small tpi!) and the 2:1 belt drive
[12:24:18] <Loetmichel> mazafaka_: the machine was desinged to mill GF and CF and Plywood and balsa
[12:24:19] <mazafaka_> and there are no backlashes in the drive? Looks good.
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[12:24:33] <mazafaka_> to mill girlfriend?
[12:24:35] <mazafaka_> ;)
[12:24:52] <Loetmichel> the milling of aluminium was never intended, even so its possible
[12:24:59] <Loetmichel> Glass fibre sheets
[12:25:14] <Loetmichel> and carbon fibre sheets
[12:25:15] <mazafaka_> yeah
[12:25:21] <Loetmichel> up to 10mm thickness
[12:25:32] <mazafaka_> carbon seems pretty hard
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[12:26:02] <Loetmichel> it eats the diamond clad tungsten carbide bits, but ist is relatively easy to mill
[12:26:30] <mazafaka_> i worked with plywood a lot, rebuilt the table for PC and so on. Did you use glue for rigidity on the plywood connections?
[12:26:39] <Loetmichel> but the dust is cancer-inducing thus te vacuum head on the mill
[12:27:12] <Loetmichel> no, just about 1000 5mm by 50mm spax screws ;-)
[12:27:58] <Loetmichel> the whole macine weights about 300kg
[12:28:00] <mazafaka_> why haven't glued anything? I once couldn't disassemble glued parts.
[12:28:12] <Loetmichel> and 90% of it is the marine plywood ;-)
[12:28:22] <mazafaka_> My table for PC was about 80 kg in weight :)
[12:28:36] <Loetmichel> in case i HVE to disassemble something ;-)
[12:28:38] <Loetmichel> HAVE
[12:29:19] <Loetmichel> if you look here: http://www.cyrom.org/palbum/main.php?g2_itemId=4053
[12:29:23] <mazafaka_> but plywood seems lack rigidity for cutting steel, about 2 mm at once with e.g. 6-mm end mill
[12:29:28] <mazafaka_> i see
[12:29:28] <Loetmichel> thats the inside of the macine base
[12:29:44] <Loetmichel> without the upper plywood mountend
[12:30:03] <Loetmichel> the plywood is 21mm thick
[12:31:18] <Loetmichel> the stability comes from the squere structures inside the bed and the beam
[12:31:24] <Loetmichel> square
[12:31:31] <Loetmichel> not from the plywood itself
[12:31:47] <Loetmichel> and from the trucklowad of screws ;-)
[12:31:53] <Loetmichel> truckload
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[12:33:16] <mazafaka_> i will end some repair at home, where my labour is the main part of the work and take some self-made table from friend. I think to buy some PC (I think need one without embedded video) and set of electronics
[12:34:16] <mazafaka_> screws can squeeze unless the force is not too high. then they are being drawned out alltogether with wood from the plywood.
[12:35:42] <mazafaka_> ... and later create some frame of metal tubes.
[12:36:00] <Loetmichel> man torque-limiting electric screwdriver
[12:36:03] <Loetmichel> ;-)
[12:37:45] <mazafaka_> hah, electric one... i only have a man-powered screwdriver, my hands are strong as hell!
[12:38:47] <mazafaka_> this is one truly health-recreating activity, to turn the screws 40 or 60-mm long
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[12:42:03] <mazafaka_> These belts are not offered for sell at Russian on-line stores.
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[12:46:52] <Loetmichel> mazafaka_: which belts?
[12:48:54] <mazafaka_> Oh, this on is smiling to me: http://www.cyrom.org/palbum/main.php?g2_itemId=7071
[12:48:55] <Loetmichel> as for the recreating activity: i am 43, 108kg , 180cm tall and lazy as hell... i have 4 battery powered drilling machines.. and that is good ;-)
[12:49:09] <mazafaka_> belts for ratio
[12:49:19] <Loetmichel> AH
[12:49:44] <mazafaka_> Loetmichel: that's truly wrong set, you're not Harrison Ford then ;)
[12:49:52] <Loetmichel> almost every car has them... so they should be avialbe, maybe not is so small ;-)
[12:50:34] <mazafaka_> yeah, the one for cars, but these round things for belts...
[12:50:35] <Loetmichel> Me? harrison ford? not really... not even close ;-)
[12:50:54] <mazafaka_> Still, could be, could be...
[12:51:25] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=9080
[12:51:30] <Loetmichel> i dont think so ;-)
[12:51:31] <mazafaka_> What are the railings?
[12:51:46] <Loetmichel> railings?
[12:51:48] <mazafaka_> you're old.
[12:51:52] <Loetmichel> on the big CNC?
[12:51:57] <mazafaka_> yes
[12:52:34] <Loetmichel> THK 25mm linear ball bearings
[12:53:55] <mazafaka_> How do they squeeze without the backlash? I don't quite understand. They are offered ad about USD 22 fro 16-mm in diameter and USD 28 fro 25-mm in diameter.
[12:55:37] <mazafaka_> Oh, it's not for now to choose, will think of a frame at first. Reading the part about electronics from some book about self-made CNC machine.
[12:55:43] <Loetmichel> https://tech.thk.com/de/products/thk_cat_main_fourth.php?id=1138
[12:55:48] <robin_sz> 108kg?
[12:56:02] <Loetmichel> HSR25-LA
[12:56:34] <Loetmichel> robin_sz: yes, i've been married 11 years, bevore that i hat about 70 kg ;-)
[12:56:56] <robin_sz> well, you need to excercise with your wife more ;)
[12:57:18] <Loetmichel> corection: i am STILL married (since fr, 10.13.2011) ;-)
[12:57:33] <Loetmichel> 10.13.200
[12:57:34] <Loetmichel> sorry
[12:57:38] <Loetmichel> 2000
[12:57:43] <psha[work]> third attempt :)
[12:57:45] <mazafaka_> he is married since friday
[12:58:10] <psha[work]> ~3kg/yr is ok
[12:58:13] <psha[work]> not so much
[12:58:23] <mazafaka_> marriage is ...a ...self-killing union
[12:58:37] <Loetmichel> robin_sz: maybe so, but my wife is just tooo good at the Stove... and i eat to much;-)
[12:58:40] <psha[work]> i've ~0.25kg/yr
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[12:59:37] <psha[work]> but i'm usking bike/skates to go from home to work and back :)
[13:00:06] <Loetmichel> mazafaka_: especially: since friday, the 13th of october in the year 2000
[13:00:44] <Loetmichel> psha[work]: see, i use my Opel Omega Caravan...
[13:00:55] <mazafaka_> we need something like mill but capable to be lathe at the garage. I still think to buy something from scrap, remove useless gears and weight and add relatively non-cheap (about USD 300) motors
[13:00:58] * psha[work] writes down: don't forget about wedding date...
[13:01:19] <Loetmichel> 'cause i'm way off trainig to cope with 12km one way
[13:01:32] <mazafaka_> Loetmichel: that explains everything
[13:02:01] <psha[work]> Loetmichel: heh, when driving car it may take me twice more time :)
[13:02:18] <Loetmichel> psha[work]: that is the raso we wed at tis special date: its easier to remember for me ;-)
[13:02:50] <psha[work]> using bike it's around 30 minutes
[13:02:59] <Loetmichel> psha[work]: i get to work in the car in about 15 minutes
[13:03:04] <mazafaka_> additional body weight is maybe unimportant, but only unless you start thinking how much fuel your car spends.
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[13:03:24] <Loetmichel> with the Bicycle it lasts about an hour and i am drenched in sweat
[13:03:48] <psha[work]> 12km? hour?!
[13:03:58] <psha[work]> yay
[13:04:01] <Loetmichel> yes
[13:04:13] <Loetmichel> because i cant use the highway
[13:04:17] <Loetmichel> forbidden in germany
[13:04:27] <psha[work]> hm, are you riding _on_ bike or bike is riding on you? :)
[13:04:47] <Loetmichel> so i have to go on forest "streets" half the distance
[13:04:50] <mazafaka_> it has become almost impossible to drive bicycle at usual road nowadays. Cars are almost touching you on the bike, it's more dangerous than downhill competition.
[13:04:52] <psha[work]> i don't use highways either but my trip is inside town
[13:04:53] <robin_sz> cycling is forbidden on normal roads in germany?
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[13:05:21] <Loetmichel> robin_sz: no, but on highways
[13:05:26] <psha[work]> Loetmichel: that's great if you have choice to ride through forests/parks
[13:05:28] <Loetmichel> cars and trucks only
[13:05:32] <robin_sz> what is highway?
[13:05:41] <Loetmichel> autobahn
[13:05:41] <robin_sz> Autobahn?
[13:05:42] <psha[work]> on my previous work most part of my trip was trhough parks
[13:05:55] <robin_sz> ah ok, now if you said Autobahn, I would have understood :)
[13:06:27] <Loetmichel> i.e in my case: "kraftfahrstraße"
[13:06:40] <robin_sz> I go to Germany from time to time ... Wiesbaden, Munich, Frankfurt
[13:06:44] <mazafaka_> in Russia, there are many not careful drivers. They forget they were pedestrians and they kids are pedestrians immediately after they sit down into the car. They create hardcore on the streets.
[13:07:17] <psha[work]> Loetmichel: and you are sweating since you have some overwheight :)
[13:07:24] <robin_sz> Wiesbaden I quite like, the others two, not so much
[13:07:30] <mazafaka_> psha[work]: in Russia, you can not ride the bicycle or whatever making less than 40 km/h on the autobahns
[13:07:34] <Loetmichel> psha[work]: the problem is that the ways trough the woods are not paved
[13:07:58] <Loetmichel> and go up and down like crazy ;-)
[13:08:00] <psha[work]> Loetmichel: that's ok if they are not coverted with dirt
[13:08:10] <psha[work]> ground tracks are nice for bike
[13:08:12] <Loetmichel> they ARE dirt!
[13:08:18] <psha[work]> ah :) that's different :)
[13:08:35] <psha[work]> riding 30+ trhough dirt is not easy task :)
[13:08:41] <Loetmichel> no tarmac on it ;-)
[13:08:41] <mazafaka_> yeah, the clothes will be dirty
[13:09:08] <mazafaka_> flat smooth tarmac makes it possible to cycle easily
[13:09:18] <psha[work]> btw i'm with my 186 height/~80kg weight is a bit overwheited
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[13:09:35] <Loetmichel> just 2 lines of the mounties' car tyres in the wood ground ;-)
[13:09:36] <psha[work]> and thus in spring sweating a lot (first month of _active_ season)
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[13:10:06] <mazafaka_> Loetmichel: and puddles full of fun, try it
[13:10:11] <mazafaka_> ha-ha
[13:10:14] <psha[work]> then weight is dropped to ~78 and everything is ok
[13:10:43] <mazafaka_> puddles after rain, in the forest... What a wonderful, wonderful world...
[13:11:09] <Loetmichel> psha[work]: my doc also recommendet to go to work with my bike... Blodd pressure issues...
[13:11:14] <Loetmichel> but i am WAY to lazy
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[13:12:08] <jdhNC> I might make it to work twice before being killed
[13:12:14] <psha[work]> heh, it's better to be active and healthy then lazy and ill ;)
[13:12:28] <Loetmichel> as long as i am capable to outrun and -work my 23 year olt apprentice who is 15cm higher and more muscle than fat: everything in perfect working order ;-)
[13:12:39] <Loetmichel> s/olt/old
[13:12:50] * mazafaka_ goes buy waffles 'cause he's like jackass on his mtb, and sit dirty (my clothes are whole in mud, plan to take another ride on ground roads unless the evening will have fully come)
[13:13:43] <mazafaka_> Loetmichel: switchimage.org has Phlog - photos from the Netherlands. Be inspired with women on bicycles and scooters.
[13:13:57] * Loetmichel has to work some 2 more hours...
[13:14:24] <Loetmichel> mazafaka_: inspired? why?
[13:14:28] <Loetmichel> i am married...
[13:14:42] <mazafaka_> Loetmichel: http://www.switchimage.org/phlog/phlog.html
[13:14:46] <psha[work]> Loetmichel: one hour here ;)
[13:15:19] <mazafaka_> say 'there are pavement on the photos I see, and nothing else, darlin'
[13:15:31] <Loetmichel> and if i see women on scooters i remember our last vacation in Hamburg: 1 week of shopping and sightseeing for my wife, 1 week of workout for me...
[13:16:00] <Loetmichel> my wife is sitting in a wheelchair cause of defect hip joint.
[13:17:15] <Loetmichel> ever tried to push ~100kg wheelchair 8 hours over granite cobblestones?
[13:17:43] * Loetmichel ha enough workout for the next half year ;-)
[13:17:51] <Loetmichel> had
[13:17:59] <mazafaka_> i also had problems with back, but i only balance badly, it's a bad trickster of me on bike or skateboard. I usually proclaimed raw vegan diet unless i have tired from this. I break this diet with waffles and beer (to not be perniciously focused on something complicated).
[13:18:30] <psha[work]> mazafaka_: hm, you drink beer made of blood and meat?
[13:18:42] sliptonic_afk is now known as sliptonic
[13:18:45] <jdhNC> no vegan waffles?
[13:18:48] <psha[work]> i thought that's it ok for vegetarian
[13:18:53] sliptonic is now known as sliptonic_
[13:19:02] <Loetmichel> hmmm
[13:19:07] <psha[work]> jdhNC: i suspect vegans hate waffles and ban them dispite material they are made of
[13:19:28] <jdhNC> probalby, they are weird... like religious fanatics
[13:19:33] <Loetmichel> i am a (more or less) pure carnivore ;-)
[13:20:13] <mazafaka_> I had fallen from the second floor to the first in the building on the garden, low part of back onto pile of shovels, when i was 8 or 9. Now (26) starting to balance better again, worked at height.
[13:21:03] <skunkworks> so there is a temperature sensor in the head of the k&t - seems to be about 10kohm at about 120F and about 16kohm at 70f
[13:21:05] <mazafaka_> psha[work]: no, but I have realised it is better sometimes to drink some amount of good beer, than sitting and thinking.
[13:21:13] <Loetmichel> so, anyway, if i dont work a little now my boss will likely kill me ;-)
[13:21:15] <skunkworks> I will have to track it to see if it is linear.
[13:21:31] <mazafaka_> yeah
[13:21:43] <psha[work]> mazafaka_: it's always better to drink beer then sitting and thinking! :D
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[13:21:55] <Jymmm> skunkworks: one more number will tell you
[13:22:08] <skunkworks> :)
[13:22:23] * psha[work] don't drink
[13:22:26] <mazafaka_> psha[work]: yeah, but not too much
[13:22:47] <skunkworks> it will be nice to have temp compensation. the spindle grows a bit over .005 when it is hot
[13:22:59] <mazafaka_> we drank at work sometimes
[13:23:43] <Jymmm> skunkworks: get a bigger machine with more meat!
[13:24:12] <skunkworks> right....
[13:25:25] <mazafaka_> heh, a lot of women legs at http://www.switchimage.org/phlog/phlog.html :)
[13:25:31] <Jymmm> skunkworks: You can't expect much stabilization from that micro desktop machine of your
[13:25:37] <Jymmm> s
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[13:42:24] <mazafaka_> jdhNC: waffles are thermally-cooked whatever thermally-cooked lacks enzymes and ultimately kills you
[13:43:00] <mazafaka_> be it true or not, it's worth, and at least a belief as well
[13:43:37] <jdhNC> right, just like religious fanaticism
[13:43:48] <Jymmm> I'd rather eat thermally cooked waffles then chemically cooked ones.
[13:44:09] <jdhNC> I'm thinking we should start a campaign to eliminate vegans.
[13:44:09] <mazafaka_> no, why. Mosquitos do not bite on such a diet. I slept with opened windows in apartment
[13:44:32] <Jymmm> they dont bite if you eat garlic either.
[13:44:48] <mazafaka_> no, you're surely joking. Vegans are usually full of energy to do something, and easy-to-ask people
[13:45:11] <jdhNC> they are a threat to my way of life
[13:45:26] <mazafaka_> depends on you
[13:45:27] <Jymmm> jdhNC: waffles?
[13:45:31] <jdhNC> vegans
[13:45:55] <mazafaka_> "waflles which a vegans in its turn" he wants to say.
[13:47:03] <JT-Work> LOL the cooking channel is here now
[13:47:15] <cradek> more like the crazy channel
[13:47:16] <psha[work]> jdhNC: i guess instead of eliminating it's better to eat them
[13:47:26] <psha[work]> to show superiority of meat-based diet
[13:47:44] <cradek> there should be a cable channel that's just crazy people yelling. then we could stop looking to politicians for entertainment.
[13:47:49] * JT-Work agrees with cradek
[13:47:53] <Jymmm> cradek: And you're on the Board too, aren't you?
[13:48:11] <cradek> Jymmm: the board has no official position on waffles
[13:48:32] <Jymmm> lol
[13:48:40] <skunkworks> cradek: so there is a temperature sensor in the head of the k&t - seems to be about 10kohm at about 120F and about 16kohm at 70f
[13:49:31] <skunkworks> I would be tempted to use one of these arduinos... Doen't have to be realtime.
[13:49:36] <cradek> skunkworks: are you going to use it for something?
[13:49:55] <skunkworks> I think it would be pretty easy to offset z for temp comp
[13:50:13] <cradek> could you convert it to a voltage to read with a spare 7i33 input?
[13:50:16] <skunkworks> the spindle grows 5-10 thou when hot
[13:50:23] <cradek> wow!! that's a lot
[13:50:26] <skunkworks> yes
[13:50:30] <cradek> grows in length?
[13:50:45] <skunkworks> yes
[13:50:49] <cradek> holy cow
[13:51:05] <skunkworks> cradek: 7i33 has a analog input?
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[13:51:24] <cradek> sorry, I'm on drugs
[13:51:28] <skunkworks> heh
[13:51:42] <skunkworks> one thought is a voltage to freq converter.
[13:51:55] <skunkworks> run it into one of the encoder inputs
[13:52:10] <cradek> and use velocity - clever
[13:52:24] <skunkworks> right
[13:52:40] <skunkworks> others have done similar for other analogy inputs
[13:53:22] <skunkworks> (probably why they had a temp sensor in the spindle. :)
[13:53:24] <JT-Work> that's how my torch tip voltage gets into EMC
[13:53:40] <cradek> some of hal_input is analog - wonder how hard it is to pretend you're a hid
[13:54:12] <cradek> or of course you could a-to-d and use several bits of digital
[13:54:18] <jdhNC> temp sensor could be to detect bearing wear?
[13:54:24] <skunkworks> the spindle sticks out from the ways a good foot - so when that goes from 70f to 120f - I am sure that is a few thousands.
[13:55:03] <cradek> have you measured the length growth?
[13:55:14] <jdhNC> 0.00000645 in/in/F
[13:55:21] <skunkworks> cradek: that is why I was thinking of the arduino - I would have to look at what jepler has done.
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[13:55:39] <skunkworks> cradek: yes - but not conisistantly
[13:56:17] <cradek> brb
[13:57:12] <cpresser> skunkworks: http://www.leobodnar.com/products/BU0836A/
[13:57:26] <cpresser> thats what i am using for analogue input via hal_input
[13:57:31] <skunkworks> I get for 60f increase on 12 inches - .00468 :)
[13:57:48] <skunkworks> cpresser: cool - thanks!
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[14:06:59] <JT-Work> cpresser: pretty neat device
[14:08:14] <cpresser> i was thinking of building one myself, but 35€ is way to cheap :)
[14:08:48] <cpresser> it uses a microchip pic 18F2550 with buildin usb-support. so its a quite simple device
[14:09:49] <JT-Work> $60 to us :/
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[14:10:59] <JT-Work> I seem to recall PCW saying they might develop one
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[14:15:45] <cpresser> i work a lot with those pic microcontrollers. if you have a little equipment, it migth take you about one day to develop one yourself
[14:16:22] <cpresser> the HID-Firmware itself is free to use from microchip. you just have to add A/D stuff and some lines of code to map it to the hid-memory
[14:17:03] <Loetmichel> [15:44:50] <mazafaka_> no, you're surely joking. Vegans are usually full of energy to do something, and easy-to-ask people <- MUHAHA... i experienced that the other way around: vegans and vegetarians ar usally miserable, powerless and with no drive.
[14:20:23] <mazafaka_> these are vegetarian intellectuals who proclaim cereals.
[14:20:42] <mazafaka_> People of potato and cabbage salad differ
[14:20:56] <cradek> you two should arm-wrestle and get it over with
[14:21:37] <mazafaka_> we need to build remote ring, and robots
[14:22:43] <mazafaka_> cradek: we decided to do it at you, will you do what we say then? Get some wooden ah... thingies from there and create an arena in the ...ah ...middle of something ah...
[14:23:21] <cradek> I have a pencil, screwdriver, scissors, and a DVI cable here
[14:23:23] <cradek> will that do?
[14:23:32] <mazafaka_> And be sure to tell wife to not destroying it
[14:24:07] <mazafaka_> cradek: you're rich, you can open a restaurant in Bratislava!
[14:24:25] <cradek> yay, until now I didn't know I was rich
[14:24:54] <syyl> then you could give some money to me :D
[14:25:04] <syyl> you wont miss it
[14:25:07] <jdhNC> 6bn people in the world, how many can afford their own VMC?
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[14:39:21] <mazafaka_> Do I need to think of additional cooling or at least a radiator on, say, South Bridge of the motherboard of my computer since I use RTAI-mode in Linux (and there are no limits on the timings when chips are working and when they have a rest - and this alll heats up)?
[14:40:03] <cradek> I have not heard of anyone needing to do that
[14:41:10] <mazafaka_> oh, RTAI does not *additionally* heats up the motherboard's chips?
[14:41:54] <mazafaka_> So, laptop just isn't working because of its ACPI-depended architecture, not because it becomes overheated.
[14:41:55] <cradek> I don't know
[14:42:53] <mazafaka_> It is not important what video cards, Nvidia or ATI, to use?
[14:43:19] <cradek> I use old matrox video cards on my realtime system
[14:43:21] <cradek> s
[14:43:38] <cradek> you should avoid the nvidia binary driver and possibly the ati driver
[14:43:57] <cradek> you can use pretty much any video card in vesa mode
[14:43:57] <mazafaka_> But libgl1-mesa-swx11.deb will provide OpenGL for any of these video cards, right?
[14:44:30] <mazafaka_> vesa, or mesa... I wish I easily knew what does it mean.
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[14:49:10] <SWPadnos> vesa is a video driver which runs the VESA-compliant video hardware
[14:49:16] <mazafaka_> 8'' = 8 inches, but 8' = ? (I am reading the book, "Patrick Hood-Daniel, James Floyd Kelly - Build Your Own CNC Machine (Technology in Action) - 2009")
[14:49:17] <SWPadnos> mesa is a software openGL library
[14:49:24] <SWPadnos> feet
[14:49:30] <mazafaka_> oh, ok
[14:49:32] <cradek> 1' = 12"
[14:49:43] <mazafaka_> oh-hhhh
[14:49:49] <mazafaka_> magic
[14:49:59] <mazafaka_> :)
[14:50:03] <cradek> sometimes you see 1'2" which is feet-inches (in total, 14 inches)
[14:50:20] <SWPadnos> with units like these, who needs metric?
[14:50:27] <cradek> or sometimes it is written 1-2
[14:50:30] <mazafaka_> oh, really
[14:51:01] <mazafaka_> they are so heartfelt... And, you usually have a leg to measure something...
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[14:52:47] <cradek> haha heartfelt
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[15:12:10] <skunkworks> 35k cold - 10k 120f
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[15:24:39] <Loetmichel> re @ home
[15:26:11] <mrsunshine__> found a perfect tungsten carbide blade today =)
[15:26:25] <mrsunshine__> two bolt holes and everything, just need to make a handle and sharpen it properly =)
[15:27:24] <syyl> make the handle not to short
[15:27:33] <syyl> mine is about 400mm
[15:27:41] <syyl> its a nice lenght to work with
[15:27:59] <mrsunshine__> yeah =)
[15:28:04] <mrsunshine__> thinking of using tubing
[15:28:10] <mrsunshine__> and put some holding device in the end
[15:29:00] <syyl> hmm
[15:29:17] <syyl> for myself i like it, if it can flex and spring a bit
[15:29:36] <syyl> used flat steel, 20x4mm
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[15:30:29] <mrsunshine__> hmm, maybe
[15:31:09] <tom3p> skunkworks :the spindle growth. it will only grow so much at a given temp, so add a heater band like old moog jig grinders, warm it up till stabile ( ~1hr) then it will stsy same
[15:31:13] <tom3p> stay same
[15:31:19] <mrsunshine__> the blade i found is about 12mm wide tho, i think it will be very nice as in these freakin small dovetails i just cant cram a 20x5mm scraper in there :P
[15:31:29] <syyl> hihi
[15:31:42] <syyl> you can also grind a big bevel on the backside
[15:31:47] <syyl> then you can go in deeper
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[15:32:33] <mrsunshine__> bloody expensive blade tho
[15:32:46] <mrsunshine__> 27 usd :P
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[15:33:43] <syyl_> hmpf
[15:33:46] <syyl_> 24h disconnect
[15:33:53] <syyl_> [1732:40] <syyl> what did you use?
[15:33:53] <syyl_> [1733:00] <syyl> blade of a power planer?
[15:34:14] <mrsunshine__> color scraper
[15:34:16] <mrsunshine__> blade
[15:34:20] <syyl_> ah, nice
[15:34:27] <mrsunshine__> about 50mm long, 12mm wide and two bolt holes
[15:34:36] <mrsunshine__> so i can grind both sides and then if it gets dull i just flip it over :P
[15:34:51] <mrsunshine__> seems very nice =)
[15:34:53] <syyl_> perfect :)
[15:35:01] <mrsunshine__> kinda expensive like i said but i guess carbide will last me
[15:35:19] <syyl_> if you dont drop it :)
[15:35:19] <mrsunshine__> and i get it small and so as i want it =)
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[15:37:12] <jdhNC> the truck driver didnt' call... they delivered my mill without me being there to inspect for damage
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[15:41:01] <mrsunshine__> atleast carbide bites on the stupid harspots on the mill =)
[15:41:09] <mazafaka_> Are there any mills where the rails are above the tabletop? And the bridge is between them
[15:41:36] <syyl_> yeah
[15:42:03] <syyl_> but they are that large you could park a full sized battle tank under the "bridge"
[15:42:07] <mazafaka_> How are they called?
[15:42:38] <mazafaka_> uh... I don't have a battle tank.
[15:43:20] <syyl_> damn it :D
[15:44:10] <syyl_> bridgegantry?
[15:44:27] <mazafaka_> who knows?..
[15:44:35] <Loetmichel> gantry crane ;-)=
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[15:45:11] <syyl_> http://inv.sterlingmachineryventures.com/machpict/012971/100206.jpg
[15:45:16] <syyl_> something like that?
[15:45:51] <syyl_> http://cfnewsads.thomasnet.com/images/large/582/582619.jpg
[15:45:56] <syyl_> not to small :D
[15:46:07] <tom3p> haha make a teeny trunnion with these http://pcbmotor.com/
[15:46:56] <syyl_> most of those machines are for large scale prototyping
[15:47:03] <mazafaka_> I mean, for garage. Some rigid bed is needed.
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[15:49:38] <mazafaka_> 3A motors are 15 W because of 5V voltage?
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[16:02:11] <mazafaka_> or 36V are applied to drivers?
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[16:55:34] <tom3p> join #eagle
[16:55:38] <tom3p> crap
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[16:59:14] <mazafaka_> danimal_garage: So, http://www.xs650chopper.com/ is the place for Yamaha owners?
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[17:22:16] <danimal_garage> only if you own an xs650 i guess
[17:22:20] <danimal_garage> i never go there
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[17:45:29] <danimal_garage> mornin
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[17:50:01] <andypugh> XS650? Are any of those still running?
[17:50:51] <danimal_garage> pretty popular for bobber/chopper builds
[17:51:10] <andypugh> JT-Shop: The dude is in G18.
[17:51:49] <JT-Work> oh crap
[17:52:13] <andypugh> mshaver: Hi. I thought that 8i20 was working, so stopped looking at it. If you had said there were problems, I would have kept at it.
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[17:52:22] <IchGuckLive> Hi all
[17:52:24] <robin_> xs650 ..
[17:52:25] <robin_> ick
[17:52:29] <willburrrr2003> good moning all :)
[17:52:52] <IchGuckLive> A wounderfull Shuttle start in Florida Today
[17:53:24] <mshaver> andypugh: It worked fine for me on my desk, but when put in a machine it went berzerk.
[17:53:57] <willburrrr2003> Posted my Hal file to the EMC forums now that it is working great :) , Hopefully it helps anyone else setting up a C6 board to work with EMC the link is http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/catid,10/id,11151/lang,english/#11277
[17:54:32] <willburrrr2003> Mshaver: what went beserk? Sorry , logged in and didn't see the rest of your messages
[17:55:11] <mshaver> I've been working with Andy on the Mesa 8i20, a brushless motor drive.
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[17:56:38] <andypugh> Any idea how many revs the motors have done by the time the trouble starts?
[17:57:13] <IchGuckLive> willburrrr2003: please also include a link to the board or a picture
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[17:58:17] <willburrrr2003> IchGuckLive: do you mean on here or in my forum posting?
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[17:59:05] <mshaver> andypugh: The motor homes, then stays stationary, even as the current command rises to 1.0
[17:59:55] <andypugh> Oh. So not a rounding error as PCW is suggesting, then.
[17:59:58] <IchGuckLive> willburrrr2003: in the post of the forum
[18:00:08] <andypugh> Hall sensors?
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[18:00:42] <willburrrr2003> IchGuckLive: Will do :)
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[18:01:44] <mshaver> Halls & an encoder! Hal file is here: http://www.mattshaver.com/8i20/8i20.hal
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[18:05:51] <mshaver> andypugh: Just saw you & Peter's e-mails in my inbox
[18:08:22] <andypugh> Does it lock stationary, or is it slack?
[18:09:50] <mshaver> stationary
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[18:15:51] <andypugh> Yes, I got that, but is it locked, or slack?
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[18:21:22] <mshaver> locked
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[18:26:03] <andypugh> Most common cause of that is that the encoder scale needs to be negative.
[18:31:20] <mshaver> andypugh: just sent you an e-mail update - Hall signal problem at the moment
[18:33:26] <andypugh> Hall-only would have been worth a try, if not for that.
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[18:35:51] <mshaver> It may be working if he can fix the Hall sensors, so I have to wait... It's very frustrating to do all of this by "remote control"!
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[18:36:51] <andypugh> If it is set up for Halls, you shouldn't need to "home" it.
[18:37:19] <andypugh> You can just start up in Hall mode, and it should switch to encoder when it can..
[18:37:24] <PCW> mshaver can you duplicate his setup at your location? I think getting 2nd hand feedback make this pretty hard to debug
[18:37:33] <PCW> makes
[18:39:34] <PCW> BTW Andy it would be nice if the driver checked the data register (after it verifies that the command register is clear)
[18:39:35] <PCW> this will tell you if you have a transfer error (any one bit indicates a failed transfer)
[18:40:11] <mshaver> PCW: I have a setup here, but it works for me. My setup uses an 8 pole, coil pattern 34, 1kW motor attached to the 8i20, 7i47, and 5i20 on my desktop machine. Dave (in MI) has a 4 pole, coil pattern 30, 2.2kW motor (the only one we have now). His setup is installed on an actual machine.
[18:40:25] <andypugh> The way the angle calcs are done, the remainder should be accurate to 1/3 degree up to 10,000,000,000 revolutions, which is quite a long run-time.
[18:41:44] <PCW> I'm just leary of floating point for mod operations, as everything needs to be double
[18:42:15] <mshaver> Once we get past this there are a lot of other issues that need to be addressed like establishing drive communication without the HV up, and how to deal with drive errors in EMC ie. recoverable vs non-recoverable, etc.
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[18:49:34] <PCW> Random CRC errors should be fairly harmless (they will show up as transfer errors, that is a '1' bit in the data register at the conclusion of a DOIT command)
[18:49:36] <PCW> You should be able to run at 4 KHz, tolerate about 50 Usec of host jitter and never get a command registe not clear error (which really indicates a timing violation)
[18:49:37] <PCW> at 4KHz an occasional missing packet should not be even noticeble
[18:57:16] <andypugh> Conversely I am nervous of integer division operations where the number 6 is so common.
[18:57:45] <PCW> I would not do division either
[18:58:48] <andypugh> There is no choice, the electrical angle is generally a fraction of the encoder angle.
[18:58:55] <mshaver> I was thinking more of how to recover if communication can't be started on the first try. Sometimes the status light doesn't start blinking when the 8i20.hal file is sourced and then I have to stp, rest the real time stuff (halrun -R then halrun -U), unplug and re-plug the 8i20 power to reset it, then try again. I'm not sure how this is going to be done (especially the reset of the 8i20) in EMC. It may be that when we get finished the co
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[18:59:56] <PCW> That should never happen, are you sure you have the latest firmware on the 8I20?
[19:00:21] <andypugh> You should be able to get the light flashing by starting and stopping the sserial channel
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[19:02:28] <mshaver> I think we have version 1.D
[19:03:29] <andypugh> Next time you don't have comms, try setting 5i20.0.sserial.port-0.run to false then to true again.
[19:03:51] <andypugh> (It might want to be tied to the main EMC2 on-off)
[19:04:13] <PCW> There is one version with a startup bug (that requires resetting 8I20) but thats definately been fixed
[19:05:36] <PCW> (8i20 version)
[19:06:40] <mshaver> I am talking about things I experienced some time ago, we may not have these problems now. It's hard because I can't see exactly what's happening out in MI.
[19:11:35] <PCW> Actually if you have the ability to start and stop sserial, you can work around the HV issue by only starting the sserial after HV is on
[19:13:13] <PCW> (the rev 22 firmware allows starting and stopping single channels as well as the whole sserial interface)
[19:13:29] <mshaver> PCW: These are the things we'll have to make work in EMC.
[19:15:57] <andypugh> It's a bit of a moving target, I also have to account for some sserial modules having 5 registers, and some having 6.
[19:16:24] <PCW> I would drop the 5 register support
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[19:16:53] <andypugh> I think that this evening's job might actually be re-assembling the 8i20 machine
[19:17:20] <andypugh> If I drop the 5-register support then won't all the existing firmwares break?
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[19:17:33] <PCW> what FPGA card do you use for testing Andy?, I can cobble together the latest bitfile
[19:17:44] <andypugh> 5i23
[19:17:48] <PCW> every one should update
[19:18:15] <PCW> mandatory update...
[19:18:31] <andypugh> I probably need to get that change in before the 2.5 release then.
[19:19:31] <PCW> the latest also supports 7I66,7i69,7i70,7i71, and 7I76 and 7I77 (on 5I25)
[19:20:06] <PCW> oh and 7I73 pendant infc
[19:20:39] <andypugh> I love this, it's like a mobile, victorian, gazebo dangling over a river. https://picasaweb.google.com/ian.a.nichols/NewportTransporterBridge
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[19:22:28] <mshaver> My other problem is that I don't have enough disk space on my desktop machine to build EMC (I know this is silly). I've been relying on the buildbot to make me new debs, but it's broken for the 2.5 branch now. I'll have to do something about either my computer or the buildbot...
[19:23:53] <PCW> andypugh: Thats really funny like an extension of the rope, pulley bridge
[19:24:03] <andypugh> mshaver: I have been building EMC2 on a SD card for months now. Might be the simplest way.
[19:25:17] <andypugh> PCW: They make some sense, you get to keep a large headroom for shipping, without building an embankment.
[19:25:18] <PCW> Ive got to re sync my system as well it busted in a funny way now and will no longer build EMC
[19:25:38] <tom3p> http://en.wikipedia.org/wiki/Transporter_bridge meet the emc robocrane http://www.nist.gov/el/isd/ms/robocrane.cfm
[19:25:42] <mshaver> I have a huge external hard drive for data, but my root disk is an 8GB CF card. I don't have enough room on it to install the essential build tools. Maybe I need to do some house cleaning :)
[19:26:24] <PCW> Yea I guess if the traffic is light enough (and it looks like a fun ride)
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[19:53:21] <geo01005> PCW: 7I73 pendant? I don't see it on your website
[19:58:47] <PCW> only the price...
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[20:00:25] <geo01005> new product?
[20:00:37] <geo01005> goes along with the 5I25?
[20:00:42] <PCW> Ive got pictures of 6 new cards I need to get on the website, 7I73 included but have trouble finding that old round-toit
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[20:03:29] <geo01005> I see. Are you selling them yet?
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[20:05:18] <PCW> Not yet but we have first prod lot of most. Still need manuals, EMC support (just additions to SSERIAL driver) 7I73 needs a comp to handle keypad/lcd data streams
[20:06:06] <mazafaka_> geo01005: Are you from Argentina?
[20:06:24] <geo01005> nope, utah, USA
[20:06:37] <mazafaka_> I knew one geo-smth earlier
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[20:10:03] <geo01005> sorry, that isn't me.
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[20:15:52] <geo01005> Wow PCW, I can't wait to see those products.
[20:18:42] <geo01005> Let me understand though, SPI != SSerial?
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[20:32:40] <PCW> Yes SPI /= SSERIAL
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[20:38:11] <PCW> SSERIAL is the name of our FPGA side smart serial interface (up t 8 UARTs and a ~50 mips CPU with custom firmware to talk to our remote cards)
[20:38:13] <PCW> protocol is standard async serial so we can use standard uProc on remote device, baud rate is 2.5 M baud so we can do update rates up to 5-10KHz
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[20:40:41] <geo01005> I see. Very cool.
[20:42:36] <geo01005> How about the analog on the 7I73, is that ADC or DAC? I would guess it would be for a POT for applications like feed rate override.
[20:43:51] <PCW> The idea was to present a simple interface for the driver, so mailbox register are written, a all channel send command is written and mail box register are read
[20:43:53] <PCW> no protocol details exposed to the driver
[20:44:56] <PCW> The 7I73 has 8 pins that can be either 4 encoders or 8 analog ins (or some mix) It has PWM out capability
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[20:46:08] <geo01005> Fairly low resolution analog? 10 or 12 bit?
[20:47:31] <PCW> Yes only 8 bits (A-D is 10 but to limit packet size we truncate to 8)
[20:47:57] <PCW> "10"
[20:48:09] <PCW> "8"
[20:48:31] <willburrrr2003> I am getting ready to set up my spindle encoder this weekend, since I have spindle speed control working now should I go ahead and set up for closed-loop spindle speed control using a PID loop or is ther e a better way to accomplish this?
[20:48:38] <geo01005> I see, any plans to add a sserial compatible high resolution ADC?
[20:49:30] <PCW> We are looking into it
[20:49:55] <geo01005> (I don't know in many people want that)
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[20:51:07] <PCW> on the 7I73 the analog inputs are really just for knobs
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[20:52:29] <PCW> How high res? Sine we are limited to 5 - 10 KHz update rates, a 24 bit oversampling type converter might make sense
[20:52:34] <PCW> since
[20:53:59] <geo01005> I'm thinking of 16 bit or more. 24 bit would be much higher resolution than I would ever need for anything.
[20:54:36] <geo01005> ( I have pipe dreams of making an injection molding machine, I need to be able to measure plastic pressure)
[20:54:59] <PCW> We would probably be limited to 6 channels
[20:55:12] <PCW> per module
[20:55:32] <PCW> so not high density A-D
[20:57:06] <andypugh> willburrrr2003: PID is the way to do it.
[20:57:18] <mshaver> PCW: I'm getting the motor shipped to me next week, so soon I'll have the actual production setup in front of me. We can take this up again then, or I will go crazy :)
[20:57:56] <mshaver> The whole remote debugging thing is getting old...
[20:57:58] <andypugh> cradek: Give me a deadline for 8i20/sserial bugfixes. I can't work witout deadlines
[20:58:32] <cradek> andypugh: July 22 23:59UTC
[20:58:52] <mshaver> What year?
[20:58:58] <andypugh> Make it sooner, I always miss deadlines :-)
[20:59:02] <cradek> haha
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[21:02:14] <mshaver> Signing off now to go down to the shop...
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[21:02:45] <PCW> "mshaver The whole remote debugging thing is getting old" Yeah its like the old telephone party game
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[21:08:03] <willburrrr2003> Andypugh: Thanks, I have alot of reading to do on setting up closed loop spindle control and using it right, and one example from off web search. Do you know of any examples in the forums? I am having trouble getting forum searches to display on all 3 of my computers, the pages come up completely blank 3/4 of the time....
[21:08:43] <andypugh> willburrrr2003: It's a wierdness. But if you click up in the address box and hit enter again, they generally appear.
[21:09:14] <andypugh> It sometimes helps to delete the bit than says something like /lang.swahili/ at the end of the URL
[21:09:25] <willburrrr2003> Andypugh: ok I will try that, thanks
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[21:18:00] <PCW> andy: freeby.mesanet.com/svss8_8.bit is rev 22 sserial bitfile for 5I23
[21:19:52] <PCW> bbl
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[21:37:42] <danimal_garage> hi
[21:40:26] <willburrrr2003> heya danimal
[21:41:02] <willburrrr2003> btw Any, thanks for the forums tips re-clicking in the address bar seems to work
[21:41:34] <willburrrr2003> that was supposed to be BTW : Andypugh: up above ;)
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[21:47:19] <danimal_garage> i wish there was a way to watch netflix on linux
[21:49:39] <willburrrr2003> there is.... but you would have to install vmware and setup a virtual WINDOWS box to do it (ue)
[21:49:47] <seb_kuzminsky> netflix? is that like the pirate bay?
[21:50:08] <danimal_garage> yea i dont want to do that willburrrr2003
[21:50:32] <danimal_garage> seb_kuzminsky: no, it's legal, you pay a monthly fee
[21:50:54] <danimal_garage> and you don't download the movies, you can only stream them
[21:50:55] <willburrrr2003> I know Danimal, was being smartass :-p hehe
[21:51:22] <danimal_garage> well you're right, but at that point i would just reinstall windows
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[21:54:35] <danimal_garage> does anyone know anything about the google chrome os?
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[22:05:38] <willburrrr2003> My encoder when will have 2 optical sensors 1 for index, and 1 for the 33(resolution encoder?) . Do I setup a seperate encoder in EMC for each of them?
[22:06:45] <andypugh> willburrrr2003: No, each encoder module expects 3 inputs (but can be configured to work with 1 or 2)
[22:07:17] <andypugh> If anyone is interested in engineering details/history of that mad bridge: http://www.newport.gov.uk/xpedio/groups/public/documents/report/n_008952.pdf
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[22:07:54] <andypugh> willburrrr2003: With only pulse and index you need to set "counter mode"
[22:08:56] <willburrrr2003> andypugh: thanks for the clarification, so If I am understanding the manual pages right then I would have my index pulse on phase-z and my resolution encoder pulses on phase-A ?
[22:09:12] <andypugh> yes
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[22:09:57] <willburrrr2003> Andypugh : like this "setp encoder.0.counter-mode 1" ?
[22:10:06] <andypugh> Aye
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[22:11:52] <willburrrr2003> sweet, some things seem to be coming easier the more manual configuring I do to my EMC, really starting to enjoy it m ore with each function I learn how to do :-)
[22:13:24] <danimal_garage> yea it's pretty cool when you get the hang of it
[22:13:46] <danimal_garage> it was/is rough for me, but you seem to be getting the hang of it rather quickly
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[22:15:44] <willburrrr2003> thanks, I am trying :) I program all sorts of devices for the panel shop I work at here in Seattle, I think that helps me with some of the concepts I am dealing with learning EMC
[22:18:23] <danimal_garage> cool
[22:18:43] <andypugh> Ooh, this is new to me: http://www.youtube.com/watch?v=J2OAISkHHbI&feature=related
[22:18:49] <Tom_itx> ok JT-Shop, i think i have all i need except the tip to make my probe now
[22:18:55] <Tom_itx> picked up a M4 tap today
[22:19:06] <andypugh> Tom_itx: Don't strain yourself :-)
[22:19:22] <danimal_garage> shoulda told me, i have a box of m4 taps!
[22:19:34] <Tom_itx> they're not here though
[22:19:48] <danimal_garage> i switched to forming taps, so i got a bunch of new ones here i believe
[22:20:04] <andypugh> I need a new M8 tap. I also need a new 16 ER 1.0 ISO insert.
[22:20:32] <danimal_garage> i have the tap, but only 1 and i need it!
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[22:20:49] <nicko> Andypugh: I bought those connectors you mentioned in the forum
[22:21:00] <nicko> about to open the bag and try em out for size
[22:21:12] <andypugh> Speakon?
[22:21:55] <nicko> for the Mesa IDC headers
[22:22:08] <nicko> Harwin I think were the brand - but I got a cheaper brand
[22:22:18] <nicko> (*much* cheaper)
[22:22:28] <Tom_itx> oh you mean scsi cables
[22:23:00] <nicko> hmmm
[22:23:03] <willburrrr2003> andypugh: do I need to scale the index pulse AND the encoder pulses from pulses per sec to pulses per min?
[22:23:27] <danimal_garage> i get those locally pretty cheap. i can even buy the cables and ends seperately so i can make them up to like 3 feet long
[22:23:30] <nicko> They fit - all good, I got single line in a bunch of different sizes
[22:23:48] <andypugh> willburrrr2003: No. The index will only be used at all for rigid tapping.
[22:23:57] <nicko> the crimping tool was MEGABUCKS so I'll just crimp with pliers or solder
[22:24:05] <JT-Shop> Tom_itx: nice
[22:24:17] <JT-Shop> I've been slacking on that project
[22:24:33] <Tom_itx> it'll take forever to make the body on my old lathe
[22:24:57] <JT-Shop> do you have the design up in cad?
[22:25:03] <Tom_itx> not really
[22:25:09] <Tom_itx> just started part of it
[22:25:16] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/temp/cnc/probe.jpg
[22:25:25] <Tom_itx> no solid model to see
[22:25:26] <willburrrr2003> Andypugh: ahhhh so the index pulse takes the place of that threading indicator wheel...makes sense :)
[22:25:30] <Tom_itx> i'll wing the rest
[22:26:01] <danimal_garage> Hi John
[22:26:09] <danimal_garage> http://www.thechopperunderground.com/forum/index.php?showtopic=50575&st=100
[22:26:14] <danimal_garage> muffler i made for my bike
[22:26:18] <JT-Shop> Hi Dan
[22:26:37] <factor> That amaco make a mold stuff is bunk
[22:26:45] <andypugh> nicko: They do exist more cheaply: http://www.rapidonline.com/Tools-Fasteners-Production-Equipment/Hand-Tools/Tacking-Crimping/Crimping-tool-for-PCB-connectors/30535/kw/crimping+tool
[22:26:53] <factor> trying to make a mold with the casting resin itself
[22:27:16] <Tom_itx> for what?
[22:27:30] <JT-Shop> danimal_garage: cool muffler
[22:27:38] <JT-Shop> is it loud?
[22:27:39] <Tom_itx> tap plastics has all sorts of stuff for that
[22:27:54] <factor> just tried ot get it from hobby lobby
[22:28:04] <factor> mix a mold would be good for non detail stuff
[22:28:10] <factor> not for gears
[22:28:15] <factor> or wheels
[22:28:31] <factor> we will see how the casting resin will work as a mold
[22:28:40] <factor> ridid mold.
[22:28:41] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/sumo_files/sumo_wheelmold_index.php
[22:28:51] <factor> rigid mold
[22:29:20] <factor> nifty
[22:29:37] <Tom_itx> shore 30 urethane
[22:29:45] <factor> if this does not work , I will order some correct stuff on line I think its call 70/70 or something
[22:29:48] <Tom_itx> you could use it for molds too
[22:29:55] <andypugh> Tom_itx: You could knurl the ali tube for better bonding
[22:30:05] <Tom_itx> it worked ok
[22:30:22] <andypugh> This is a robot Sumo device?
[22:30:23] <factor> :)
[22:30:25] <factor> looks cool
[22:30:27] <Tom_itx> coat it with silicone first then the urethane and that would bond it good
[22:30:32] <Tom_itx> andypugh yes
[22:31:20] <Tom_itx> i made a set for dhylands too
[22:31:28] <JT-Shop> Tom_itx: http://imagebin.org/162203
[22:31:44] <willburrrr2003> Andypugh, one last question before I have to get back out on the shop floor , when I scale my 33 pulses on my encoder from pulses per sec to pulses per min, would my scale.0.gain be 1980 as the example you refered me to uses gain of 60 for 1pulse per rev ?
[22:31:45] <andypugh> Tom_itx: We did that once, on BBC Technogames: http://robotwars.wikia.com/wiki/S.M.I.D.S.Y.
[22:31:58] <JT-Shop> http://imagebin.org/162204
[22:32:25] <JT-Shop> http://imagebin.org/162205
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[22:33:11] <Tom_itx> JT-Shop i gotta figure out a way to drill the dowel holes
[22:33:24] <Tom_itx> i don't have an indexer or anything similar
[22:33:35] <andypugh> willburrrr2003: You might want an encoder scale of 33 and a separate scale of 60 somewhere around the PID. Otherwise it won't count revs right for rigid tapping etc.
[22:33:47] <Tom_itx> i'll make some sort of jig
[22:34:08] <danimal_garage> tom, how many holes?
[22:34:13] <Tom_itx> 3
[22:34:18] <Tom_itx> 120 deg apart
[22:34:32] <andypugh> Tom_itx: You have a mill?
[22:34:42] <danimal_garage> how about a hex 5c collet block?
[22:34:45] <JT-Shop> Tom_itx: I have a 6 sided collet holder that I plan on using
[22:34:53] <willburrrr2003> andy, not sure I am following what you are saying ....
[22:35:01] <andypugh> You could mill guide-slots
[22:35:05] <Tom_itx> all i have is a 4jaw
[22:35:06] <danimal_garage> yea, what JT-Shop is using
[22:35:13] <Tom_itx> andypugh i plan to do just that
[22:35:47] <danimal_garage> a collet block set is pretty cheap
[22:35:53] <danimal_garage> like $30
[22:35:54] <Tom_itx> http://imagebin.org/162204 didn't load
[22:36:04] <andypugh> If you centre the spindle to the work using a DTI and zero, you can even mill using polar coordinates (Which I only ofund out today that EMC2 understands)
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[22:36:59] <andypugh> http://linuxcnc.org/docs/html/gcode_main.html#r1_1
[22:37:40] <JT-Shop> Tom_itx: loads for me try againg
[22:37:53] <andypugh> Worked for me too
[22:38:04] <Tom_itx> there it goes
[22:38:18] <Tom_itx> so you're gonna use set screws on the side?
[22:39:24] <Tom_itx> what's the OD on your body?
[22:39:25] <andypugh> Actually, Tom_itx, Just mill open-topped slots and clamp the rods down into them.
[22:39:41] <Tom_itx> i'll get em drilled
[22:39:49] <JT-Shop> Tom_itx: this is the one for my BT30 face mill holder http://imagebin.org/162206
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[22:40:46] <Tom_itx> i didn't put the balls halfway into the plastic like you did
[22:40:49] <JT-Shop> I changed the set screws to the top
[22:40:57] <Tom_itx> you wouldn't need the slots if you did
[22:41:17] <Tom_itx> i think i'm gonna make that 'ghetto' one
[22:41:22] <Tom_itx> with the plastic bottom
[22:41:25] <JT-Shop> I wanted the balls to be real secure
[22:41:27] <andypugh> If you have the balls close together relative to the diameter of the rods, you don't need the slots either.
[22:41:55] <danimal_garage> Briefs then, JT-Shop
[22:42:02] <Tom_itx> i used .187 balls on .25 centers
[22:42:06] <andypugh> I think I will make the Video one first.
[22:42:09] <Tom_itx> with a .125 dowel
[22:42:14] <willburrrr2003> Andypugh: are you saying that I should use two scale functions, if so can you please clarify more as to the why?
[22:42:20] <JT-Shop> Andy do you think it would be better to move the balls closer together
[22:42:31] <Tom_itx> i don't think i could make a decent thread or i'd do the other one
[22:42:41] <Tom_itx> JT-Shop, i would
[22:42:42] <andypugh> willburrrr2003: No, the encoder function has a scale.
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[22:43:00] <JT-Shop> let me see what that looks like
[22:43:30] <andypugh> You could set encoder scale to 33 x 60 and encoder-velocity would be in RPM. But then you would only get 1/60th of the pitch you expect when rigid-tapping.
[22:43:31] <Tom_itx> or use a larger dowel
[22:44:42] <andypugh> So, encoder-scale needs to be 33 (or 66, I am not sure if it counts both edges) and then you convert to rpm with a HAL scale function.
[22:44:50] <willburrrr2003> andypugh: so then the 33 encoder pulses would go here "encoder.0.position-scale 33" ?
[22:44:56] <andypugh> Yes
[22:45:59] <JT-Shop> moved them from 20° apart to 19° apart and that looks better
[22:46:03] <Tom_itx> i could recess the base of mine and slot the bottom screw holes and add set screws to the side i suppose
[22:46:15] <willburrrr2003> ok, and where would I put the 60 for the PID? would it be the scale module in that wiki example?
[22:46:31] <Tom_itx> JT-Shop, i calculated mine to be .250 apart on the arc
[22:46:35] <andypugh> Yes, I think so (without actually looking at the wiki example :-)
[22:46:59] <JT-Shop> also my balls are a bit lower than the ball radius
[22:47:14] <andypugh> You should stop wearing Boxers
[22:47:58] <JT-Shop> mine are about 0.232...." apart
[22:48:28] <andypugh> I believe that carbide balls would be less prone to corrosion, while still being conductive.
[22:48:40] <JT-Shop> all this talk is nuts LOL
[22:48:45] <willburrrr2003> cool, cool....starting to wrap my brain around this a bit better :) thanks Andy for your patient help :)
[22:48:52] <mazafaka_> andypugh: speaking of it, what, better to not wear underpants?
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[22:49:28] <andypugh> I regret the comment, and how much it lowered the tone.
[22:49:31] <Tom_L> JT-Shop, why are you getting a carbon fiber tip?
[22:49:55] <JT-Shop> seemed like a good idea at the time
[22:50:01] <willburrrr2003> wasn't there a conversation yesterday about not having things hanging out loose while working with machines, keep those balls safely stored ;) :-p
[22:50:08] <andypugh> Tom_L: Because he is a motorcyclist. They can't resist carbon dibre
[22:50:09] <danimal_garage> andypugh: i made a similar comment earlier and noone caught it, or it was completely ignored lol
[22:50:24] <Tom_L> i looked at the same thing in ceramic
[22:50:41] <Tom_L> i didn't see a stainless one
[22:50:56] <Tom_L> ceramic is about 40 bucks
[22:51:56] <andypugh> Tom_L: Ceramic would be very wrong for the suspension balls.
[22:52:11] <Tom_L> too brittle?
[22:52:13] <willburrrr2003> well guys, off to get finished up here before I have to head home... have a good evening (or morning/day/afternoon depending on location ;) ) all
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[22:53:09] <Tom_L> andypugh, we were looking at:
[22:53:15] <Tom_itx> http://www.carbideprobes.com/
[22:53:57] <andypugh> Tom_L: No, just that the suspension balls need to be electrically conductive.
[22:54:08] <Tom_L> we're talking about the tip
[22:54:13] <Tom_L> not the insides
[22:54:24] <andypugh> That's alright then :-)
[22:54:43] <andypugh> Try eBay. Genuine Renishaw ruby styli are about $20 there
[22:54:50] <JT-Shop> time to fetch the fish guys
[22:56:11] <Tom_L> first hits were $99
[22:58:12] <andypugh> You can buy direct from Renishaw for that!
[22:58:23] <Tom_L> yup
[22:58:30] <Tom_L> i found some M2 for around 20
[22:58:35] <Tom_L> but those are too small
[22:59:52] <andypugh> http://www.renishawdirect.com/en/styli/A50003712.aspx
[23:00:14] <andypugh> And that's a ceramic shaft one.
[23:00:31] <andypugh> Selection page here: http://www.renishawdirect.com/en/styli--9759
[23:00:43] <Tom_L> i was looking there yesterday
[23:02:55] <andypugh> They seem to start at £25. SO you could buy from Renishaw and sell on eBay at a profit....
[23:03:39] <Tom_L> maybe i'll solder a ball bearing on the end of some bailing wire
[23:04:09] <andypugh> I think hot-melt glue might work better.
[23:04:21] <Tom_L> no ac in the shop
[23:04:24] <Tom_L> it might melt off
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[23:05:47] <andypugh> <Ponder> My not-exactly-a-girlfriend works for a CMM manufacturer...
[23:06:21] <Tom_L> i don't need .00001 accuracy on my sherline
[23:07:02] <Tom_L> how brittle is ceramic?
[23:07:09] <Tom_L> that's my only concern with those
[23:07:20] <andypugh> I have a ceramic screwdriver.
[23:07:57] <andypugh> Yttria-modified zirconia is very tough indeed. I shared an office with a guy making engine valve springs out of it.
[23:08:17] <Tom_L> i don't think i've ever used ceramic cutters either come to think of it
[23:09:01] <andypugh> Look at it this way, how often does the handle of your teacup give way on you?
[23:09:16] <Tom_L> just once, then it's a mug
[23:10:05] <andypugh> These are so pretty: http://www.mahr.de/index.php?NodeID=29
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[23:10:29] <Tom_L> http://www.carbideprobes.com/CMM%20Replacement%20Styli.pdf
[23:10:43] <Tom_L> i'm lookin at the 811-6r or 812-6r
[23:11:04] <danimal_garage> i took a cermaics class once, it was pretty tough. My ash tray ended up looking more like a turtle
[23:12:00] <andypugh> You might find a 6mm ball too big more often than you will find it too small.
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[23:13:26] <Tom_L> i don't remember what we used on the cmm's but i think they were smaller
[23:14:23] <Tom_L> maybe a 50mm M3 would be better
[23:14:34] <andypugh> That is what I was looking at
[23:14:43] <Tom_L> 808-3R
[23:14:45] <Tom_L> or such
[23:15:22] <Tom_L> those come in tungsten shaft
[23:16:14] <Tom_L> $37
[23:16:34] <Tom_L> $39 for tungsten
[23:17:49] <andypugh> $2 is $2 well spent to bore visitors with discussion of Tungsten v Wolfram
[23:19:13] <Tom_L> $81 carbon
[23:20:39] <Tom_L> err 91 for the M3 thread
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[23:35:28] <andypugh> M4 does seem cheaper. Odd
[23:36:30] <Tom_itx> 100mm length would probably be better
[23:36:38] <Tom_itx> but i could get by with 50 i suppose
[23:37:53] <andypugh> 100mm might be annoyingly long. You might find you can only probe very small things
[23:38:25] <Tom_itx> i will likely get the 50mm 3mm ball size
[23:38:31] <andypugh> What is the spindle to table clearance on your machine?
[23:38:45] <Tom_itx> not alot
[23:39:05] <Tom_itx> i'm doing all this in hopes of a different machine eventually
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[23:40:52] <andypugh> I would say go for a 1" stylus until you get the bigger machine. Typically you will be probing the top edge anyway.
[23:41:28] <Tom_itx> i hope to make a tool touchoff too of some sort
[23:41:33] <andypugh> (depending on the clearance round the spindle, I suppose)
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[23:44:47] <jdhNC> I got my mill and my partial refund from grizzly!
[23:44:53] <Tom_itx> nice
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[23:45:04] JT-Shop_ is now known as JT-Shop
[23:45:20] <jdhNC> now, I need space, time, tooling, air conditioning, time.
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[23:56:15] <andypugh> Now _that's_ a tiny boring bar http://cgi.ebay.co.uk/50-ph-Horn-R105-1802-0-05-TN35-02-Min-Bore-Boring-Bar-/400067050738
[23:57:37] <PCW> Dont drop it...
[23:58:09] <andypugh> There are 50 included at that price. Which might last a day.
[23:58:57] <PCW> Oh i though it was special because it was so small and worth $575 each
[23:59:21] <andypugh> I actually made a holder for the ones I bought, and they are very useful. Mine bores holes down to 5mm dia and 35 long.