#linuxcnc | Logs for 2014-06-10

[00:05:11] <zeeshan> i wanna visit OZ
[00:05:14] <zeeshan> beautiful place
[02:19:28] <Deejay> moin
[08:59:59] <miss0r> First official milling order complete: http://i820.photobucket.com/albums/zz122/Garfield87/DSC_0126_zps7f51397c.jpg yay!
[09:00:54] <SpeedEvil> CNC?
[09:01:01] <SpeedEvil> Or lots of DRO
[09:01:17] <SpeedEvil> Or panto.
[09:01:53] <miss0r> CNC
[09:02:07] <miss0r> dro?
[09:02:11] <archivist> I just get a blank screen on photophukkit
[09:02:12] <SpeedEvil> Digital REadout
[09:02:32] <SpeedEvil> you have a _beeeeg_ list of x/y numbers to go between
[09:02:53] <miss0r> I did this on my CAMM-3 mill
[09:03:36] <miss0r> it did a quite nice job. The most work was painting and grinding away the surface paint
[10:03:41] <narogon> hi
[10:04:10] <narogon> How could i replace the original installed linuxcnc
[10:04:25] <narogon> installing a new version??
[10:04:54] <cradek> just run your system updates
[10:05:18] <narogon> I have been working with a rip version
[10:05:26] <narogon> that have lots of modifications
[10:05:36] <narogon> for example a Ethercat HAL component
[10:05:48] <narogon> or some changes in halui.cc to fix a problem jogging in teleop mode
[10:06:16] <narogon> i want to install my source over the original installed linuxcnc
[10:06:34] <narogon> instead of use it making rip-enviroment each time
[10:06:54] <cradek> then you should build a package and install the package
[10:07:42] <cradek> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Buildyourowndebpackages
[10:09:06] <narogon> that's what i neede
[10:09:09] <narogon> thanks!
[10:30:24] <Deejay> re
[10:31:37] <jdh> WUMF
[10:31:57] <Deejay> wumf?
[10:32:34] <jdh> hi there.
[10:32:38] <Deejay> hi jdh
[10:32:51] <jdh> how is life this fine day wherever you ar.
[10:39:55] <Deejay> it's too hot here... 28°C outside, sun is burning, its like on an oven
[10:43:58] <Deejay> but beside the heat, everything is fine. hope you too
[10:45:12] <SpeedEvil> https://www.youtube.com/watch?v=MyJILFrtb5U
[10:45:15] <SpeedEvil> Deejay:
[10:46:06] <Deejay> hrhr
[10:46:08] <Deejay> nice idea
[10:47:43] <Deejay> we had yesterday in the evening a thunderstorm with lots of wind here... whereever you look, fallen trees on the roads and so on :/
[10:50:47] <jdh> heat is good
[10:50:50] <jdh> beats the hell out of cold
[10:51:36] <jdh> 30c and humid here.
[10:56:18] <Deejay> topical?
[10:58:02] <jdh> normal spring day in coastal .nc.us
[11:04:50] <SpeedEvil> Cold you can just add clothes.
[11:04:53] <SpeedEvil> Heat - not so much
[11:07:26] <jdh> cold - you freeze to death and die.
[11:07:50] <jdh> some might consider that redundant.
[11:11:49] <SpeedEvil> Heat kills too
[11:12:41] <SpeedEvil> A ~60W electic blanket, a couple of covers, and I can be too hot in a 5C ambient.
[11:13:29] <jdh> fortunately we don't all have to like the same things.
[11:13:45] <jdh> and I am fine with others being wrong... err... cold... whatever.
[11:15:18] <_methods> i love it finally hot down here
[11:15:22] <_methods> nice and humid today
[11:19:14] <jthornton> 76% here and feels like 90%
[11:20:23] <jthornton> nap time
[11:21:09] <jdh> or time for a lunchtime walk
[11:21:36] <Tecan> http://i.imgur.com/iWhdnxO.jpg << cowasaki
[12:07:45] <IchGuckLive> hi all B)
[12:08:10] <IchGuckLive> Loetmichel: thunder around you ?
[12:31:23] <Loetmichel> no
[12:31:34] <Loetmichel> @ IchGuckLive
[12:33:38] <IchGuckLive> i see very dark clouds coming from france our direction
[12:33:55] <ssi> anyone have any experience with slaved axes?
[12:34:20] <ssi> I'm finally getting around to getting homing working on my plasma table, and I'm not sure how that's going to work with the way the axis is slaved currently
[12:37:09] <IchGuckLive> ssi you mean gantry
[12:37:22] <IchGuckLive> i use only one switch on my plasmas
[12:37:49] <IchGuckLive> is there enoph room to move about 5mm gantry oposit
[12:37:51] <JT-Shop> ssi, steppers or servos?
[12:38:13] * Loetmichel just spent 355 eur for a reprap prusa I3 mechanics kit. i wanted to design that myself, but i know myself to well: the Electronics and steppers are here since 2012... and would still be on the shelf when i retire...
[12:38:15] <Loetmichel> ;-)
[12:39:31] <jdh> ever notice how quiet 3d guys get when you ask how many prints they throw away to get the one key fob they are showing you?
[12:39:54] <IchGuckLive> Loetmichel: http://www.komforthaus.com/3D-Printer-CNC this is in a walk hr here
[12:40:32] <Loetmichel> IchGuckLive: who cares?
[12:40:42] <IchGuckLive> they print on about 120 mashines it is weat to move into the room with all this axis moving
[12:40:56] <IchGuckLive> Loetmichel: look at the component kits
[12:41:43] <Loetmichel> IchGuckLive: again: who cares? its to late already, i have ordered the kit. so stop pointig me to sites where i could have got that "cheaper oder better or wahtever"
[12:41:54] <IchGuckLive> ssi: ? please answer our questions for better help
[12:42:24] <IchGuckLive> ah so you are in the mood of getting printing within 24hr
[12:42:37] <Loetmichel> jdh: i will experience that soon ;)
[12:42:52] <IchGuckLive> good luck
[12:43:12] <jdh> should be fun anyway
[12:43:17] <IchGuckLive> i prefer still 3D printing externaly with hightec printers like fabberhouse
[12:43:34] <Loetmichel> IchGuckLive: you constant highliting me is getting somewhat on my nerves, to be honest.
[12:43:37] <IchGuckLive> at 45cent per cm³
[12:44:08] <IchGuckLive> michel it will end soon im of on 30Aug forever here
[12:44:21] <Loetmichel> thank god
[12:45:44] <IchGuckLive> bet you will not b the onlyone who dont miss me
[12:51:02] <jdh> what highlighting
[12:54:46] <Loetmichel> jdh: the one he does EVERY time he comes on... asking me hoiw the weather is or such irrelevant stuff
[12:55:38] <zeeshan-laptop> Loetmichel: how is the weather
[12:56:04] <zeeshan-laptop> :)
[13:06:49] <ssi> sorry, got work'd
[13:07:09] <ssi> it's a stepper machine, and I'm using a G540 with a 5i25
[13:07:24] <ssi> right now I just have one stepgen feeding both Y and A outputs for the gantry
[13:07:37] <CaptHindsight> jdh: 0 prints would be my answer
[13:08:07] <ssi> I'd like to set it up so Y and A home independently, and I need to figure out what the best way is to make sure it stays square
[13:08:18] <ssi> but with one stepgen feeding both outputs, I dont think I can do that
[13:09:06] <IchGuckLive> you are wright no way
[13:09:22] <IchGuckLive> you need 2 stepgen to move individuel
[13:09:29] <ssi> right
[13:09:36] <ssi> but then I'm not sure how to slave them together exactly
[13:10:42] <IchGuckLive> it the hal that makes the trick do y<ou use triv skins or gantry i guess triv as it is koppelt
[13:10:49] <ssi> I think it's trivkins
[13:10:59] <ssi> lemme find the ip so I can log into the box and look at the hal
[13:12:47] <IchGuckLive> JT-Shop: its your turn i never seen a G540
[13:13:13] <ssi> yeah definitely trivkins
[13:13:23] <ssi> there's nothing magical about the G540... it's just four stepper drivers
[13:13:35] <CaptHindsight> http://www.ebay.com/itm/250mm-150mm-100mm-Ball-Industrial-CNC-Slide-Rail-Guide-Syetem-1605-Mill-X-Y-Z-/261496389569 today's mystery mill
[13:13:59] <ssi> and right now I'm doing it like this:
[13:14:00] <ssi> net emcmot.01.pos-cmd => hm2_5i25.0.stepgen.01.position-cmd
[13:14:00] <ssi> net emcmot.01.pos-cmd => hm2_5i25.0.stepgen.03.position-cmd
[13:14:30] <ssi> axis 01 (y) feeds both 01 and 03 on the 5i25/g540, which corresponds to the Y and A drives
[13:16:02] <ssi> I guess I need to look into gantrykins
[13:16:53] <IchGuckLive> ssi there is trick as you make a XYZV mashine and home this at min Homeswitch distance and then you are in real good POS for the real XYZ no Gantry
[13:17:42] <ssi> I don't follow
[13:18:04] <ssi> hm: "Homing always happens in joint mode (aka Free mode). The two joints of a gantry’s axis must be homed together, so they must have the same [AXIS_n]HOME_SEQUENCE in the .ini file.
[13:18:24] <ssi> I only have one limit input right now, and they're all NC in series. I wonder if that'll be a problem for homing the gantry axes together
[13:19:12] <zeeshan-laptop> hey guys
[13:19:21] <zeeshan-laptop> im looking for an industrial duty
[13:19:23] <zeeshan-laptop> 1000psi water pump
[13:19:27] <zeeshan-laptop> low flow rate.
[13:19:36] <zeeshan-laptop> any suggestions>
[13:27:25] <jymmm> FSCK ME... 7/8" snake ran 165ft FINALLY cleared the drain *sigh*
[13:28:10] <Loetmichel> hmm, was thet even on your property?
[13:29:34] <skunkworks> sounds like drain tile...
[13:30:42] <jymmm> Property is 110ft long (per assesors map) to curb, exlding going thru roof vent (add 15ft), plus bends, traps, etc. plus curb to main which I *think* is about another 30ft, unless it's across the street which would be 2 lanes plus enter median plus whatever.
[13:30:44] <IchGuckLive> im off its getting realy bad here with thunderstorms BYE
[13:31:09] <zeeshan-laptop> jymmm: stop pooping big poops
[13:31:12] <zeeshan-laptop> and clogging your drain!
[13:31:41] <zeeshan-laptop> 165 ft is a long distance
[13:32:03] <jymmm> skunkworks: It could be, theres a nasty sycamore tree at the curb that has been tearing up the concrete driveway and sidewalk lifiting slabs by at least 6" for a few years.
[13:32:52] <skunkworks> they didn't run a camera down?
[13:32:56] <jymmm> Last night he ran it out 110ft and still didn't clear it, had to come back this morning for the added 55ft
[13:33:17] <jymmm> skunkworks: His camera was broken
[13:33:26] <skunkworks> aww
[13:33:40] <CaptHindsight> zeeshan-laptop: http://www.ebay.com/itm/331200954100 like this or with a motor?
[13:34:05] <zeeshan-laptop> with a motor would be nice
[13:34:24] <zeeshan-laptop> are you sure i can use water with a hydraulic pump>
[13:34:30] <zeeshan-laptop> water isnt as viscous
[13:34:54] <jdh> use blood
[13:35:17] <CaptHindsight> just think of the circulation
[13:35:18] <zeeshan-laptop> jdh be quiet troll
[13:35:21] <zeeshan-laptop> work on the lathe
[13:35:27] <zeeshan-laptop> mine is almost done
[13:35:32] <jdh> it's dive season, not lathe season.
[13:35:34] <zeeshan-laptop> and you started before me!
[13:36:36] <zeeshan-laptop> CaptHindsight: that pump actually looks nice..
[13:36:40] <jdh> I'm taking off Jun 12-22!
[13:37:13] <zeeshan-laptop> all i need is a 1725 rpm motor
[13:37:17] <zeeshan-laptop> and it should be good to go
[13:37:34] <jdh> take one out of your washer
[13:37:43] <CaptHindsight> zeeshan-laptop: I have one myself
[13:37:47] <Loetmichel> any hydraulic pump CAN pump water just fine.
[13:37:58] <Loetmichel> its just a question of "how long"
[13:37:59] <skunkworks> wow
[13:38:06] <zeeshan-laptop> Loetmichel: yea and itll rust to shit!
[13:38:08] <skunkworks> maybe for a little while...
[13:38:09] <Loetmichel> because awater does not grease the parts
[13:38:39] <Loetmichel> zeeshan: it will not rust
[13:38:39] <CaptHindsight> zeeshan-laptop: this for a coolant pump?
[13:38:43] <Loetmichel> it will destroy itseld
[13:38:45] <Loetmichel> f
[13:42:36] <CaptHindsight> http://www.ebay.com/itm/Pressure-Washer-Replacement-Horizontal-Pump-/250455676993
[13:43:20] <CaptHindsight> http://www.ebay.com/itm/3000-PSI-Axial-Pressure-Washer-Pump/321244101862
[13:44:58] <kengu> i think a 6040 cnc could be ok.. an alternative to shapeoko
[13:45:31] <Loetmichel> kengu: in my opinion a 604 is the lowest useable rigity there is
[13:45:49] <Loetmichel> a shapeoko is more for pltting someting or milling stryrofoam
[13:45:58] <Loetmichel> but that is just my opinion
[13:45:58] <CaptHindsight> out of the box all those cheap mills from China need work to get the lash out and get them square
[13:46:24] <Loetmichel> CaptHindsight: square: yes. lash: no, the 604 have ballscrews
[13:46:26] <Loetmichel> 6040
[13:46:47] <Loetmichel> but the motor couplings need some thinking
[13:47:14] <CaptHindsight> many don't even fix the bearings properly
[13:47:16] <kengu> I have never seen on in-person
[13:47:21] <kengu> +e
[13:47:28] <Loetmichel> that happened to mine after half a year of work: http://www.cyrom.org/palbum/main.php?g2_itemId=14193
[13:47:33] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=14196
[13:47:57] <kfoltman> Loetmichel: heh, nice
[13:48:14] <kfoltman> is that a cheap made-in-China coupling, or something more pricey?
[13:48:28] <Loetmichel> now its 1.5 years in use and all three couplings have been replaced ;)
[13:48:29] <kengu> I think I have something like 2000€ for the project, so a 1200€ for the "base" and then still some for the tweaks
[13:48:43] <Loetmichel> thats the original coupling that came with the 6040
[13:48:55] <kfoltman> kengu: for what size?
[13:49:03] <kfoltman> Loetmichel: ah, ok
[13:49:33] <Loetmichel> i should stat the the 604 is in use in a company
[13:49:39] <Loetmichel> more or less 8 hrs a workday
[13:49:54] <Loetmichel> so that may not happen to a hobby used one that fast
[13:49:59] <Loetmichel> 6040
[13:50:02] <kengu> kfoltman: 6040 as stated or what are you asking
[13:50:11] <CaptHindsight> anyone found a good coolant sump pump for small lathe size applications?
[13:54:15] <CaptHindsight> http://www.ebay.com/itm/Free-shipping-6040-engraving-machine-rack-suitable-for-CNC-6040-CNC-router-/201071049213 this one features nuts on the ballscrews for setting preload
[13:55:53] <CaptHindsight> some ship without them with the ballscrew cut short so you can't add them without having to machine and add an extension
[13:56:09] <kengu> it is interesting how the price is close to the same from china and from uk on those on ebay as there should be some taxes added on the price of the uk one
[13:56:13] <CaptHindsight> or you have to shim them into place
[13:58:22] <CaptHindsight> I find used ballscrew positioners all the time that would work far better and cost less than those
[13:58:30] <zeeshan-laptop> CaptHindsight: youre a master ebayer
[13:58:43] <zeeshan-laptop> CaptHindsight: no its not for a coolant pump
[13:58:49] <zeeshan-laptop> its for a hydroformer
[13:58:58] <zeeshan-laptop> that needs about 500psi to deform 1000 series aluminum
[13:59:11] <jymmm> When you have low tolernce over something you are being... crast?
[13:59:16] <ssi> what's the dimensions of that 6040 machine
[13:59:23] <zeeshan-laptop> thats why im looking for an industrial duty pump
[13:59:26] <zeeshan-laptop> that wont rust itself
[13:59:34] <zeeshan-laptop> and piss water everywhere :D
[13:59:44] <jdh> working space is like 580x380
[14:01:31] <jdh> I keep almost buying this one: http://tinyurl.com/lj88eec
[14:01:39] <CaptHindsight> http://www.ebay.com/itm/Mikro-Precision-MS-45-25-PMD050-Crossed-Roller-Slide-Size-23-Motor-Mount/330927753799 great for a Z
[14:02:19] <ssi> so here's an engraving question
[14:02:31] <ssi> it seems like leveling your workpiece is INSANELY CRITICAL for engraving
[14:02:37] <_methods> hahah
[14:02:37] <ssi> how do you get it level enough for even engraving?
[14:02:41] <jdh> unless you have a floating head
[14:02:51] <_methods> leveling is important for all things lol
[14:03:07] <ssi> floating head eh?
[14:03:23] <_methods> they make spring loaded engraving bits
[14:03:30] <ssi> I see
[14:03:50] <ssi> I have a little ghetto engraving machine I built out of some pre-made slides
[14:04:06] <_methods> http://www.2linc.com/engraving.htm
[14:04:41] <Loetmichel> ssi:simpla take alight cut off your sacificial plate before gluing the piece to engrave to the sP
[14:04:58] <Loetmichel> ... and beg for a even thincknes of the material to engrave
[14:05:12] <ssi> unfortunately that won't work for my application :/
[14:05:32] <Loetmichel> because?
[14:06:04] <ssi> because a) the machine isn't really up to the task of flattening its table, and b) the parts that I need to engrave aren't flat things that get glued down
[14:06:16] <ssi> they're things like gun receivers
[14:06:56] <Loetmichel> so you have to moint the reciver in a vice
[14:07:31] <CaptHindsight> http://www.ebay.com/itm/C107829-Motorized-Ball-Screw-Linear-Positioner-w-Vexta-5-Phase-Motor-Driver-/390808262302
[14:07:34] <Loetmichel> and then use the engraving bit and a piece of paper to drive to all 4 corners and aling it by hammering it softly until the paper sutcks on all 4 corners
[14:07:40] <Loetmichel> stucks
[14:08:45] <Loetmichel> or you could make a "platform" that fits the underside of the recicer so out falls in already levelled
[14:08:57] <Loetmichel> s/out/it
[14:12:54] <zeeshan-laptop> finally my frigging power supply has been shipped
[14:13:40] <jdh> I use a gauge pin
[14:14:12] * JT-Shop uses a gauge pin too
[14:14:28] <zeeshan-laptop> i need a gauge pin set
[14:14:29] <zeeshan-laptop> ;[
[14:14:36] <jdh> JT: been biking?
[14:16:23] <JT-Shop> once in the last few weeks, too much rain and the trail is muddy
[14:17:52] <ssi> hm I think I have a 7i43 lying around.. I could probably press that into service as extra IO for the plasma table
[14:18:09] <CaptHindsight> http://www.ebay.com/itm/thomson-superslide-linear-motion-slide-2DB-12-OUB-B-L32-CNC-29-new-in-box-/191200426838 and it's NEW!
[14:18:11] <jdh> I bought a new road bike instead of a 6040
[14:19:01] <SpeedEvil> Silly person. Buy tools, make road bike!
[14:19:47] <CaptHindsight> http://i.ebayimg.com/00/s/MTYwMFgxMTYy/z/2YYAAMXQh8NTcof6/$_57.JPG ^^ specs on the positioner
[14:19:56] <jdh> (and I meant a real floating head for engraving, not a spring-loaded tool)
[14:20:23] <JT-Shop> jdh, what did you get?
[14:20:36] <jdh> specialized roubaix
[14:21:06] <JT-Shop> nice, my buddy rides specialized
[14:21:20] <CaptHindsight> http://i.ebayimg.com/00/s/MTYwMFgxMTYy/z/JiMAAOxyIPNTcof-/$_57.JPG
[14:21:29] <jdh> I did 100km+ saturday and now have some severe sciatic pain
[14:22:00] <JT-Shop> that one all carbon fiber?
[14:22:05] <jdh> yeah
[14:22:14] <jdh> it's beautiful
[14:22:42] <JT-Shop> they are proud of them for sure
[14:22:57] <jdh> uh huh... and the only shop here does full retail.
[14:23:09] <JT-Shop> ouch
[14:23:41] <JT-Shop> just don't hit a dog with one... I've seen what a carbon frame does when you hit a dog and it ain't pretty
[14:24:02] <jdh> wonder if my homeowners insurance would cover that.
[14:24:30] <JT-Shop> bbl
[14:25:05] <CaptHindsight> zeeshan: when the stepper in the IACV shorts it does this to the ECU's http://oi39.tinypic.com/xofndu.jpg
[14:25:41] <zeeshan-laptop> tasty
[14:25:43] <zeeshan-laptop> id eat it
[14:26:31] <jdh> I hooked up a stepper to a compumoter drive this morning for testing and one of the leads wasn't screwed in tight. I hit the wires and it started arcing everywhere.
[14:26:45] <jdh> motor and drive are fine though
[14:30:07] <Loetmichel> jdh: ouch
[14:30:37] * skunkworks loves parker drives...
[14:31:01] <Loetmichel> i once killed a simeens micromaster
[14:31:33] <Loetmichel> by dialing a normal 3 phase ac motor up to 400Hz... and then hit the emergency stop
[14:31:55] <skunkworks> robEllenberg
[14:31:57] <Loetmichel> i could read "OV" VERY shrot, then a series of loud bangs.
[14:32:05] <skunkworks> heh
[14:32:24] <ssi> probably not a drive you'd want to use in the long run anyway :D
[14:32:27] <skunkworks> https://www.youtube.com/watch?v=HPzow8L1dxw
[14:32:27] <Loetmichel> all igbt modules molten, lots of arc residue on the controller board inside
[14:32:33] <CaptHindsight> the Parker servo motors and drives always work well until you drop them on the encoder :)
[14:34:21] <zeeshan-laptop> http://i.imgur.com/4g1npjv.jpg
[14:34:30] <zeeshan-laptop> my baby
[14:34:51] <zeeshan-laptop> lol @ crt monitor
[14:35:31] <CaptHindsight> zeeshan-laptop: is the the flex tester?
[14:35:50] <zeeshan-laptop> its just a press
[14:35:53] <zeeshan-laptop> but servo hydraulic controlled
[14:35:57] <zeeshan-laptop> and move at 240ipm
[14:36:05] <zeeshan-laptop> @ 150 tons
[14:36:22] <zeeshan-laptop> we do different forming tests on it
[14:36:28] <CaptHindsight> good for cracking open bowling balls
[14:36:34] <zeeshan-laptop> hahah
[14:36:55] <zeeshan-laptop> http://i.imgur.com/75MdaCr.jpg
[14:37:01] <zeeshan-laptop> some pretty standard tensile testers
[14:37:03] <zeeshan-laptop> ones heated
[14:37:25] <zeeshan-laptop> my favourite is this one
[14:37:26] <zeeshan-laptop> http://i.imgur.com/C9FDVXl.jpg
[14:37:46] <zeeshan-laptop> then oven goes to 1800F
[14:38:42] <CaptHindsight> zeeshan-laptop: what materials are you going to test?
[14:38:52] <zeeshan-laptop> mostly magnesium
[14:39:05] <zeeshan-laptop> and shape memory polymer + metal substrate laminates
[14:39:12] <zeeshan-laptop> http://i.imgur.com/WfDTdjW.jpg
[14:39:17] <zeeshan-laptop> thats the bulge tester i need a water pump for
[14:39:29] <CaptHindsight> electroactive polymers?
[14:39:43] <zeeshan-laptop> no
[14:39:51] <CaptHindsight> just memory
[14:39:56] <zeeshan-laptop> yessir
[14:40:06] <zeeshan-laptop> they can go back to their 'fixed state' by various methods
[14:40:13] <zeeshan-laptop> but the one im investigating is thermal
[14:40:26] <zeeshan-laptop> some fancy ones go back to their original shape using a magnetic field
[14:41:01] <zeeshan-laptop> i have to relearn chemistry
[14:41:05] <zeeshan-laptop> all this polymer talk.
[14:41:19] <zeeshan-laptop> chemists are notorious for using big words for everything, its kind of sad
[14:41:41] <CaptHindsight> plus it's a whole branch that's not really covered in chem
[14:42:03] <jdh> polymer is the same size word as monomer
[14:42:20] <CaptHindsight> monomer, oligomer, polymer
[14:42:55] <zeeshan-laptop> i dont mind the terminology
[14:42:58] <CaptHindsight> should really be called mer chemistry :)
[14:43:02] <zeeshan-laptop> but when they start using words like 'rheological'
[14:43:10] <zeeshan-laptop> i get pissed off
[14:44:25] <CaptHindsight> just replace that with flow qualities
[14:44:31] <zeeshan-laptop> exactly man
[14:45:17] <zeeshan-laptop> can you imagine saying
[14:45:28] <zeeshan-laptop> 'water behaves in a rheological manner'
[14:45:32] <zeeshan-laptop> instead of 'water flows'
[14:45:33] <zeeshan-laptop> haha
[14:45:36] <CaptHindsight> what qualities do you need for your shape memory polymer?
[14:45:39] <zeeshan-laptop> frigging chemists
[14:46:26] <zeeshan-laptop> CaptHindsight: the idea is to take a laminate sheet of this stuff and throw it in an industrial press that manufacturing facilities have
[14:46:30] <zeeshan-laptop> and get a formed part.
[14:46:48] <zeeshan-laptop> its quiet hard to do when its a laminate because you have a metal that deforms in a certain manner
[14:47:03] <zeeshan-laptop> a polymer that is viscoelastic
[14:47:16] <zeeshan-laptop> and then an adhesive layer that is getting raped by the interface stress
[14:47:45] <zeeshan-laptop> so basically the quality that it needs is that it comes out in 1 piece
[14:47:56] <zeeshan-laptop> without wrinkling (huge problem) and relaxation issues
[14:47:58] <CaptHindsight> formed laminates, what overall thickness? and just of the polymers?
[14:48:35] <CaptHindsight> I see whats happenin
[14:48:36] <zeeshan-laptop> the ss304 sheet is .6mm and the laminate sheet is 125-250 micron
[14:48:55] <zeeshan-laptop> i think the problem is this..
[14:49:05] <zeeshan-laptop> we're trying to cup draw it, when we should be trying to deep draw it
[14:49:20] <zeeshan-laptop> you wanna keep the punch pressure equivalent to the clamp pressure so the material flows
[14:49:23] <zeeshan-laptop> rather than stretches
[14:49:46] <zeeshan-laptop> its when it stretches there is residual stress build up
[14:50:01] <zeeshan-laptop> (due to the differences in stretching between the polymer and sheet metal)
[14:50:07] <CaptHindsight> and keep the creamy polymer middle from oozing out the sides
[14:50:17] <zeeshan-laptop> hehe
[14:50:29] <zeeshan-laptop> dude, the phd student before me did a couple of tests on another type of smp
[14:50:34] * SpeedEvil wonders about hydroforming
[14:50:37] <zeeshan-laptop> they found a way to make the process work
[14:50:55] <zeeshan-laptop> but they came back after 2 months and the samples were wrinkled, even though they were instaneously wrinkled during the forming process
[14:51:00] <zeeshan-laptop> the polymer relaxes
[14:51:05] <zeeshan-laptop> over a long period of time
[14:51:23] <zeeshan-laptop> SpeedEvil: hydroforming works by stretching also
[14:51:23] <SpeedEvil> Anneal?
[14:51:35] <zeeshan-laptop> SpeedEvil: the metal wasnt moving
[14:51:38] <zeeshan-laptop> the poylmer moved
[14:51:43] <SpeedEvil> I mean anneal the polymer
[14:52:11] <zeeshan-laptop> SpeedEvil: might be one thing to try out
[14:52:29] <zeeshan-laptop> i need to learn more chemistry so i can understand how smps work
[14:53:26] <CaptHindsight> whats the size of the parts?
[14:53:45] <zeeshan-laptop> CaptHindsight: right now im forming 5" round discs
[14:53:59] <zeeshan-laptop> standardized testing
[14:54:19] <zeeshan-laptop> and using a 3d camera system to measure the strains in order to classify the behaviour
[14:54:27] <CaptHindsight> and they want to do this is one step vs form the metal and then laminate?
[14:54:43] <zeeshan-laptop> CaptHindsight: yes, the sheets will come prelaminated
[14:54:58] <zeeshan-laptop> laminating after forming is a bit easier
[14:55:20] <zeeshan-laptop> but its also time consuming
[14:55:30] <zeeshan-laptop> and prolly requires additional machines
[14:55:50] <CaptHindsight> are the edges of the parts sealed?
[14:55:58] <zeeshan-laptop> i have 2 years to come up with something :D
[14:56:47] <zeeshan-laptop> ill try to take a picture of it on thursday when im in the office, not in the lab
[14:56:54] <zeeshan-laptop> i have a couple of samples
[14:57:03] <zeeshan-laptop> its easier just to show it
[14:58:11] <CaptHindsight> can you mold the two metal sides and then coat with a resin that will polymerize when you place them together?
[14:58:35] <CaptHindsight> or should i use sandwich terminology :)
[14:58:42] <zeeshan-laptop> no
[14:59:04] <zeeshan-laptop> i can;t change the original material! :P
[14:59:12] <zeeshan-laptop> i can modify the process
[14:59:18] <zeeshan-laptop> or forming parameters, or heat
[14:59:25] <zeeshan-laptop> or magnetic field or light or wahtever
[14:59:29] <zeeshan-laptop> but not the material
[14:59:31] <CaptHindsight> ah you're in a corner
[14:59:47] <zeeshan-laptop> my approach is
[14:59:56] <zeeshan-laptop> 'experiment to classify material behaviour'
[15:00:05] <zeeshan-laptop> 'hypothesize a couple of solutions'
[15:00:07] <zeeshan-laptop> 'test'
[15:00:09] <zeeshan-laptop> 'fail'
[15:00:13] <zeeshan-laptop> 'get kicked out of school'
[15:00:17] <zeeshan-laptop> :D
[15:00:59] <CaptHindsight> I make polymers, oligomers, monomers and blends is why I'm interested
[15:01:16] <zeeshan-laptop> CaptHindsight: then we cannot further talk!
[15:01:31] <zeeshan-laptop> im supposed to keep the polymer characteristics secret
[15:01:37] <zeeshan-laptop> and composition
[15:01:44] <CaptHindsight> no problem
[15:01:47] <zeeshan-laptop> =D
[15:01:58] <zeeshan-laptop> you dont work at 3M by any chance do you
[15:02:56] <CaptHindsight> nope
[15:03:27] <CaptHindsight> but I've worked with developing metal composites and laminates
[15:03:48] <zeeshan-laptop> ah cool
[15:03:57] <CaptHindsight> anodized aluminum or SS with various cores
[15:04:05] <zeeshan-laptop> maybe in the future you can help me understand some of these chemistry terms
[15:04:07] <zeeshan-laptop> :)
[15:05:22] <CaptHindsight> that how we ended up working on the image anodizing of non-planer parts that led to 3d printing/additive manufacturing/materials deposition
[15:06:01] <CaptHindsight> using Linuxcnc to control the multi-axis printers
[15:06:21] <zeeshan-laptop> ahh
[15:08:03] <zeeshan-laptop> i have to go
[15:08:08] <zeeshan-laptop> will talk later
[18:58:51] <XXCoder> CRT montior. high tec
[18:59:05] <zeeshan> yessir!
[18:59:15] <zeeshan> all that is doing is outputting data set
[18:59:19] <zeeshan> no need for fancy lcd!
[19:01:15] <XXCoder> make it vector output lol
[19:01:27] <XXCoder> get controller and convert crt lol
[19:01:55] <zeeshan> honestly i can see why theyve left it crt
[19:02:05] <zeeshan> each one of the ccd cameras is 7500$
[19:02:43] <XXCoder> I dont get the connection between those 2?
[19:02:59] <zeeshan> cause they blow all their money on stuff that matters
[19:03:13] <XXCoder> ahh lol ok
[19:03:35] <zeeshan> literally those screens are used to copy data to a main server
[19:03:48] <zeeshan> so its not even worth replacing em with aused 30$ lcd
[19:04:57] <XXCoder> lol yeah
[19:05:45] <zeeshan> im so hungry
[19:05:46] <zeeshan> =[
[19:14:17] <XXCoder> aw
[19:41:38] <mshaver> Has anyone reflashed their 5i25 to use it without a 7i76/7? I mean, make it look just like a parallel port pinout, but with hardware step pulse generation.
[19:42:27] <cradek> yep
[19:42:50] <mshaver> :) Good! How?
[19:42:56] <cradek> with the mesaflash utility
[19:43:18] <cradek> there are firmwares for step/dir and dir/step pinouts (you know how some have them one way and some have them the other) so be sure you check the pin file
[19:44:35] <mshaver> is this in the download on the mesa site, or in the "base"/all arches repository?
[19:46:16] <cradek> mesaflash is not yet in our apt repo. It oughta be, though, for 2.6. The packaging is all done, and even tested.
[19:48:11] <cradek> http://psha.org.ru/irc/%23emc-devel/2014-04-19.html
[19:48:52] <cradek> actually more useful stuff here: http://psha.org.ru/irc/%23emc-devel/2014-04-20.html
[22:20:30] <witnit> hello
[22:20:37] <XXCoder> hey
[22:21:02] <witnit> How do I know which .bit file I should be using?
[22:21:14] <witnit> I was using the just DIO, then tried sv12
[22:21:30] <XXCoder> chts been quiet for while but hopeully someone can help
[22:21:34] <witnit> one of course I could not use my servo card with,
[22:21:46] <witnit> theother was giving options for 12 servo
[22:22:14] <witnit> I need something that does 4 servo with a 7i33 and the other towo 5opin connectors just DIO
[22:22:28] <witnit> two 50 pin*
[22:23:01] <witnit> yeah, maybe pcw will turn up
[22:28:01] <skunkworks_> that is a pretty normal setup...
[22:28:14] <skunkworks_> let me see if I have my configs somewhere
[22:29:13] <witnit_> thanks!
[22:33:28] <pcw_home> SV12 or SVST8_4 should work equally well for a 4 axis servo system (the 7I33 should be on the first connector)
[22:33:54] <skunkworks_> CONFIG="firmware=hm2/5i20/SVST8_4.BIT num_encoders=3 num_pwmgens=3 num_stepgens=0"
[22:33:59] <skunkworks_> heh
[22:34:10] <witnit_> ty!
[22:34:41] <pcw_home> turn off the unused stuff and it will revert to GPIO
[22:36:44] <witnit_> so even if I used sv12 it will only use a portion
[22:37:10] <witnit_> I tried setting the other pins to outputs and it says they did not exist
[22:38:25] <pcw_home> if you specify 4 pwmgens only pwmgen 0 through 3 will be enabled
[22:38:37] <witnit_> k
[22:38:57] <pcw_home> if you dont specify pwmgens at all, they will all be enabled
[22:39:13] <witnit_> ahhhhh
[22:39:17] <witnit_> thats what I did then
[22:39:19] <pcw_home> (which is probably a mistake but too late to change)
[22:39:36] <witnit_> so close yet so far
[22:40:57] <pcw_home> The actual hardware can enable features on a pin by pin basis but the
[22:40:59] <pcw_home> driver adopts a simpler model to keep the config string manageable
[22:44:24] <pcw_home> CONFIG="num_encoders=4 num_pwmgens=4 num_stepgens=0"
[22:44:26] <pcw_home> would be appropriate if you want all 4 7I33 axis enabled
[22:48:09] <witnit_> I think I understand
[22:48:19] <witnit_> the machine is at the shop, I will test tomorrow
[23:04:01] <tjtr33> a machinekit get-together was announced on the MachineKit mail list
[23:04:04] <tjtr33> We are pleased to invite anyone interested to the first "real world"
[23:04:04] <tjtr33> Machinekit meeting, taking place on June 28/29 at the Tormach facility
[23:04:05] <tjtr33> in Madison, Wisconsin (USA).
[23:04:18] <tjtr33> fyi