#linuxcnc | Logs for 2014-05-09

[00:02:04] <skunkworks_> pcw, are you around?
[00:02:58] <PCW> Yeah
[00:05:00] <skunkworks_> so - I took the 5i20 config and set it to 5i25.. I installed the firmware (picked one that seemed to have stepgens.. dmmbob1x2
[00:05:09] <skunkworks_> I don't get anything on the step pins..
[00:05:14] <skunkworks_> dir seem to change
[00:05:29] <skunkworks_> I have to be doing something stupid
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[00:05:57] <skunkworks_> if I run the feedrate way down (scale is only 1000) I don't see step changing.
[00:07:47] <skunkworks_> From what I gather - pin 2 should be direction pin 3 should be step (for the first stepgen - x)
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[00:11:31] <PCW> Yeah that should be right (did you cycle the power after writing the new firmware?)
[00:11:45] <PCW> (or look at dmesg)
[00:11:56] <skunkworks_> yes
[00:12:06] <skunkworks_> I was looking at dmesg to figure out the pins
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[00:12:25] <skunkworks_> it didn't run initally (because no stepgens in the 5i25)
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[00:15:11] <PCW> let me duplicate that setup
[00:15:33] <XXCoder> http://theantimedia.org/3d-printer-used-to-build-housing-in-china/
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[00:16:44] <XXCoder> its not fancy but hey, a house for less tha car price.
[00:16:53] <skunkworks_> pcw, thanks
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[00:19:35] <PCW> well that config seems to work for me (at least the step I/O is where its expected and works)
[00:19:47] <skunkworks_> darn
[00:20:01] <Jymmm> XXCoder: Hell, you could backup a lo-boy, and print-on-site.
[00:20:20] <PCW> step pulses to short?
[00:20:32] <XXCoder> I wonder if one could make cnc builder. one that also does electric system and such lol
[00:20:35] <skunkworks_> oh - that could be...
[00:21:10] <Jymmm> XXCoder: You know have they have cranes that just raise up as the building is built? Like that.
[00:21:43] <PCW> you can always try quadrature mode if looking with LEDs
[00:22:08] <Jymmm> XXCoder: It has wheels on the ground, then as the walls are printed, they also serve as linear rails
[00:23:03] <Jymmm> Much like a tuck has those attachments for running on rialroad tracks
[00:23:38] <Jymmm> http://highrailequipment.com/images/hi-rail-big-8.jpg
[00:24:12] <skunkworks_> pcw, you mean I can't see a 40us pulse with the volt meter... duh
[00:24:15] <skunkworks_> thanks
[00:24:17] <skunkworks_> it is working
[00:24:46] <PCW> OK thats good
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[00:27:51] <skunkworks_> pcw, qaudature give a nice visual
[00:28:42] <PCW> yeah (the table mode does also)
[00:28:48] <XXCoder> LOL!! https://www.youtube.com/watch?v=MJlUD5yJ0tI&feature=youtu.be
[00:29:12] <skunkworks_> bbl
[00:29:41] <CaptHindsight> XXCoder: it's printed concrete, you can leave hollows for raceway
[00:29:48] <CaptHindsight> and HVAC
[00:29:54] <XXCoder> and bowling alley
[00:29:56] <XXCoder> ;)
[00:32:30] <Jymmm> XXCoder: What is that, the SW?
[00:32:40] <XXCoder> it's kerbal space program
[00:32:48] <XXCoder> you design rockets and fly em
[00:32:55] <Jymmm> lol
[00:33:03] <CaptHindsight> XXCoder: good idea, now just to get 1.3B people to take up bowling, Profit!
[00:33:04] <XXCoder> guy playing game in that video is abusing the heck out of it
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[00:36:36] <XXCoder> capt heh
[00:36:47] <XXCoder> bowling well meh for me
[00:37:03] <XXCoder> can be bit fun with friends, chatting and such. but on my own nah
[00:38:58] <Jymmm> *sigh* https://www.youtube.com/watch?v=UW2dAaKk6Ko
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[00:40:19] <XXCoder> cnc that shit
[00:41:15] <Jymmm> For me, laser it
[00:41:30] <XXCoder> I want a laser too
[00:41:54] <Jymmm> I have a laser
[00:43:29] <Jymmm> Whats funny is if you laser a large area on wood, what happens is the various veins of the grain go deeper/lighter and change in height
[00:43:55] <XXCoder> lol thats cool
[00:44:44] <Jymmm> Yeah, it's an unexpected effect, but the wood density varioies in it's interaction with the laser.
[00:45:31] <XXCoder> I suppose to get constant depth you have to make it look and compeste
[00:45:48] <Jymmm> I did some cocobolo once.... that was bad, real bad.
[00:46:23] <Jymmm> there is just so much resin in it, that the laser mostly charred the resin before efectign the wood
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[00:55:44] <jdh> ahh... jsut saw the 'finning'
[00:56:19] <Jymmm> is that a fish? a movie?
[00:56:38] <jdh> a wrong channel :)
[00:57:06] <jdh> swimming vs. scootering.
[00:57:27] <Jymmm> oh your battery powered thingy?
[00:58:11] <jdh> right. not to be confused with *your* battery powered 'thingy'
[00:58:34] <Jymmm> Well, the latter would be TMI =)
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[01:10:47] <PetefromTn_> evening..
[01:13:05] <zeeshan|2> hi
[01:14:38] <PetefromTn_> hey man wazzup
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[01:32:57] <XXCoder> any remarks on http://www.eurekamagazine.co.uk/design-engineering-products/permanent-magnet-motor-surpasses-ie4-standard/61171/
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[01:37:40] <malcom2073> Are there any significant control differences between machinekit and linuxcnc? Specifically referencing the extruder (A axis)?
[01:37:48] <malcom2073> for 3d printing I mean
[01:40:36] <Jymmm> malcom2073: You should be asking them
[01:41:07] <malcom2073> Jymmm: their website points to #linuxcnc and #linuxcnc-devel as the IRC channels of choice :P I'm also writing up a message for their mailing list though
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[01:41:36] <Jymmm> malcom2073: They are the ones that created it, you need to ask them the difference
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[01:42:28] <malcom2073> That's what I was hoping to do :)
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[02:12:42] <zmi> hello guys, can you help me with problems network in linuxcnc?
[02:13:47] <jdh> ask your real question.
[02:13:59] <jdh> but... network and cnc?
[02:14:19] <zmi> I have installed linuxcnc ubuntu
[02:14:34] <zmi> i have problem with video and network
[02:15:54] <zmi> in the channel ubuntu they say no support there because this ubuntu is different for linuxcnc
[02:18:23] <jdh> did you run the latency check from teh live-cd before installing? (not really related, just curious if the chipset is suitable anyway)
[02:18:49] <XXCoder> I should do that test. next time
[02:18:54] <zmi> i dont know much about this OS
[02:19:08] <XXCoder> does it say if latency test was good or not? or does it just state number
[02:19:20] <jdh> just the numbers
[02:19:25] <XXCoder> blah ok
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[03:05:49] <CaptHindsight> sounds like zmi has gotten it installed now but is having trouble setting up networking and video
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[06:25:42] <witnit> yeah but no sense in fixxing such things if the machine has bad latency I think is why jdh was asking him such things.
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[06:54:16] <Deejay> moin
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[07:35:05] <MrSunshine> hmm looks like 0x80808080 also is right, as it seems it doesnt care what value i3 and i4 has with that ocnfiguraion .. can be 0, and be 1 . .its still true to the statement (i0 & i1 & i2)
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[08:07:56] <archivist_herron> CaptHindsight, http://www.bbc.co.uk/news/technology-27243376
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[08:22:32] <MrSunshine> gaah i would like to reporgram this pendant to use the A axis to set tool diameter fr the /2 button on the pendant =)
[08:23:00] <MrSunshine> just put it in A mode and dial in the current tool diameter ... but sounds like alot of work :/
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[08:36:24] <MrSunshine> nah i think its to much hassle .. i will just have to know the diameter and move myself in or out before zeroing out to get the actual cutter zero
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[09:41:01] <Loetmichel> *ha* got it working! -> http://www.cyrom.org/palbum/main.php?g2_itemId=14877
[09:44:01] <Loetmichel> ... only had to make the lid 2 times to fit the bottom ;-)
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[10:10:17] <MrSunshine> oh sex on a stick!
[10:10:23] <MrSunshine> nice =)
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[11:03:25] <Loetmichel> MrHindsight:hmm?
[11:03:29] <Loetmichel> MrSunshine
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[13:36:59] <MrSunshine> LeelooMinai, i think its something dave in eevblog usaly says when its something almost pornographic :P
[13:37:40] <MrSunshine> hmm lut5 does not want to be named
[13:37:40] <MrSunshine> :/
[13:38:02] <MrSunshine> linuxcnc "crashes" when i try to do "loadrt lut5 names=somehing"
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[14:11:29] <jdh> so, I'm thinking about paying $200 for teh super custom bike fit
[14:11:32] <jdh> <urk>
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[14:18:21] <pcw_home> MrSunshine" someone on the forum had similar troubles with named lut5s (no crash but some sort of bug like variable overlap)
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[14:21:54] <jthornton> MrSunshine, http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Lut5
[14:22:03] <jthornton> additional info and calculator
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[14:30:57] <cradek> MrSunshine: can you give me more details? I'm not getting a crash when I try that in 2.5 branch/sim
[14:31:58] <Jymmm> http://linuxcnc.org/docs/html/man/man9/lut5.9.html
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[14:34:31] <Jymmm> I'm not sure what WEIGHT is meant there, but okey.
[14:35:34] <jdh> I have some extra if you need it.
[14:36:58] <Jymmm> heh, that's okey... You can save that for when/if you get a boob/butt job "Does this injected fat make my boobs looks big?"
[14:38:59] <Jymmm> jdh: If you have extra, maybe you need to stop using that scooter so much ;)
[14:40:04] <Jymmm> jdh: swi/dive the old fashion way, using your arms and legs =)
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[14:43:23] <CaptHindsight> archivist: thanks for the link, I'll have to look at the waxes again. They must have found a wax that has a fast enough phase change.
[14:46:55] <jdh> no arms involved in diving. I do swim a lot. Even scootering, I will scooter back 4,000ft, then swim.
[14:48:57] <Jymmm> jdh: You can't use your arms diving?
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[14:53:30] <jdh> it is very inefficient and not needed.
[14:54:00] <jdh> anyone using arms is someone I would avoid.
[14:54:33] <Jymmm> heh
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[14:55:39] <_methods> http://arstechnica.com/tech-policy/2014/05/web-host-gives-fcc-a-28-8kbps-slow-lane-in-net-neutrality-protest/
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[14:58:29] <Jymmm> heh
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[14:58:59] <CaptHindsight> love it
[14:59:25] <_methods> wish some of the big boys would do the same thing
[14:59:43] <_methods> throttle all .gov sites
[14:59:54] <CaptHindsight> whats often gotten the point across to someone in government is subjecting them to their own rules
[15:00:04] <_methods> yep
[15:00:12] <_methods> throttle all their ips
[15:00:33] <_methods> see what happens when capitol hill can't get streaming porn
[15:01:38] <jdh> I believe that is covered under the 8th amendment.
[15:03:02] <_methods> hehe
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[15:05:42] <Loetmichel> archivist: seen the result of the drawing from yesterday?
[15:05:44] <Loetmichel> [11:40] <Loetmichel> *ha* got it working! -> http://www.cyrom.org/palbum/main.php?g2_itemId=14877
[15:05:44] <Loetmichel> [11:43] <Loetmichel> ... only had to make the lid 2 times to fit the bottom ;-)
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[15:06:45] <jdh> do you have to debur much after cutting those?
[15:06:49] <Jymmm> http://arstechnica.com/tech-policy/2014/05/surveillance-camera-clears-woman-hit-by-police-car/
[15:07:05] <Loetmichel> just a quick "go round" with a deburring tool
[15:07:10] <Loetmichel> had deburring tool
[15:07:33] <Loetmichel> and when the mill bit hadnt cut 2kg of aluminium : not even that ;-)
[15:07:38] <Loetmichel> hand
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[15:16:23] <tjtr33> CaptHindsight, you shoulda worked with Douglas Adams http://imagebin.org/309878
[15:19:48] <CaptHindsight> :)
[15:23:53] <CaptHindsight> archivist: that display can be made for less than the cost of an LCD display
[15:28:11] <Deejay> LC display or LCD
[15:28:12] <SpeedEvil> CaptHindsight: really, really debatable.
[15:28:15] <CaptHindsight> their £1.2m grant has run out!? what were they doing spending it on parties?
[15:28:25] <SpeedEvil> CaptHindsight: It also has onerous power requirements likely
[15:29:11] <CaptHindsight> I just ran the numbers, power is not an issue
[15:29:54] <SpeedEvil> Using what data?
[15:30:31] <SpeedEvil> Also - 7" LCDs are well under $20 in bulk
[15:30:41] <pcw_home> those electrostatically driven elastomers would be lower power (assuming you could get enough motion)
[15:30:53] <CaptHindsight> Joules/per dot ate required height
[15:31:34] <CaptHindsight> it's not electrostatically driven, it phase change wax
[15:31:43] <CaptHindsight> ate/at
[15:32:01] <pcw_home> I'm not talking about the wax one
[15:32:17] <CaptHindsight> yeah, I can make a wax based display for a few $$
[15:33:00] <CaptHindsight> PCW: sorry yeah, ends up the EAP's are ~100V/um of travel
[15:34:14] <CaptHindsight> i was trying to use EAP's but they either require too high a working voltage 4-5KV or a cantilever
[15:37:20] <CaptHindsight> the wax display is mainly a pcb with a silicone film with conductive wax cells and a frame for the dot channels to expand and contract into
[15:39:42] <pcw_home> similar wax as car thermostat wax?
[15:40:11] <CaptHindsight> paraffins
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[15:41:01] <CaptHindsight> you can tweak their structure to modify the phase change
[15:42:13] <pcw_home> anyone who has cast candles knows how much paraffin shrinks
[15:43:44] <CaptHindsight> if the wax is also the heater then the pcb is even easier to make
[15:45:28] <CaptHindsight> the wax is actually a bot slow to transition but if make a large display it doesn't have to refresh as often
[15:45:35] <CaptHindsight> bot/bit
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[15:46:34] <CaptHindsight> I wonder how many patents cover the design?
[15:47:44] <pcw_home> give up on the fishing line version?
[15:48:33] <CaptHindsight> too many moving parts for my liking, but it will work
[15:48:49] <pcw_home> seems like for that you just want a standard component (tall and skinny) that mounts to a PCB
[15:49:24] <CaptHindsight> like a Pogo pin
[15:49:33] <pcw_home> yeah
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[15:50:06] <CaptHindsight> I worked out a low cost system using pogo pins and latches that is manually triggered or rest
[15:50:20] <CaptHindsight> rest/reset
[15:51:17] <CaptHindsight> but too many moving parts, small levers, latches, pogo pins etc
[15:51:20] <Connor> CaptHindsight: Am I reading correctly.. a display screen made of wax ?
[15:51:44] <pcw_home> but a pogo pin with heater/nylon/spring/connections
[15:51:46] <CaptHindsight> was based actuator for Braille
[15:52:03] <CaptHindsight> Connor: ^
[15:58:46] <CaptHindsight> http://www.caltherm.com/_images/products/diaphragm-actuator-design.jpg same principle
[16:00:00] <CaptHindsight> http://www.youtube.com/watch?v=SmuDltaKPQQ
[16:03:21] <CaptHindsight> what would make it even more efficient is a thermal gate/switch to act as an insulator or thermal conductor that can be switched on and off
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[16:25:51] <CaptHindsight> http://www.google.com/patents/US5709740 figures, almost expired
[16:30:02] <CaptHindsight> http://www.google.nl/patents/WO1997015630A1?cl=en
[16:30:25] <tjtr33> CANduino is _not_ an Arduino Controller Area Network implementation https://labitat.dk/wiki/CANduino (do Danes really call it a 'can'? )
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[16:31:18] <CaptHindsight> it's anything goes Friday
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[16:55:15] <PetefromTn_> Afternoon folks..
[16:55:34] <PetefromTn_> How is everybody in the LinuxCNC world today LOL?
[16:57:25] <tjtr33> Hi Pete
[16:57:35] <tjtr33> a buddy wants to use reprap to make quik&dirty models of car parts before using cnc to cut metal.
[16:57:44] <tjtr33> is it practical in time & materials to ( for instance) model a caliper mount to really see interference as we turn the wheels?
[16:57:46] <tjtr33> is this a reasonable use for reprap?
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[16:58:04] <CaptHindsight> it's cheaper to make a DLP resin printer
[16:58:09] <CaptHindsight> they are also faster
[16:58:29] <tjtr33> really? i thought DLP printing was still scifi
[16:58:40] <tjtr33> any links to projects?
[16:59:04] <tjtr33> yah yah i can google it, thx for the tip
[16:59:30] <CaptHindsight> https://code.google.com/p/lemoncurry/wiki/main but go top down projection
[16:59:59] <CaptHindsight> the projector and vat are stationary only the stage moves
[17:00:48] <tjtr33> ok might use my epson and sable 2015 hacked up :)
[17:01:10] <CaptHindsight> the z-axis with stage is the only moving part
[17:01:17] <tjtr33> is it really a single axis? just Zposn++ ?
[17:01:20] <tjtr33> wow
[17:01:36] <CaptHindsight> you dunk the stage under the resin and lift it to the desired layer thickness
[17:01:47] <CaptHindsight> expose, dunk, repeat
[17:02:14] <tjtr33> oh Zposn-- :)
[17:02:41] <tjtr33> will read up thx
[17:02:53] <CaptHindsight> http://www.youtube.com/watch?v=eKk2vRysioE starts around 1:00, but use a projector vs laser and galvo
[17:04:10] <CaptHindsight> the distance between the surface of the resin and the last cured layer below sets the layer thickness
[17:04:19] * SpeedEvil wonders about e-beam selective sintering.
[17:04:25] <CaptHindsight> it works
[17:04:51] <CaptHindsight> same for e-beam deposition
[17:05:28] <CaptHindsight> most of this stuff is 10-20 years old but has been suppressed by the patent holders
[17:05:42] <CaptHindsight> if they can't have their way then nobody wins
[17:06:05] <tjtr33> oh upside down from my 1st mental image, stalactites
[17:06:12] <SpeedEvil> Oh - I know in principle it works.
[17:06:19] <SpeedEvil> I was wondering on my vacuum pump.
[17:06:24] <CaptHindsight> tjtr33: don't go with the bottom up projection
[17:06:32] <CaptHindsight> too complicated
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[17:06:58] <tjtr33> " but go top down projection" ok
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[17:07:08] <CaptHindsight> the bottom up uses a clear vat that you project the light onto from underneath
[17:07:48] <SpeedEvil> how does the stuff not stick to the base?
[17:07:54] <CaptHindsight> the issues are separating the cured part from the vat after each layer is cured
[17:08:10] <CaptHindsight> if you use top down it's not an issue
[17:08:34] <CaptHindsight> if you use bottom up then the resin acts like an adhesive
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[17:09:32] <CaptHindsight> even if there was no adhesion there is still a pressure differential so it acts like a suction cup
[17:10:16] <CaptHindsight> there are some tricks to the materials used for the clear vat bottom and how it gets separated
[17:10:54] <tjtr33> are the parts delicate? could i hold it in place to see fit & interference w/o having it crumble?
[17:10:59] <CaptHindsight> PTFE or high oxygen containing films plus tilting for example
[17:11:21] <tjtr33> i dont expect to bolt it up
[17:11:31] <CaptHindsight> tjtr33: I'm making parts that you can hit with a bat
[17:11:43] <tjtr33> this sound good
[17:11:45] <SpeedEvil> tjtr33: 3d printed stuff is generally as strong as most other non-structural plastic
[17:11:54] <SpeedEvil> Think your average toy
[17:12:08] <CaptHindsight> tjtr33: I can hook you up with the resins/photopolymers
[17:12:13] <SpeedEvil> If it's a thick section, it can be quite strong indeed
[17:12:20] <SpeedEvil> Even with PLA
[17:12:31] <tjtr33> hmmm charles prints of venus were a bit fragile ( wichita )
[17:12:47] <SpeedEvil> It depends on the material
[17:12:58] <SpeedEvil> you get everything from sand to inconel.
[17:13:07] <SpeedEvil> Inconel isn't noticably weak :)
[17:13:11] <CaptHindsight> I'm blending metal resin composites that have qualities similar to 6061
[17:13:30] <tjtr33> Capt thx, will see if my epson is strong enuf for a DLP
[17:13:45] <tjtr33> SpeedEvil, what about your vacuum?
[17:14:12] <CaptHindsight> yeah no problem, I even blend for sensitivity into the Blue 470nm
[17:14:45] <SpeedEvil> tjtr33: I have a vacuum pump that's basically adequate to evacuate a chamber well enough for e-beam sintering
[17:14:49] <CaptHindsight> tjtr33: you can use the epson as is, it might even be an LCD vs DLP
[17:14:59] <SpeedEvil> CaptHindsight: err - metal composites light set?
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[17:15:49] <CaptHindsight> SpeedEvil: yeah, metals, ceramics, carbon fiber, CNT's etc etc
[17:16:13] <SpeedEvil> Nontransparent composite seems to have issues :)
[17:16:35] <SpeedEvil> Unless you're using a transparent matrix and sufficiently low fill fraction/depth that it can get round the edges by internal refraction
[17:17:38] <SpeedEvil> Saw a rather insane method to grow nanotubes on CF
[17:18:38] <CaptHindsight> http://www.3ders.org/articles/20140415-ecn-uses-new-dlp-technology-for-3d-printing-metals.html
[17:18:49] <CaptHindsight> it's not new
[17:18:58] <SpeedEvil> https://connect.arc.nasa.gov/p7qyuvlzby8/
[17:19:31] <SpeedEvil> - Take CF cloth, rinse in acetone to remove sizing, dry, dip in ferrocene, dry, microwave for 45 seconds
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[17:19:58] <SpeedEvil> you get nanotubes at right angles to the CF fibres
[17:20:01] <IchGuckLive> hi all
[17:20:22] <CaptHindsight> man that site took forever to load
[17:21:30] <SpeedEvil> err - wrong link
[17:22:29] <CaptHindsight> slurry impregnated CMC is also interesting
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[17:23:11] <SpeedEvil> indeed
[17:23:30] <SpeedEvil> http://nari.arc.nasa.gov/seedling2014 - a hell of a lot of interesting stuff in the LEARN program
[17:24:10] <CaptHindsight> new piezo fuel injectors arrived yesterday, time to make some mods
[17:24:22] <tjtr33> Panasonic EMP-1705 is TFT active matrix XGA 1024x768x3, 170W UHE bulb
[17:24:53] <SpeedEvil> http://nari.arc.nasa.gov/learnseminar2013 - it was the 'poptube' link
[17:25:00] <tjtr33> CaptHindsight, maybe i can help modding the nozzles ( my edm has 4 axis now but generator stilld ead )
[17:29:10] <CaptHindsight> tjtr33: do you have one of the micro graphite cantilever tips?
[17:30:02] <CaptHindsight> oh that's another project we talked about last year since we can fabricate sub-micron graphite tips
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[17:32:37] <tjtr33> i grind subgate electrodes for mold runner systems, the tip itself passes thru the part, so it's pointyness is usually unimportant ( and has 0 dia theoretically )
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[17:33:36] <tjtr33> sometimes graphite is not the material to use , maybe copper tungsten ( use it slower but many more times )
[17:33:51] <tjtr33> lemmeno
[17:35:27] <tjtr33> i've done openings .001 on long axis and .0008 on short axis ( cone intersect plane )
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[17:43:09] <CaptHindsight> tjtr33: whatever you do don't remove the color wheel if its a DLP, too much risk and not needed
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[17:48:00] <tjtr33> i think its 3 layers TFT from the '1024x768x3' description,
[17:48:00] <tjtr33> i think 170W UHE bulb just shines thru it to the optics, but i havent cracked the case
[17:51:49] <tjtr33> http://www.projectorcentral.com/Epson-EMP-1705.htm 1700 lumens 'Display: Type: 0.7" 3 LCD'
[17:52:09] <tjtr33> a school downstate sold off a pile of 'em cheap
[17:55:45] <MrSunshine> cradek, nah sorry, dont know what version of emc im on on the cnc computer but i dit "loadrt lut5 names=all_homed" and getting a crash of some kind about "named"
[17:56:26] <MrSunshine> jthornton, yeah found the calculator yesterday =) been using it =) great to be able to write in understandable way =)
[17:57:03] <CaptHindsight> tjtr33: that will work, don't open it
[17:58:33] <MrSunshine> cradek, i can check version etc tomorrow =)
[17:58:54] <tjtr33> CaptHindsight, :) good advise, and easy enuf for me to follow light goes thru 3 'scrims' http://www.3lcd.com/explore/
[17:59:18] <MrSunshine> (the crash i call it is that i get a debug window from linuxcnc .. i guess i could copy that also if i can reproduce the problem tomorrow =)
[17:59:30] <CaptHindsight> you'll just be using the Blue and maybe the RED for alignment and focus
[17:59:41] <CaptHindsight> the RED doesn't trigger polymerization
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[18:00:20] <MrSunshine> got the =0 button working today so it cannot try and call mdi command when one axis is not homed atleast! =)
[18:00:21] <CaptHindsight> so you can display alignment patterns with Red and then polymerize with Blue
[18:00:28] <MrSunshine> all by myself .. with some help from my friends ;P
[18:03:56] <tjtr33> CaptHindsight, red for fiducial marks, cool, now i imagine something _like_ Slic3r being told to output blue only [lots to read up on]
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[18:05:34] <CaptHindsight> or white, anything so you get 100% blue
[18:06:43] <CaptHindsight> http://imagebin.org/309915 injector nozzles
[18:08:32] <IchGuckLive> Loetmichel: flashligt has arrived after 28 days
[18:09:02] <CaptHindsight> http://imagebin.org/309916 so around ~100um dia stock
[18:09:18] <CaptHindsight> nice round holes!
[18:10:25] <tjtr33> CaptHindsight, round at .004" usually requires a rotobare ( tm) but depth to dia ratio is the problem, so how deep?
[18:10:39] <tjtr33> Rotobore
[18:12:30] <CaptHindsight> depends on material and pressure, these piezo units can deliver 2000 bar, that would allow you to inject right though skin nearly into bone
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[18:14:05] <CaptHindsight> I just need to move nanogram-picogram drops at 10m/sec
[18:14:17] <tjtr33> i meant how thick is the plate that the hole passes thru
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[18:15:22] <CaptHindsight> haven't decided yet, depends on if I make a whole nozzle tip like the factory or mod these and just make a new tip
[18:16:06] <CaptHindsight> for inkjet 25um holes a 25-50um SS plate is enough
[18:17:36] <CaptHindsight> it should be at least a few hundred micron thick to give them durability or it's like trying to keep a foil from getting damaged
[18:18:03] <tjtr33> oh good, cuz 100x dia to depth is crazy hard to do, you're talking 1:1 worst case, DIY ECM may do it ( salt water & a dc supply )
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[18:19:20] <CaptHindsight> oh, thats just the low/small end of things, I'll also have 100-200um holes in 200um SS
[18:20:10] <CaptHindsight> I can also print nozzles with 25um holes
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[18:21:02] <CaptHindsight> another option is 25um holes in 25um foil and then stack them 10-20x
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[18:33:53] <PetefromTn_> Woo Hoo...UPS man just dropped off a package!! LOL
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[18:36:55] <PetefromTn_> Awesome just got my brand new Kurt vise...It even SMELLS accurate LOL
[18:38:28] <CaptHindsight> will you be posting vise pron pics next? :)
[18:42:43] <PetefromTn_> Do you need some LOL I can help ya out there man...
[18:43:00] <Tom_itx> 6 or 8" ?
[18:43:14] <PetefromTn_> 6" D 688
[18:43:22] <Tom_itx> standard issue
[18:43:30] <PetefromTn_> yup
[18:43:31] <CaptHindsight> how much was the shipping? whats the weight ~80lbs?
[18:43:40] <PetefromTn_> The goto vise for machine shops..
[18:44:07] <PetefromTn_> I got the vise brand new shipped to my door for $504.00
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[18:47:47] <PetefromTn_> I like this little sheet plate that keeps chips out of the screw it comes with.
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[19:01:01] <MrSunshine> hmm now im in a bit of a dilema :P
[19:01:28] <MrSunshine> ive edited my configs etc s much so i cannot run step config anymore ... and i need to add a Z home and limit switch .. but only for one direction of limit
[19:01:53] <MrSunshine> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Homing_And_Limit_Switch
[19:01:53] <MrSunshine> ahh
[19:05:04] <CaptHindsight> http://www.kurtworkholding.com/manual-vise-opening-p-2884-l-en.html $469.60 USD SCRATCH AND DENT
[19:08:09] <tjtr33> i got a schmidt but grinding vises are different beasts https://www.hschmidt.com/productcart/pc/Precision-Grinding-Vise-4-Capacity-VO-4-15p213.htm
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[19:18:15] <CaptHindsight> http://www3.menards.com/main/tools-hardware/power-tools/drill-presses/4-drill-press-vise/p-1682503-c-10086.htm so you're saying that I got ripped off for $40 when I got this instead?
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[19:26:43] <tjtr33> heh not if you're a carpenter or plumber
[19:27:13] <tjtr33> great trades, no offense, but a different scale fer sure
[19:32:11] <Connor> PetefromTn_: You didn't get a CNC style vise ?
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[20:06:57] <deMimsy> How would one get g-code parameter values using python commnands?
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[20:23:53] <tom_83> Hi
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[20:24:33] <tom_83> I'm trying to write my first G code program, and my brain hurts
[20:25:00] <tom_83> If T1 is a 6mm end mill and I do this:
[20:25:04] <tom_83> G21
[20:25:06] <tom_83> G40
[20:25:12] <tom_83> T1M6
[20:25:19] <tom_83> G1 X30 F500
[20:25:32] <tom_83> G42 G1 X0 F500
[20:25:46] <tom_83> then what will me DRO read?
[20:25:59] <tom_83> (assuming is read 0,0,0 before I started
[20:27:44] <_methods> x0 i guess your program is kinda.......whack
[20:28:00] <_methods> probably will error out on that comp move
[20:28:41] <CaptHindsight> tjtr33: I have to redesign these for my applications http://imagebin.org/309935 down the nozzel where the pintle sits, http://imagebin.org/309936
[20:29:00] <_methods> but i guess if you have nothing in comp for the tool it will just ignore it
[20:29:10] <tom_83> it reads X1.243 Y3
[20:29:30] <_methods> is there a value in comp for that tool?
[20:29:35] <tom_83> just a sec
[20:30:02] <tom_83> the only thing in the tool table is X and dia
[20:30:07] <tom_83> sorry, Z and dia
[20:30:09] <_methods> and by DRO do you mean the axis DRO screen or do you mean a separate dro attahced to it
[20:30:29] <tom_83> yeah Axis DRO, i'm just playing with the sim
[20:30:39] <_methods> what is dia in comp page?
[20:30:46] <_methods> 2.286?
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[20:32:39] <tom_83> ... what's the comp page?
[20:35:30] <tom_83> it just uses the data from the tool table doesn't it?
[20:36:01] <tom_83> dia in the tool table for tool No.1 is 6mm
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[20:40:47] <CaptHindsight> pintle tip, this is what blocks the orifices while the valve is closed http://imagebin.org/309940
[20:43:18] <CaptHindsight> 2mm diameter tip with ~170um orifices
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[20:44:42] <tjtr33> gotch ( could not get this for that photo tho ) http://www.dieselmotors.info/wp-content/uploads/2011/02/pintle-nozzles.jpg
[20:45:28] <tjtr33> so are these things spring loaded and solenoid retrcated?
[20:45:38] <CaptHindsight> only injector tip squirt sideways and all over the place :)
[20:45:49] <CaptHindsight> yeah, this one is
[20:46:24] <CaptHindsight> some use a hydraulic pressure amplifiers
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[20:47:47] <CaptHindsight> the aftermarket nozzles claim to be done by edm
[20:50:07] <tjtr33> a lot of tiny edm done in southern California, orifices, bonding tools, really teensy stuff you need microscopes to see
[20:50:20] <tjtr33> waveguides too
[20:53:16] <CaptHindsight> for the larger orifices >0.2mm just drilling
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[20:55:57] <CaptHindsight> http://www.najet.com/micro-hole-drilling/?gclid=CPj1z4Ldn74CFedFMgodaEwA5Q
[20:56:27] <tjtr33> national jet is good but for no burrs they'd edm
[20:58:40] <CaptHindsight> http://www.ebay.com/itm/like/151226995229?lpid=82 these fit in my old B&D cordless :)
[20:58:57] <tjtr33> i think it was the owner, who once at IMTS saw a 'tiniest edm electrode' proported, took it home, edm'd a hole thru it, then returned it with the smaller electrode tied in a knot thru the hole
[20:59:23] <CaptHindsight> nice
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[21:01:18] <tjtr33> heh the chuck runout would be > dia, .006"dia would need a perfect setup
[21:01:48] <CaptHindsight> heh
[21:02:28] <CaptHindsight> now you know why I've been working with all these piezo and linear motors
[21:03:36] <tjtr33> tom_83, for me it runs ok. i used inch tooltable with .23622 dia, and end posn was X0 Y.1181 ( with G42D1 and with G41 [no D ] )
[21:03:50] <tjtr33> isnt that correct? 1/2 dia offset to right?
[21:04:21] <tjtr33> Capt any inchworm feed units?
[21:04:28] <tjtr33> CaptHindsight, ^^
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[21:04:55] <CaptHindsight> most of this is just temporary steps to build the real tools, printheads to print printheads, machines to make smaller machines
[21:05:12] <tjtr33> like ultra precision drafting pencil advancers
[21:05:26] <tjtr33> ooh you into real govt work then
[21:05:43] <CaptHindsight> yeah, piezo and EAP (electro active polymer)
[21:05:56] <Deejay> gn8
[21:06:08] <CaptHindsight> shhh
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[21:07:26] <CaptHindsight> we need machines small enough to work with nerve endings, print blood vessels, make small valves etc etc
[21:08:02] <tjtr33> borg me!
[21:08:20] <CaptHindsight> http://www.3ders.org/articles/20140508-china-using-3d-bio-printer-to-create-artificial-dura-mater.html
[21:08:38] <CaptHindsight> http://www.3ders.org/articles/20140509-3d-printed-hydrogel-nanocomposites-helps-to-detoxify-the-blood-like-a-liver.html
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[21:09:43] <CaptHindsight> soon enough
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[21:11:10] <tjtr33> grinders & biohackers ( diy borgz)
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[21:12:51] <tjtr33> http://collaborate.biohack.me/Grinder_Resource_Library
[21:13:16] <CaptHindsight> with the way healthcare has been turned into a business it looks like everyone is going to be going to China for replacement parts, like that eye shop in Blade Runner
[21:13:31] <tjtr33> what is the material used to print new dura layers? harvested or grown?
[21:13:57] <tjtr33> argh horror stories of HongKong shopper missing,t hen turning up sans liver
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[21:14:27] <tjtr33> "no no no i only do eye"
[21:14:48] <tjtr33> " you nexus right?"
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[21:15:03] <CaptHindsight> that article uses synthetic materials
[21:15:31] <tjtr33> i thought its be real organic, wow, even more scifi
[21:16:28] <CaptHindsight> now i see why all the stem cell research was put on hold here in the 00's
[21:17:00] <CaptHindsight> less money in cures vs treating symptoms
[21:17:51] <tjtr33> true, very chinese to look at cause, very western to cut it off or make it feel better
[21:18:22] <tjtr33> chinese/eastern
[21:18:25] <CaptHindsight> combining EDM with DMLS might be a good approach for small precision metal parts
[21:18:47] <tjtr33> ? (googles DMLS)
[21:18:58] <CaptHindsight> direct metal laser sintering
[21:22:15] <CaptHindsight> EDM in nitrogen atmosphere
[21:22:28] <tjtr33> found it, some very nice tiny parts, so get net shape up with laser welding the power and refine with edm ( needs multiaxis edm and primitive shape tools [cyl sphere rect prisms... ])
[21:22:39] <CaptHindsight> you got it
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[21:22:55] <tjtr33> oh dry EDM, up in Mich at uni
[21:23:19] <CaptHindsight> then they could share the same atmosphere
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[21:23:47] <tjtr33> way too interesting, i gotta go exercise... walkies! bbl
[21:25:16] <tom_83> tjtr33, the DRO shows you the centre axis of the spindle
[21:25:55] <tom_83> and a had more moves that that in my program, so I think it was stopping short ready for the net move?
[21:26:13] <tom_83> i'm sort of getting the hang of it
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[21:31:26] <tjtr33> yeah so the center of the tool is 1/2 dia away from the line. that seems ok to me, you got 1/2 cutter dia offset applied at that point.
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[21:31:39] <tjtr33> what did you expect to have happen? or see?
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[21:33:13] <tjtr33> sorry to reply & run, but bbl
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[21:33:29] <tom_83> when I ran it, it was stopping short of X0 because I had more lines in my program...
[21:33:51] <tom_83> when I tool the following lines out (and just ran what I typed in here) I did as I expected
[21:34:10] <tom_83> it's my first go, much to learn
[21:34:31] <tom_83> took the following lines out*
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[21:53:16] <zeehero> Are these any equivalent open source arduino shields like RAMPs (for Repraps) for diy cnc mills?
[21:53:23] <zeehero> are there*
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[21:59:57] <uw> perhaps you should learn more about CNC before asking such a question
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[22:17:12] <CaptHindsight> zeehero: the arduino shields like RAMPS are for controlling tiny stepper motors, motors that can run a small cnc machine
[22:19:27] <zeehero> Hmm, I suppose my next question is why 3D printers tend to use USB to connect to the computer and CNC controllers seem to almost always use parallel ports instead - why do CNCs need real time OS communication and 3D printers don't?
[22:20:23] <Jymmm> zeehero: Uh, have you seen how "precise" or lack there of printers are?
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[22:21:02] <Jymmm> zeehero: and there isn't really a lot of tightly coordinate moves in a printer
[22:21:03] <kengu> zeehero: the usb is used to transfer gcode, parallel port is used to transfer ste&dir
[22:21:40] <zeehero> kengu: I see, so the difference is that the machine is sending direct instructions in the case of cnc rather than being parsed at the machine level
[22:21:58] <zeehero> er, computer is sending direct instructions
[22:22:01] <kengu> yeah.
[22:22:14] <zeehero> Jymmm: I've never had problems.
[22:22:28] <Jymmm> zeehero: linuxcnc can do 8 axises simultanously
[22:22:50] <Jymmm> No, you haven't, but you are not moving very fast or difficutl either.
[22:22:51] <zeehero> kengu: So I'd need to use a real time OS like a linux (obviously, given the name) to properly communicate
[22:23:19] <zeehero> Jymmm: I'm not subtracting material with my printer, no resistance, so understandably it's easy to run one and get precision - nothing's holding it back.
[22:23:38] <kengu> to communicate with stepper directly, yes.
[22:23:58] <Jymmm> zeehero: printing isn't very precise at all if you think about it there is a LOT of slop in it
[22:24:11] <zeeshan|2> jymmm lies!
[22:24:16] <Jymmm> lol
[22:24:17] <zeeshan|2> i did a print test on my laser printer :]
[22:24:26] <zeehero> another zee in here, neat
[22:24:38] <Jymmm> zeehero: Care to put $100 USD via Paypal on it?
[22:24:39] <zeeshan|2> it was dead on in the horizontal direction but 25 thou out in the vertical direction
[22:24:45] <zeeshan|2> i guess the roller had runout
[22:25:03] <zeehero> anyhow, what kind of requirements are needed of the computer driving the port?
[22:25:08] <zeeshan|2> i was just wondering, cause i print out designs
[22:25:15] <zeeshan|2> and lay them out on metal
[22:25:23] <zeehero> Since it's rather hard to find machines with those ports that aren't rather old or specifically ordered
[22:25:28] <zeeshan|2> its fairly accurate way of quickly laying out :]
[22:25:54] <kengu> zeehero: some "office desktops" lenovo/hp
[22:26:07] <zeehero> kengu: hmm, would an ancient thinkpad be able to handle it?
[22:26:28] <kengu> laptops are not always able
[22:26:40] <kengu> I was not able to get real time os working on one
[22:26:41] <zeehero> Hmm, that's concerning, what're the reasonings behind that?
[22:26:52] <kengu> but it is working on two other laptops
[22:27:02] <kengu> google rtos+laptop
[22:27:11] <zeehero> I will, guess it's not a simple answer then
[22:27:24] <kengu> or google rtos+[your laptop model]
[22:27:30] <zeehero> I've got old desktops to throw at this, though, so it's largely a non-issue
[22:29:00] <zeehero> I guess the last couple questions I have for a moment are : what's the desired strength of stepper (would 128oz-in do alright?) and what should I look for in router spindles?
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[22:36:37] <CaptHindsight> zeehero: injectors showed up, very easy to take apart
[22:36:57] <CaptHindsight> sorry zeeshan|2 ^^
[22:37:06] <CaptHindsight> zeehero: nevermind
[22:37:15] <zeehero> it's fine
[22:37:48] <zeehero> I gotta splice some power supply wires anyhow and do some work, thanks for the advice - if anyone answers the question I'll see it later
[22:37:58] zeehero is now known as zeehero[away]
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[22:44:58] <CaptHindsight> http://makezine.com/2014/05/09/making-the-luke-bionic-arm/ passed the FDA roadblock
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[22:47:36] <CaptHindsight> I need to make a prosthetic arm that can machine
[22:49:04] <Jymmm> 2.4GHz oh man, they're fucked... Key up at 100W RF and watch some poor bastard be twitching on the ground like a grand maul seizure
[22:49:56] <CaptHindsight> on sale for only $99,995.00!
[22:51:30] <CaptHindsight> so that's how they will keep $5k arms from being made available in the USA, FDA approval
[22:52:03] <CaptHindsight> http://www.youtube.com/watch?v=suwZ5D9bk0M
[22:53:46] <CaptHindsight> http://www.youtube.com/watch?v=_qUPnnROxvY like this budget version
[22:57:00] <CaptHindsight> Jymmm: I think the 2.4GHz link is just for configs
[22:57:18] <Jymmm> Yeah, custom BT probably
[22:59:43] <CaptHindsight> but yeah, hack the passwords and protocol and you have a chapter in a scifi novel
[23:00:38] <CaptHindsight> the arm gets remotely controlled while handing the President a letter opener
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[23:03:09] <CaptHindsight> http://3dprint.com/2438/50-prosthetic-3d-printed-hand/ without FDA approval
[23:03:20] <CaptHindsight> http://www.youtube.com/watch?v=BkK06113IGE
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[23:05:01] <CaptHindsight> holy jumping bezeesus if that arm is $42K that Luke arm is probably going to be $200k
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[23:20:10] <_methods> https://www.nintendo.com/whatsnew/detail/c4FWbi-Uave2T9R1h7SFzX0aoa-d4pgx
[23:20:16] <zeeshan|2> i need some adsvice
[23:20:25] <zeeshan|2> anyone hear of 'hydraulic servos'
[23:20:30] <zeeshan|2> whats the proper term
[23:20:58] <CaptHindsight> hydraulic actuator maybe
[23:21:11] <CaptHindsight> if thats what you are referring to
[23:21:59] <CaptHindsight> or is it a valve?
[23:22:17] <PCW> relatively common on old CNC machines (and flight simulators)
[23:23:09] <zeeshan|2> CaptHindsight: im doing a lot of research in forming
[23:23:12] <zeeshan|2> and im going to be working with
[23:23:26] <zeeshan|2> instron servopress 150
[23:23:27] <zeeshan|2> and
[23:23:41] <zeeshan|2> interlaken servo press
[23:23:43] <zeeshan|2> 150ton
[23:23:50] <zeeshan|2> i'm just trying to do research on the machines
[23:23:56] <zeeshan|2> so i have a clue
[23:24:01] <zeeshan|2> never worked on this sort of equipment before
[23:24:18] <zeeshan|2> http://mmri.mcmaster.ca/mfl/facilities_interlaken.html
[23:24:26] <zeeshan|2> from the brief look i got
[23:24:32] <zeeshan|2> its got 4 'actuators'
[23:24:41] <zeeshan|2> i think ive heard them called 'hydraulic servos'
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[23:25:09] <PCW> probably some force/bandwidth trade-off where hydraulic makes more sense then motors/screws
[23:25:19] <CaptHindsight> yeah they are pistons that respond to voltage , so more than just ON/OFF
[23:25:27] <zeeshan|2> so
[23:25:33] <zeeshan|2> voltage is directly propoertional to linear motion
[23:25:38] <zeeshan|2> similar to an electronic servo
[23:25:46] <zeeshan|2> but instead uses hydraulic fluid?
[23:25:48] <CaptHindsight> depends on the controls
[23:26:09] <PCW> yeah may be position or force feedback (or both)
[23:26:34] <zeeshan|2> okay, i need to get manuals for these
[23:26:41] <zeeshan|2> i wanna know em inside out!
[23:26:43] <zeeshan|2> 2 years is along time
[23:27:18] <CaptHindsight> http://www.moog.com/products/actuators-servoactuators/industrial/hydraulic/
[23:27:37] <zeeshan|2> wow
[23:27:46] <zeeshan|2> its a frigging hydraulic cylinder with an encoder on it
[23:27:46] <zeeshan|2> haha
[23:28:05] <zeeshan|2> a085 seems to have a transducer on it too
[23:28:12] <zeeshan|2> so im assuming pressure feedback like pcw was saying
[23:28:13] <PCW> and a fancy Moog spool valve
[23:28:17] <CaptHindsight> and maybe a valve with an encoder and motor to control the amount it opens/closes
[23:28:33] <_methods> don't want your ram gettin racked\
[23:28:40] <zeeshan|2> what controls the valve open and close
[23:28:45] <zeeshan|2> i mean thats what prolly makes it a servomechanism
[23:28:51] <zeeshan|2> cause a regular cylinder is on and off
[23:29:04] <_methods> very bad if those cylinders get racked
[23:29:07] <_methods> they get stuck
[23:29:13] <PCW> The valves are sort of voice coil arrangements
[23:29:38] <CaptHindsight> or valve with servo motor or stepper to control its position
[23:30:00] <zeeshan|2> how do you control the extension length of the cylinder acutuator
[23:30:01] <CaptHindsight> so it can control the rate of flow in and out of the cylinder
[23:30:04] <zeeshan|2> when you can only control the fluid pressure?
[23:30:06] <zeeshan|2> through the valve
[23:30:07] <PCW> they are normally voice coils for speed
[23:30:28] <CaptHindsight> encoder on the piston as well as the valve
[23:30:43] <zeeshan|2> yes, but encoder on the piston is telling position
[23:30:46] <zeeshan|2> how do you actually control the position?
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[23:30:54] <zeeshan|2> by oscillating the fluid flow?
[23:31:06] <CaptHindsight> by opening and closing the valves
[23:31:17] <zeeshan|2> ahhh. and the voice coils makse sense
[23:31:21] <zeeshan|2> cause you gotta do it at high speed
[23:31:38] <PCW> many CNC machines of the 60's used this for axis position control
[23:32:01] <zeeshan|2> well when i search for cnc machines i come across thread forming cnc machines
[23:32:06] <zeeshan|2> and they seem to be still hydraulic based
[23:32:10] <CaptHindsight> you just play with the pressure on each side of the piston or use the load on the piston form return/retract
[23:32:12] <zeeshan|2> never looked too much into the servomechanism
[23:32:26] <zeeshan|2> CaptHindsight: makes snse!
[23:32:48] <zeeshan|2> so interesting. :]
[23:32:53] <PCW> still used for flight simulators and things that shake whole buildings
[23:33:16] <zeeshan|2> okay, one last question
[23:33:21] <zeeshan|2> its of a completely different subject
[23:33:40] <zeeshan|2> has anyone got experience in using 2 ccd cameras in stereo configuration to measure the depth of something?
[23:33:51] <zeeshan|2> the thing i keep finding online is
[23:33:55] <zeeshan|2> 'long range imaging'
[23:34:09] <zeeshan|2> but it doesn't give much info on how to actually do it
[23:34:12] <zeeshan|2> just describes the process
[23:34:18] <_methods> opencv
[23:34:25] <_methods> might have something for it
[23:34:54] <_methods> http://docs.opencv.org/doc/tutorials/features2d/feature_description/feature_description.html
[23:35:12] <_methods> eh ignore that
[23:35:33] <zeeshan|2> http://i.stack.imgur.com/UQUYY.jpg
[23:35:33] <zeeshan|2> wow
[23:35:39] <zeeshan|2> thats done using opencv...
[23:35:48] <zeeshan|2> thats exactly what im looking for
[23:35:51] <_methods> yeah opencv is great
[23:35:53] <zeeshan|2> im wondering if thats done with 1 cam
[23:35:54] <zeeshan|2> or 2 cams
[23:36:23] <_methods> http://docs.opencv.org/trunk/doc/py_tutorials/py_calib3d/py_depthmap/py_depthmap.html?highlight=disparity%20map
[23:36:25] <CaptHindsight> http://ojs.academypublisher.com/index.php/jcp/article/download/jcp0702399404/4328 and tons of similar papers covering the algorithms
[23:36:54] <zeeshan|2> CaptHindsight: i'm not a programmer!
[23:37:05] <zeeshan|2> okay
[23:37:07] <zeeshan|2> im gonan shut up
[23:37:09] <zeeshan|2> cause the paper you gave me
[23:37:11] <zeeshan|2> shows me the math :]
[23:37:15] <zeeshan|2> thank you!
[23:37:21] <zeeshan|2> whatd you search for?
[23:37:33] <zeeshan|2> you guys are awesome
[23:37:36] <zeeshan|2> so resourceful
[23:37:40] <zeeshan|2> <3
[23:37:42] <CaptHindsight> stereoscopic scanning
[23:37:46] <_methods> yeah i don't know shit.......
[23:37:52] <zeeshan|2> _methods: that link is good too
[23:38:09] <zeeshan|2> i've gott acome up with a quick and easy way to measure strain fields
[23:38:12] <zeeshan|2> for bulge stesting
[23:38:23] <zeeshan|2> we wanna investigate how much it'd cost to just build a quick rig
[23:38:27] <zeeshan|2> vs buying commercial units
[23:38:31] <CaptHindsight> whats the range of deflection and what res do you need?
[23:38:38] <_methods> CaptHindsight is the man he does all that micro shit
[23:38:46] <zeeshan|2> CaptHindsight:
[23:38:50] <zeeshan|2> do you know what a bulge test is?
[23:38:58] <zeeshan|2> and im not talking about the dirty one.
[23:39:23] <zeeshan|2> you take a blank disc
[23:39:40] <zeeshan|2> and you clamp it down around the periphery, and pressure one side of with thousands of psi of fluid pressure
[23:39:45] <zeeshan|2> you end up with a dome like this:
[23:39:48] <zeeshan|2> http://www.emeraldinsight.com/content_images/fig/1270830402007.png
[23:39:51] <zeeshan|2> and a very repeatable failure
[23:39:56] <zeeshan|2> due to biaxial loading
[23:40:14] <CaptHindsight> http://www.springerimages.com/img/Images/Springer/JOU=11340/VOL=2012.52/ISU=7/ART=9532/MediaObjects/MEDIUM_11340_2011_9532_Fig1_HTML.jpg
[23:40:21] <zeeshan|2> exactly
[23:40:41] <zeeshan|2> http://www.atilim.edu.tr/~serhat.kaya/Resear14.jpg
[23:40:46] <CaptHindsight> gotta go, but post the questions
[23:40:47] <zeeshan|2> what you do is spray on a spectral pattern
[23:40:56] <zeeshan|2> the smallest dot is 0.1mm
[23:41:01] <zeeshan|2> over the 6 diameter of the disc
[23:41:14] <zeeshan|2> and the sphere grows to about 3" in height
[23:41:17] <CaptHindsight> these guys will know
[23:41:36] <zeeshan|2> =D
[23:41:44] <zeeshan|2> im gonna read through that paper
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[23:44:27] <_methods> check out the kinect
[23:44:37] <_methods> i already does a lot of dirty work for you
[23:44:50] <_methods> it has 2 cams and outputs a nice ir field
[23:45:40] <_methods> i hear the kinect2 is even better but i haven't bought one to play with yet
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[23:52:44] <zeeshan|2> thank god
[23:52:50] <zeeshan|2> prof decided to use an off the shelf system
[23:52:51] <zeeshan|2> aramis.
[23:52:56] <zeeshan|2> don't have to make a custom software
[23:52:58] <zeeshan|2> phew
[23:53:19] <zeeshan|2> i havent programmed in 4 years
[23:53:20] <zeeshan|2> !
[23:53:25] <zeeshan|2> well except the minor modbus stuff
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[23:53:47] <zeeshan|2> http://www.westcam-datentechnik.at/assets/files/Invitation-GOM_ARAMIS_Bulge-Test.pdf
[23:53:49] <zeeshan|2> already done
[23:53:49] <zeeshan|2> :D
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[23:58:28] <CaptHindsight> I've only seen the Kinect used for longer range coarse measurements. Maybe it just needs a lens mod