#linuxcnc | Logs for 2013-01-14

[00:00:34] <tjb1> Eh, its $450 on amazon
[00:01:12] <tjb1> http://www.ebay.com/itm/Brand-New-in-case-Mitutoyo-Digimatic-Caliper-12-500-754-10-/181060721437?pt=LH_DefaultDomain_0&hash=item2a280f5b1d lol
[00:01:41] <Valen> https://www.google.com.au/#q=Mitutoyo+Digimatic+Caliper+12&hl=en&safe=off&tbo=d&source=lnms&tbm=shop&sa=X&ei=2UrzUN-FJYmjkQWt_IFo&sqi=2&ved=0CAkQ_AUoAA&bav=on.2,or.r_gc.r_pw.r_cp.r_qf.&bvm=bv.1357700187,d.dGI&fp=5bcc6a91d06d540&biw=1920&bih=942
[00:02:15] <tjb1> Enco it is then…isn't Enco part of MSC?
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[00:02:33] <Valen> hah http://au.element14.com/jsp/displayProduct.jsp?sku=1667281&CMP=e-2072-00001000&gross_price=true $1500
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[00:03:19] <tandoori> ugh i dont know what to get anymore, oh well. soon i will get something
[00:04:53] <tjb1> http://www.use-enco.com/CGI/INSRIT?PMAKA=606-4740&PMPXNO=951938&PARTPG=INLMK32
[00:07:17] <tjb1> Can someone tell me the difference between these? http://www.use-enco.com/CGI/INSRIT?PMAKA=PU606-4770 &&& http://www.use-enco.com/CGI/INSRIT?PMAKA=PU606-4750
[00:07:48] <jdh> point length
[00:08:11] <tjb1> The cheaper one has a longer point
[00:08:18] <jdh> nope.
[00:09:03] <tjb1> It does in their catalog
[00:09:20] <tjb1> The complete set at least
[00:09:38] <jdh> it doesn't on the two links you just pasted.
[00:09:41] <jdh> long $135, short $95
[00:10:09] <tjb1> Ok look at the catalog for complete sets
[00:10:18] <jdh> no.
[00:10:33] <tjb1> 606-4751 is
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[00:22:39] <Jymmm> Bah, can't find any 250V inline fuse holders
[00:23:09] <AR_> anyone think this could be converted into a milling spindle? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=170966251651
[00:23:14] <jdh> http://www.citizenschwartz.com/nation-still-reeling-after-rush-limbaugh-r
[00:23:15] <jdh> evealed-to-be-30-year-long-andy-kaufman-prank/
[00:23:20] <jdh> urk.
[00:23:37] <AR_> i emailed the seller and they said the only info on it is what is posted, but he thinks it would probably be ok for light to medium milling
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[00:31:05] <Valen> hard part would be putting a chuck on it accuralty
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[00:38:01] <tandoori> zomg i want THIS: http://www.microproto.com/DSLSrot.htm
[00:38:27] * tandoori pinches Valen's cheek
[00:39:05] <tandoori> that looks to be so high quality
[00:39:30] <tandoori> when i become adept, i could make suff and sell em and make a return on my investment, aye?
[00:40:52] <tandoori> "Complete MicroMill DSLS System with 4th Axis DSLS Rotary Table and Adjustable Tailstock" = 3.695K USD. Its a lot, but It definitely appears to be worth it
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[01:08:36] <tandoori> mmmh. Yes. That mill should be able to do just about anything I could ever want it to do
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[01:22:37] <Valen> you know ours was $1500 australian and about that again in CnCing it
[01:22:46] <Valen> 750x200 work area
[01:24:21] * Valen pokes tandoori
[01:24:45] <tandoori> hmm?
[01:25:33] <Valen> that mill is expensive
[01:25:54] <Valen> I suggest if you are in a post industrialised country to look for a second hand mill
[01:26:03] <Valen> except australia
[01:26:15] <Valen> what little stuff we see is overpriced crap
[01:28:54] <tandoori> id rather have new stuff
[01:32:51] <ReadError> taig and call it done.
[01:33:01] <ReadError> unless you want a grizzly
[01:33:12] <ReadError> but i think they are pretty advance to setup
[01:33:18] <tandoori> that is a tiag, right?
[01:36:18] <ReadError> its a taig with a 4th axis
[01:36:24] <ReadError> but like 2x the price
[01:36:51] <ReadError> if thats where you got the 3.695k from
[01:37:05] <ReadError> if you are doing pcbs
[01:37:10] <ReadError> why on earth do you want a 4th axis
[01:37:48] <tandoori> ReadError: because i have other things I want to use it for
[01:37:51] <tandoori> not just PCBs
[01:38:01] <tandoori> really? that is overpriced?
[01:39:42] <tandoori> ReadError: if i can get all that for 1/2 price i would be very happy
[01:40:27] <jdh> taig with servos
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[01:43:57] <tandoori> jdh huh?
[01:44:36] <jdh> the link
[01:45:07] <jdh> was a taig with servos. Hence the 'overpriced' part.
[01:46:54] <tandoori> servos are good?
[01:47:12] <jdh> sure, but I'd think overkill for a taig
[01:48:15] <ReadError> http://dl.dropbox.com/u/25091878/Photo%20Jan%2013%2C%208%2046%2001%20PM.jpg
[01:48:20] <ReadError> just pulled that top one off
[01:48:29] <ReadError> surface finish looks better irl
[01:48:37] <ReadError> but still not super mirror finish
[01:49:04] <Valen> Al for a quad? bit heavy ReadError?
[01:49:23] <ReadError> Valen, around 35g per arm
[01:49:35] <ReadError> which towel bar minus motor mounts was like 30g
[01:49:45] <Valen> any paticular reason to not go CF?
[01:49:45] <ReadError> and the mounts alone where 5g
[01:49:51] <ReadError> CF....price
[01:49:59] <Valen> pshaw, CF is cheap these days
[01:50:06] <ReadError> i got 72" of this aluminum for 28$...
[01:50:13] <ReadError> enough to do like 18 arms
[01:50:26] <ReadError> last (only) sheet of CF I got was 50$
[01:50:28] <ReadError> for 12x12"
[01:50:33] <tandoori> jdh: are they very precise?
[01:50:51] <ReadError> tandoori, i did those arms on the taig
[01:50:57] <ReadError> but im a horrible machinist
[01:50:58] <Valen> get it in fabric form
[01:51:03] <Valen> around $45 a meter
[01:51:05] <jdh> on a taig that cost half as much
[01:51:17] <tandoori> no no, i meant the servos on the taig
[01:51:39] <ReadError> Valen, it still needs to be layered up doesnt it?
[01:51:41] <tandoori> ReadError: what are those things?
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[01:52:22] <ReadError> quad rotor arms
[01:52:28] <Valen> yes, but you don't make layers then cut them out
[01:52:45] <ReadError> wouldnt i need a mold?
[01:52:47] <Valen> make a mould, lay CF into it, the loads your dealing with a single layer would do
[01:52:53] <ReadError> yea
[01:52:57] <Valen> CnC AL makes for great moulds ;->
[01:53:08] <ReadError> i just do this for fun
[01:53:17] <ReadError> i wont be terribly upset if its no good
[01:53:22] <Valen> we are going to make a CF gantry for our new mill
[01:53:45] <ReadError> this frame is going to be sexy
[01:54:07] <Valen> get a buffing wheel ;->
[01:54:15] <Valen> *everything* looks like sex when its shiny lol
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[01:54:59] <ReadError> haha yea
[01:55:03] <ReadError> thats step2 ;)
[01:55:52] <Valen> some nice parts anyway ReadError
[01:56:08] <ReadError> ty
[01:56:10] <Valen> I always love the spirals on the flats ;->
[01:56:27] <tandoori> i am confused. should i not get that with the servos??
[01:56:27] <ReadError> its strange
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[01:56:29] <ReadError> they feel smooth
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[01:56:39] <ReadError> Tom_itx will sell ya on some servos ;)
[01:56:46] <jdh> that's entirely up to you.
[01:56:47] <Valen> heh should have ball milled all the square corners to round it all off just for the giggles ;->
[01:57:03] * tandoori frowns
[01:57:04] <jdh> but, I don't think a taig with servos would be $1000 better than a taig with steppers
[01:57:10] <ReadError> Valen, thats an idea
[01:57:18] <tandoori> i dont want anything that i have to retrofit
[01:57:25] <ReadError> i can do a tracing toolpath
[01:57:31] <Valen> oh and don't forget to put a logo into it ;->
[01:57:35] <ReadError> ;O
[01:57:37] <Valen> what are you using for CAM ReadError?
[01:57:43] <jdh> http://tinyurl.com/a54arm5
[01:57:48] <ReadError> well, i _was/am_ using visualmill
[01:57:51] <ReadError> but this stuff here
[01:57:54] <jdh> ^^ my afternoon
[01:58:00] <ReadError> i used the free hsmxpress
[01:58:04] <ReadError> which is very nice
[01:58:07] <ReadError> for solidworks
[01:58:10] <ReadError> free cam :)
[01:58:22] <Valen> handy
[01:59:10] <ReadError> give it a shot
[01:59:13] <ReadError> its pretty decent
[01:59:19] <Valen> I use rhinocam and rhino
[01:59:23] <ReadError> ahh
[01:59:31] <ReadError> thats the same as visualmill i think
[01:59:33] <ReadError> same company
[01:59:39] <Valen> yes it is now you mention it
[01:59:42] <Valen> anyway better go, gotta rebuild my brakes
[02:00:18] <Valen> tandoori: anything you get is going to need work. If money isn't much of a problem look at tormach (sp?)
[02:00:30] <Valen> they do larger size stuff that can do real milling
[02:00:39] <ReadError> tomach or w/e is super expensive i think
[02:00:48] <Valen> not "super" expensive
[02:00:51] <Valen> just not cheap
[02:00:57] <ReadError> 8.5k iirc
[02:01:06] <Valen> but its the cheapest I've seen for a serious mill thats ready to run
[02:01:15] <Valen> that sort of ball park yes
[02:01:30] <jdh> is it really serious?
[02:01:42] <jdh> do they still
[02:01:43] <tandoori> valen, i dont care about assembly
[02:01:47] <Valen> eh good enough
[02:01:53] <jdh> do they still use steppers?
[02:01:54] <Valen> step down from there is something like a taig or an X3 with a CnC kit
[02:02:09] <Valen> i think so jdh, but theres nothing inherently wrong with that
[02:02:27] <Valen> I prefer servos but steppers are cheaper
[02:03:01] <jdh> I have steppers because they are cheaper, I would prefer servos
[02:03:05] <jdh> but... on a taig?
[02:03:26] <tandoori> well i definitely want one with the 4 axis like that
[02:03:30] <Valen> yeah, you're not going to hit high enough speeds to warrant servos i think
[02:03:39] <Valen> you can buy CnC 4th axies off the shelf
[02:03:46] <tandoori> valen even if i want to work with Al?
[02:03:52] <Valen> they just bolt to the table
[02:04:04] <Valen> servo's are mostly about speed and accuracy
[02:04:16] <tandoori> i want accuracy!
[02:04:20] <ReadError> lol
[02:04:26] <Valen> so gear your steppers ;-P
[02:04:55] <ReadError> taig has 20tpi screws
[02:04:57] <Valen> in about 6 months or so I hope to have a beta of the ideal mill for ReadError
[02:05:20] <Valen> only down side is it'll weigh 450Kg (900lbs) and be full of epoxy granite
[02:05:27] <Valen> and be in kit form
[02:05:27] <ReadError> lol
[02:06:00] <ReadError> i think a drug habit would cost less than my current ones
[02:06:02] <Valen> tandoori: you need to define what accuracy you want
[02:06:12] <Valen> as in +-.0xmm
[02:06:19] <Valen> also what repeatability
[02:06:27] <jdh> I think .0mm would be fine.
[02:06:32] <ReadError> lol
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[02:06:44] <Valen> jdh: we use glass scales on ours for position feedback .001mm ;-P
[02:06:58] <Valen> anyway catchyers all later
[02:07:01] <jdh> bf20?
[02:07:06] <ReadError> i really wanted that cncrouterparts one
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[02:07:13] <ReadError> 1.6k which i could totally do right now
[02:07:24] <ReadError> but everyone was like, rack and pinion gross, dont get it
[02:07:43] <tandoori> lol
[02:08:06] <jdh> teh router kit?
[02:08:10] <ReadError> ya
[02:08:13] <ReadError> hold
[02:08:45] <ReadError> http://www.cncrouterparts.com/crp2448-2-x-4-cnc-router-kit-p-164.html
[02:09:09] <ReadError> it looks solid
[02:09:14] <jdh> buy one
[02:09:16] <ReadError> next weekend or at work i need to fire up solid works
[02:09:31] <ReadError> and piece one together with acme screws and such
[02:09:37] <ReadError> and 80/20
[02:09:53] <tandoori> ReadError: so how much could i get that setup with the 4 axes with stepper motors?
[02:10:26] <ReadError> man personall
[02:10:27] <ReadError> y
[02:10:34] <ReadError> this stuff is much harder than you think
[02:10:38] <jdh> heh
[02:10:42] <ReadError> i came in with an "awww, this is going to be easy"
[02:10:44] <ReadError> let me tell you
[02:10:45] <ReadError> its not
[02:10:58] <ReadError> 'draw some stuff press some buttons and make parts"
[02:11:18] <ReadError> and i learned through trial and error that its not nearly that simple
[02:11:31] <ReadError> hence why i bug these guys all day about how to do certain things that i have never done
[02:12:24] <ReadError> theres some good ole machinist here
[02:12:38] <jdh> and electrical, and mechanical
[02:12:45] <jdh> and software
[02:12:47] <ReadError> andy, archivist,
[02:12:49] <ReadError> pfred
[02:12:54] <ReadError> yea
[02:12:56] <ReadError> its a good mix
[02:13:08] <ReadError> programmers, machinist, etc
[02:13:13] <ReadError> Tom_itx is pretty good
[02:13:29] <t12> hah
[02:13:33] <t12> people are actively promoting that pov though
[02:13:50] <t12> people continously tell me in the future you're gonna have a replicator and be like i want a blender and it will 3d print you one!
[02:13:55] <t12> i'm usually like um not really
[02:14:00] <jdh> heh, then try to figure out blender
[02:14:02] <ReadError> lol
[02:14:11] <t12> professors at work do that stuff all the time
[02:14:20] <t12> megahyped on 3d printers
[02:14:25] <ReadError> yea, you wont be able to print a 3d blender
[02:14:26] <t12> not so hyped on the cnc mill
[02:14:31] <t12> cause that requires you to develop skills
[02:14:34] <t12> and not print files
[02:14:46] <ReadError> yea
[02:14:52] <ReadError> 3d printing is pretty easy
[02:15:06] <t12> its pretty nice for prototyping
[02:15:11] <ReadError> yea
[02:15:16] <t12> and i imagine moldmaking
[02:15:18] <ReadError> tolerances and stuff are too hard to control
[02:15:26] <ReadError> since it shrinks and stuff
[02:15:29] <tandoori> i think those servos would come in handy when milling pcbs
[02:15:39] <ReadError> *sigh*
[02:15:41] <ReadError> get it then
[02:15:53] <tandoori> why the sign?
[02:15:57] <tandoori> *sigh
[02:16:04] <ReadError> you will probably need a mesa card too
[02:16:18] <tandoori> dunno what that is
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[02:18:07] <tandoori> ok fine i will get the darn stepper motors, but i have no knowledge on what to purchase
[02:18:47] <jdh> tehn get teh servos
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[02:22:53] <tandoori> that may be the best option
[02:24:15] <ReadError> whats your top dollar
[02:24:22] <ReadError> requirements and price.
[02:24:48] <ReadError> and by top dollar i mean, "the amount i can spend before my wife divorces me"
[02:25:17] <jdh> or the amount you will tell her you spent,.
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[02:38:38] <atom1> oh i remember why now
[02:39:09] <atom1> permissions
[02:39:18] <atom1> the t10 is blinking now
[02:39:24] <atom1> avrdude -c avrisp2 -P usb -p t10 -v -U flash:w:/home/tom/avrtest/Tiny10_asm/t10blink.hex:i
[02:40:14] <atom1> woops
[02:40:16] <atom1> sry
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[02:52:35] <r00t4rd3d> http://www.ebay.com/itm/Router-collet-1-8-X-1-4-brass-/170972676495?pt=Sanders_Sandblasters&hash=item27cec4018f
[02:52:47] <r00t4rd3d> anyone know of anything better then that?
[02:53:22] <r00t4rd3d> 15 bucks and they dont last
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[02:57:38] <ReadError> how are you breaking them?
[02:59:29] <r00t4rd3d> they just wear out
[02:59:32] <r00t4rd3d> brass
[02:59:42] <r00t4rd3d> i just found these steel ones:
[02:59:42] <r00t4rd3d> http://www.mlcswoodworking.com/shopsite_sc/store/html/smarthtml/pages/bushing_ball_bearings.html
[02:59:53] <r00t4rd3d> $4
[03:02:43] <r00t4rd3d> with the brass ones after awhile I can tighten my collet as tight as it will go
[03:03:21] <r00t4rd3d> and the bit is still lose
[03:03:25] <r00t4rd3d> loose
[03:04:36] <r00t4rd3d> now i gotta use 1/4 bits and i hate that cause they make a damn mess
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[03:05:55] <jdh> 2x the chips?
[03:06:04] <r00t4rd3d> yeah
[03:06:27] <r00t4rd3d> and i only have regular wood bits in 1/4 , no carbide ones
[03:07:19] <r00t4rd3d> I tried using my adapter one last time tonight, i put a piece of thread tape around my bit first
[03:07:28] <r00t4rd3d> it fell out
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[04:48:37] <tjb1> That's amazing…something left Hong Kong on Saturday, is being delivered in Pennsylvania tomorrow
[05:01:42] <tjb1> Does anyone see anything wrong with this? http://www.use-enco.com/CGI/INSRIT?PARTPG=INLMKD&PMPXNO=951516&PMAKA=606-4725
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[05:27:44] <Connor> jdh: You still up?
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[06:00:32] <mrsun> hmm there was some "gui" for axis that let you make pockets, slots etc real fast directly from linuxcnc .. what was that? :)
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[06:24:07] <archivist> mrsun, http://linuxcnc.org/docs/html/gui/ngcgui.html is one of them
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[07:15:36] <tjb1> So does the D525MW have a usable parallel port onboard? Just confirming
[07:16:25] <Jymmm> Put a towel on your windshield, then just pull it off in the morning... no frost to scrape off.
[07:18:39] <tjb1> Get your suv fixed yet Jymmm
[07:18:50] <Jymmm> Nope
[07:19:25] <Jymmm> In-tank fuel pump is dead.
[07:20:32] <tjb1> well drop it and replace it
[07:21:09] <Jymmm> it's got 20 gal in itand I just dont have the jacks, etc to drop it
[07:22:19] <tjb1> siphon it out
[07:22:35] <Jymmm> to where?
[07:22:41] <tjb1> a gas can?
[07:22:50] <Jymmm> 20 gallons???
[07:23:03] <tjb1> 4 gas cans?
[07:23:10] <tjb1> into another vehicle?
[07:23:49] <tjb1> bathtub?
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[08:08:17] <DJ9DJ> moin
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[15:25:46] <Guest6169> hi
[15:26:35] <Guest6169> I looking for a interface cnc controller, but no find it. Is a black box
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[15:27:42] <JesusAlos> appears white silkscreen a text of function terminal
[15:28:08] <JesusAlos> someone did mention in his day
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[15:53:11] <mrsun> hmm, "german quality" vice ... one corner of the base plate is 0.05mm higher then the others
[15:53:25] <mrsun> spotted it on the surface plate just for fun ... 4 little dots was all i got in contact area :P
[15:55:01] <r00t4rd3d> go on the internet and complain.
[15:55:33] <mrsun> yeah!
[15:55:37] <archivist> define "quality" though
[15:56:14] <mrsun> archivist, well the casting looks good, machining not so good ... and definetley not the accuracy .. but hell its a drilling vice so :P
[15:57:18] <mrsun> still a drilling vice for $100 i feel should be somewhat better then that :P
[15:57:45] <r00t4rd3d> maybe your tape measure is .05 off
[15:58:05] <mrsun> r00t4rd3d, yeah .. indicator and surface plate .. now thats a "tape measure" :P
[15:59:15] <r00t4rd3d> all I use is a tape measure :)
[15:59:29] <archivist> and did you take the average of three readings to get rid of your measuring error
[16:00:31] <r00t4rd3d> measure once, cut 3 times!
[16:00:41] <mrsun> archivist, avarage ? when i got exactly the same reading every time i swooped the indicator
[16:01:18] <mrsun> and i did it more then 3 times to check both sides, they are equaly out atleast .. so its "straight" that way
[16:01:36] <mrsun> begins at 0 at the far end and ends up at 0.05 nearest the fixed jaw
[16:01:47] <r00t4rd3d> file it out
[16:02:22] <r00t4rd3d> .05 aint but a p hair
[16:03:11] <mrsun> well everything i put in it will have a hole that is 0.05 off and depending on how long the piece is that can add up :P
[16:04:45] <mrsun> but gonna convert it to a small milling vice for the mini mill =)
[16:04:52] <mrsun> so will redo surfaces anyhow :P
[16:05:07] <r00t4rd3d> i could see if it was inches
[16:05:19] <mrsun> huh ? :)
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[16:05:35] <mrsun> 0.05 is about 0.002 inch
[16:06:53] <r00t4rd3d> which is minuscule
[16:07:28] <mrsun> when working with tape measure yes :P
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[16:07:58] <mrsun> but as its "tapered" upwards, if i want to do something to fit something else that part will also be tapered ...
[16:09:46] <r00t4rd3d> compensate with a shotgun in your mouth
[16:09:55] <r00t4rd3d> :D
[16:11:29] <r00t4rd3d> What killed him? .002 of an inch!
[16:12:32] <r00t4rd3d> what are you making, rockets?
[16:13:02] <mrsun> stuff that is good enough for me
[16:13:07] <mrsun> to my standards
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[16:30:02] <tjb1> Our school got a 60w laser :D
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[17:28:13] <Loetmichel> re @ home
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[17:50:59] <tjb1> Im going to convert my vinyl cutter to run linuxcnc
[17:51:15] <tjb1> and sheetcam
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[17:51:51] <tjb1> Because signblazer and signcut suck
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[17:56:02] <IchGuckLive> hi all
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[18:12:28] <skunkworks> http://groups.yahoo.com/group/mach1mach2cnc/message/138152
[18:13:05] <skunkworks> "On the "we would like to do" list is something to replace the brains..
[18:13:07] <skunkworks> The thinking is to have more of a PLC like GUI.. I know the and and or
[18:13:09] <skunkworks> gates are simple but they are not like what you see in Industry so
[18:13:10] <skunkworks> Ladder logic is a more logical approach."
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[18:16:47] <Gabriel__> Hi all. I try to run Linuxcnc on a RT_PREEMPT patched kernel (branch rtos-integration-preview3, configured --with-threads=rt-preempt-user), and I get the error "Failed to claim parallel port /dev/parport0". The device /dev/parport0 exists. Any hints about this problem? Thanks.
[18:18:31] <skunkworks> Gabriel__: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?NewRTInstall
[18:19:05] <skunkworks> at the bottom of the page it talks about the printer port
[18:20:48] <Gabriel__> skunkworks: Thanks, I'm checking it.
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[18:31:01] <Gabriel__> skunkworks: Unloading the "lp" kernel module solved the problem, thank you.
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[18:41:50] <skunkworks> great!
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[19:10:00] <thrile> can anybody help me understand how the planner works? http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Trapezoidal_Velocity_Profile_Trajectory_Planner
[19:10:19] <cradek> thrile: can you ask a more specific question?
[19:10:52] <thrile> I'm trying to find X in the blend areas, and its acceleration
[19:11:45] <thrile> I made on paper and in mathematica a very simple motion, close to the one in the picture: {{0, 0}, {10, 100}, {40, 175}, {70, 100}, {100, 110}, {155, 0}}
[19:12:26] <thrile> using the very simple formulas explained there, not any fancy multi-line blending or anything
[19:14:30] <thrile> more specifically, I'm not looking for a function, but a method of finding discrete X values. I suspect the acceleration is a diff equation, and X seems constant to me -_-
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[19:19:09] <cradek> the points along the path come from calls to tcGetPos, which wrap a bunch of posemath library calls
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[19:19:22] <cradek> I don't understand what you mean about X seeming constant
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[19:20:34] <thrile> invariant in regard with time
[19:21:24] <cradek> well if you're moving X and your "X" values don't change, you're not looking at the right X
[19:22:36] <IchGuckLive> cradek: is the hal able to read the next gcode line or the x,y value of the next move ahad
[19:23:00] <cradek> IchGuckLive: no, nothing at the HAL level knows the future
[19:23:18] <thrile> I'm not talking about an actual machine, but the formula posted there for X
[19:23:41] <IchGuckLive> cradek: thanks
[19:23:43] <cradek> are you asking about the actual source code, or the wiki page?
[19:23:59] <thrile> Are there newbie intro papers on parabolic blendings and such? :)
[19:24:16] <thrile> Oh, I barely have any idea about the source code, I'm just trying to understand the math
[19:24:49] <cradek> I doubt that wiki page has much to do with how linuxcnc actually works
[19:25:00] <cradek> I did not understand you were asking about the wiki page
[19:25:06] <thrile> Most likely
[19:25:16] <thrile> But it's the only sane example of parabolic blends I've found around
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[19:26:15] <thrile> Well, I'm asking "How do I figure out discrete X values during the parabolic blend regions?" and posted the wiki as pretty much the only decent source of info on the topic. Although you probably knew it :)
[19:26:31] <mhaberler> thrile: some locations to dig for examples:
[19:26:32] <mhaberler> https://trac.lcsr.jhu.edu/cisst/wiki/cisstRobotTutorial
[19:27:09] <mhaberler> maybe here: http://www.ros.org/wiki/robot_mechanism_controllers/JointSplineTrajectoryController
[19:27:27] <thrile> I've fought with this paper all morning https://smartech.gatech.edu/bitstream/handle/1853/41948/ParabolicBlends.pdf?sequence=3 just to realise it's not really detailed on what I need
[19:27:52] <mhaberler> maybe here: http://code.google.com/p/robotics-toolbox-python/source/browse/#svn%2Ftrunk%2Frobotics-toolbox-python
[19:28:11] <mhaberler> maybe here: http://svn.cs.brynmawr.edu/viewvc/Myro/trunk/robonova/
[19:30:01] <mhaberler> on the cubic interpolator see here, unsure if this relates to blending as done in the linuxcnc tp (I dont think so, its a layer below): http://wiki.linuxcnc.org/cgi-bin/wiki.pl?CubicInterpolator
[19:30:56] <thrile> nah, iirc, cubic is the way to go due to less jerk through initial acceleration.
[19:31:44] <thrile> I'm just trying to understand parabolic blends and their trapezoidal profilesm, cubic blends need probably even more calculus
[19:32:56] <mhaberler> well the wiki is a tad short on theory - adding any relevant literture finds here would really help http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Whitepapers_For_Reference
[19:38:52] <thrile> yeah.. so off to learning calculus I guess
[19:39:08] <thrile> meh, I always knew somehow I'd need it
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[20:07:53] <kwallace> Does anyone have a favorite internal threading insert and holder for turning aluminum? I would like to get in close to the inside face so the insert can't stick out much after the point. A common pitch will be 32TPI.
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[20:29:34] <JT-Shop> kwallace: there are two basic types, the single point and the full form. the single point covers a range and the full form does one pitch per insert
[20:30:25] <JT-Shop> the ones I use look like a triangle insert with one thread shape on each edge
[20:31:33] <kwallace> I would be more interested in the single point like this one:http://littlemachineshop.com/products/product_view.php?ProductID=3695&category=-765769359
[20:32:07] <kwallace> But as Gene would say, "They are mighty proud of it."
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[20:33:01] <JT-Shop> strange design with laydown on one end and on-edge on the other end
[20:33:33] <JT-Shop> ah I see now it is reversable for OD and ID threading
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[20:37:28] <kwallace> I recall there are triangular inserts that lie flat with a tooth profile on each tip. Ahh.. like this: http://www.carmex.com/page.php?actions=show&id=113&instance_id=4
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[20:39:09] <JT-Shop> that's what I use as the grooving and boring inserts fit the same holder
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[20:43:40] <tjb1> JT-Shop: The G540 should be back today :)
[20:44:34] <kwallace> Do you have any hints on what to search to find the inserts you use? I suppose the basic triangular form has a designation?
[20:49:58] <JT-Shop> mine is a Seco SNR 00050 55-11 Snap Tap holder and 11NRA60-A1 CP300 insert for 48-16TPI
[20:50:09] <rob_h> always grind up a tap to make a threading tool if its not too big ;) i always find the uncoated Kgrades to work best on Alli for threading
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[20:51:20] * JT-Shop waves at rob_h
[20:51:28] <rob_h> hello over there
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[20:55:44] <rob_h> always this type system that alot of people make ideal for small part/bores http://www.vargusuk.co.uk/vardex/template/default.aspx?pCatId=7&pageId=5
[20:56:11] <rob_h> or there is this type, grate for grooving and threading on same tool, horn make one too, so do others, http://www.sandvik.coromant.com/en-gb/products/corocut_MB/Pages/default.aspx
[20:56:12] <kwallace> rob_h: I just caught on to what you mean. Just grind away all but one tooth of the tap.
[20:56:40] <rob_h> yea sure plenty places on net explane show better than what i could
[20:57:04] <rob_h> sometimes getting threading bars or holders into places is not ideal
[21:00:53] <kwallace> I would hate to "ruin" a perfectly good tap, but they are a lot cheaper than an insert and matching bar. I have blank HSS tools, but I don't look forward to grinding most of the tool away.
[21:02:45] <rob_h> yea blanks aint too cheap now days ether
[21:09:28] <tjb1> Anyone here running a d525mw box?
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[21:12:31] <r00t4rd3d> no
[21:12:50] <rob_h> any one done a powertooled lathe with C axis
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[21:40:43] <Connor> tjb1: Is a very common board to use.. yes. I have 1 and the 1.6ghz vsersion, both running linuxcnc.
[21:40:54] <tjb1> Can you recommend a good case?
[21:40:57] <tjb1> http://www.newegg.com/Product/Product.aspx?Item=N82E16811154091
[21:41:00] <tjb1> Looking at that one
[21:41:25] <Connor> That's the exact one I used for the 1.6Ghz version.. very nice case.
[21:41:27] <Connor> No complaines.
[21:41:36] <Tom_itx> i have that case as well
[21:41:39] <Tom_itx> and like it
[21:41:54] <Tom_itx> only i paid less for it
[21:41:56] <tjb1> The reviews are hard to use at newegg
[21:42:01] <tjb1> Lots of bad it seems for all the cases
[21:42:14] <tjb1> Do I need another fan?
[21:42:20] <Connor> No.
[21:42:29] <Tom_itx> it's got a psu and fan in it
[21:42:34] <Tom_itx> i didn't use an extra fan
[21:42:45] <Tom_itx> i did mount a 2.5" drive on the side
[21:43:32] <Connor> I'm not sure what the bad reviews are about.. but.. It's a very nice case.
[21:43:44] <Connor> Also remember.. people tend to bitch more about bad stuff than good stuff.
[21:44:14] <Connor> and I hate when people flag a product bad review for "Shipping" issues..
[21:44:39] <tjb1> Can you install linuxcnc over usb
[21:44:53] <Connor> I used a USB CDROM to do the install..
[21:44:56] <Tom_itx> i used a thumbdrive on one
[21:45:01] <Connor> not sure if you can install it from a thumbdrive..
[21:45:08] <Connor> never tried it.
[21:45:45] <tjb1> So it works Tom_itx ?
[21:46:00] <tjb1> Or is there some special voodoo I have to do to make it installable?
[21:46:05] <Tom_itx> it's been a while but i did it
[21:46:17] <Connor> Make sure if your using a 2.5" Drive, you get a adapter kit for 3.5"
[21:46:20] <Tom_itx> yeah there's something you run.. i forget just what
[21:46:36] <Tom_itx> Connor, what for?
[21:46:50] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/intel_atom/detail/DSC_0008.JPG
[21:46:54] <Tom_itx> i put it on the side
[21:46:56] <Connor> My SSD HD I had.. was 2.5" But came with 3.5" brackets
[21:47:23] <tjb1> Hmm
[21:47:24] <Tom_itx> i didn't shrink those pics..
[21:47:30] <tjb1> I have a few 2.5 HDD
[21:47:31] <Connor> I can tell.
[21:47:45] <Tom_itx> Jymmm wanted to see the case so i took em in a hurry
[21:48:13] <Connor> tjb1: Do they have 2.5 to 3.5 adapter plates?
[21:48:38] <tjb1> No, ill just get some from newegg
[21:49:02] <Tom_itx> get an L end on one of the sata cables
[21:49:05] <Tom_itx> it's alot handier
[21:49:15] <Tom_itx> but a regular one will fit
[21:50:11] <Connor> I *DID* put a fan in mine.. only because it was inside of my router which is very stuffy.
[21:50:12] <DJ9DJ> gn8
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[21:51:15] <Connor> http://www.ivdc.com/cnc/cnc8.jpg
[21:51:20] <tjb1> You need to buy the sata cable?
[21:51:30] <Connor> it's in the cubby on the left.
[21:51:35] <Connor> I think the mobo comes with a SATA.
[21:51:52] <Connor> http://www.ivdc.com/cnc/cnc13.JPG
[21:51:59] <Connor> all closed up..
[21:52:53] <tjb1> What do I need to search to find these damn adapters
[21:53:29] <Connor> http://www.newegg.com/Product/Product.aspx?Item=N82E16811990004
[21:53:41] <Connor> http://www.newegg.com/Product/Product.aspx?Item=N82E16811993005
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[21:54:35] <tjb1> Well the first one is cheaper
[21:54:50] <tjb1> I have a 4gb ram stick at home out of new laptop
[21:54:53] <Connor> I was throwing up examples of what I found.
[21:55:03] <tjb1> I couldnt find anything except power adapters
[21:55:51] <Connor> http://www.newegg.com/Product/Product.aspx?Item=N82E16817996040
[21:56:06] <Connor> http://www.newegg.com/Product/Product.aspx?Item=N82E16817812011
[21:57:09] <tjb1> I like that first one
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[21:57:50] <Connor> I got a SSD HD for my install... it came with a adapter.
[21:58:51] <tjb1> im looking at usb cd drives
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[22:05:12] <Jymmm> Tom_itx: Lies, all lies!!!
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[22:07:54] <tjb1> Connor: Would you know a cd drive that would fit in it?
[22:10:26] <Connor> Just about any would.. just be sure to get a SATA.. But to be honest.. I didn't bother...
[22:10:49] <Connor> You shouldn't need it except for the initial load.
[22:12:08] <Connor> https://help.ubuntu.com/community/Installation/FromUSBStick
[22:12:16] <Connor> follow that, should work for the linuxcnc iso too
[22:13:00] <tjb1> alright
[22:13:09] <kwallace> I've used common USB thumb drives for new installs. UNetbootin or Start Up Disk Creator can put the disk image on the drive. Google for details.
[22:14:20] <tjb1> And Connor, one more…will this type of RAM fit the d525mw? DDR3 PC3-10600
[22:14:32] <Connor> One sec. on phone.
[22:15:10] <kwallace> https://help.ubuntu.com/community/USB%20Installation%20Media
[22:16:48] <Connor> http://www.newegg.com/Product/Product.aspx?Item=N82E16820139220
[22:16:54] <Connor> I got two sticks of that.
[22:17:51] <Connor> HAS to be the 204-Pin SO-DIMM style
[22:18:44] <Connor> you using p-port or mesa ?
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[22:19:17] <Mr_Wolfsl> Hi
[22:19:28] <Connor> if par-port, go ahead and grab a PCI one.. just to make life a little easier.. http://www.newegg.com/Product/Product.aspx?Item=N82E16815104231
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[22:19:48] <Connor> I know you can use the onboard.. but, this adds a tiny amount of extra protection, plus gives you more I/O
[22:22:03] <Mr_Wolfsl> I have tried the line knet axis.8.motor-pos-cmd axis.8motor-pos-fb in the .hal to loopback the tool length for the kinematics but it doesn't work
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[22:22:54] <Mr_Wolfsl> euh net not knet *
[22:23:44] <Mr_Wolfsl> anyone have an idea?
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[22:25:57] <tjb1> Parallel Connor
[22:26:08] <tjb1> That RAM is 204
[22:26:20] <tjb1> Its out of my new laptop and its a 4gb stick so I will use it if I can
[22:26:23] <Connor> Okay, then get that PCI par-port cord.. makes it a tad easier.
[22:26:39] <Connor> I don't think the board can see a 4GB stick..
[22:26:44] <Connor> let me look at the manual.
[22:26:53] <tjb1> I have a parport card
[22:27:04] <tjb1> For the expansion slot
[22:27:16] <tjb1> plus the board has one built in right?
[22:27:23] <Connor> correct
[22:27:38] <tjb1> Well I will just use those 2 together
[22:27:55] <tjb1> If it can read a 4gb card, ill be ordering now :)
[22:28:19] <Connor> nope. 1GB or 2GB sticks..
[22:28:23] <Connor> http://downloadmirror.intel.com/19123/eng/d525mw_d525mwv_techprodspec.pdf
[22:28:26] <Connor> page 16
[22:28:33] <tjb1> Ah, damn
[22:28:34] <Connor> but the memory is CHEAP
[22:28:37] <tjb1> So 2- 2gb
[22:28:40] <Connor> $24.00 for the two sticks.
[22:29:13] <Connor> Now, that's DOCUMENTED. You could try it with your 4Gb stick.. but.. I make NO promise. :)
[22:29:14] <tjb1> I got a 500gb - 7200rpm seagate that was in my macbook pro when I got it
[22:29:29] <tjb1> Well I only paid $42 for 2-4gb cards from crucial
[22:30:49] <kwallace> I run LinuxCNC on 1GB just fine. My guess is 2GB or more wouldn't help.
[22:31:15] <Connor> Doesn't hurt either. :)
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[22:31:32] <Connor> and I've been known to browse the web and run chat on my CNC machine while working..
[22:31:54] <tjb1> Mine will be plasma only so I will just grab 2gb
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[22:38:30] <tjb1> Thanks for your help Connor
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[22:53:13] <Connor> tjb1: No Problem.
[22:53:32] <Connor> Okay, so, do I want a Fast or slow fuses for my speed controller (on the AC Side)
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[23:21:21] <r00t4rd3d> the 525mw can see 4gb memory chips
[23:21:35] <r00t4rd3d> you can put 8gb in it even though the manual only says 4gb
[23:22:00] <Connor> Really ?
[23:22:06] <Jymmm> but you can't use cheap ram iirc
[23:22:18] <Jymmm> cheap == crap ram
[23:22:20] <Connor> I just got with what the manual says..
[23:22:25] <Connor> better off.
[23:22:50] <Connor> Okay, WTF do people do to keep their shops organized.. I'm about to go nutz trying to figure out what to do with mine!
[23:23:17] <Connor> I end up with all sorts of odd-and-ends of screws, nuts.. power connectors...
[23:23:21] <Connor> etc etc
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[23:27:00] <r00t4rd3d> http://www.crucial.com/store/partspecs.aspx?IMODULE=CT2KIT51264BF1339
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[23:30:11] <r00t4rd3d> then this for OS
[23:30:12] <r00t4rd3d> http://www.ebay.com/itm/160946035386?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
[23:30:19] <r00t4rd3d> zoooom!
[23:31:16] <r00t4rd3d> http://www.amazon.com/Embedded-PARTS-QUICK-Mini-ITX-industrial-motherboards/dp/B00724HO9W
[23:31:22] <r00t4rd3d> that one is slightly better
[23:32:28] <r00t4rd3d> ubuntu would boot very fast with 8gb mem/usb-ssd
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[23:47:21] <Valen> get a bunch of chinese food containers and make shelving
[23:47:36] <Valen> alternatly look at the back wall of M5 in mythbusters
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