#linuxcnc | Logs for 2012-03-18

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[09:53:44] <Loetmichel> DJ9DJ: bah! early wakeup guys... i hate it... [mode: shout] "WIIIFFEEEE!!!! COFFEEEEE!!!!!!1111oneeleven" [/mode]
[09:54:00] <DJ9DJ> lol
[09:54:04] <DJ9DJ> good morning Loetmichel
[09:54:06] <Loetmichel> mornin' everyone ;-)
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[12:33:06] <mrsun> hmm, when milling out pieces from flats, how the heck to make them not jump out and into the freakin end mill .... every time :P
[12:33:19] <mrsun> always some kind of damage on the pieces :(
[12:33:46] <jthornton> you mean a profile cut of a part?
[12:34:02] <mrsun> yes
[12:34:19] <jthornton> no holes to hold the part down?
[12:34:43] <mrsun> i guess i could do that after it has milled the holes, but then i would have to make a fixture for it all =)
[12:34:48] <jthornton> yep
[12:34:50] <mrsun> so the holes are in good places
[12:35:16] <jthornton> or mill all but some tabs then clamp it down and mill the tabs out
[12:35:27] <Farthen> can't you just use adhesive tape to stick it down?
[12:35:46] <mrsun> i guess that would work also
[12:35:59] <mrsun> as the forces arent very great at that last cut part
[12:36:38] <Farthen> i do that sometimes and it works pretty well
[12:37:28] <Farthen> and if you chose the right tape (the ones for carpets work very good) it should be pretty strong, too
[12:37:52] <mrsun> the double sided i have is pretty damn strong =)
[12:39:03] <jthornton> what's the ideal serving temperature for an ale?
[12:39:06] <Farthen> yeah, just be careful to not have any bumps on the tape when sticking it :P
[12:39:46] <mrsun> Farthen, hehe, its not high precision parts, they are adjustable so i can have very low precision when making them and the machine they go on :P
[12:40:03] <mrsun> and throught hole stuff almost everywhere except a pocket that has kinda close tolerances =)
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[12:40:18] <Farthen> ah, perfect, that makes adhesive tape even more suitable
[12:41:09] <mrsun> just need to either cast and face some 10mm alu or buy 10mm alu ... for 16 of these parts
[12:41:42] <mrsun> no 12 of them! :P
[12:42:07] <mrsun> if i could get 4 out of one piece on the mill it would be good =)
[12:42:11] <Farthen> what are you making?
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[12:42:39] <mrsun> http://i41.tinypic.com/wkkdo5.png <-- for wood working machine
[12:42:46] <mrsun> linear rollers
[12:42:59] <Farthen> ah, i see
[12:43:10] <Farthen> one machine to feed the other… i like those things :p
[12:43:17] <mrsun> Farthen, yes =)
[12:43:25] <mrsun> bought one, build the rest :P
[12:43:38] <mrsun> bought one and converted it ... ,that is
[12:46:57] <mrsun> it has been damn expensive to try and tool up from having nothing tho =)
[12:47:14] <mrsun> and then a wood working machine, ofc only thing that requires realy is alot of wood working cutters
[12:47:23] <mrsun> compared to the mill with dial indicators etc etc
[12:47:26] <Farthen> yeah, sure
[12:48:41] <Farthen> and also it is fact that you can't machine a piece for a high precision machine with a low precision one :p
[12:49:24] <Jymmm> why not
[12:49:24] <jthornton> which part are you making?
[12:49:38] <mrsun> jthornton, me ?
[12:49:41] <jthornton> I don't know why not
[12:49:45] <jthornton> yea
[12:49:47] <mrsun> the blog with 4 slots and the one with 2 slots
[12:49:59] <mrsun> rest is just sketched there for reference to how it would fit a 30x30mm profile
[12:50:04] <mrsun> with skate bearings
[12:50:19] <jthornton> ah ok makes sense now
[12:50:54] <mrsun> =)
[12:51:17] <jthornton> another trick I have used is to mill most of the profile then clamp the two parts together while milling the tabs off
[12:52:33] <Jymmm> mrsun: how are you going to keep the bearings from rising off the guiderail?
[12:52:48] <mrsun> Jymmm, 2 blocks, one from the underside also
[12:53:05] <Jymmm> mrsun: rectangular rail?
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[12:53:13] <mrsun> Jymmm, huh ? :)
[12:53:24] <mrsun> the <> part is the guide rail
[12:53:24] <Jymmm> mrsun: rectangular rail?
[12:53:33] <mrsun> Jymmm, square
[12:53:52] <Jymmm> ular on a 45deg, same diff
[12:54:08] <mrsun> "ular"? :)
[12:55:00] <Jymmm> you're gonna have a hell of a time adjusting then tensionand alignment
[12:55:33] <mrsun> Jymmm, yeah im sure :/
[12:55:55] <Jymmm> that's a LOT of surface contact as well.
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[12:56:06] <mrsun> Jymmm, not good? :)
[12:56:27] <mrsun> figured as it was roller bearings it wouldnt mater if i had alot of surface contact =)
[12:56:48] <Jymmm> Well, a PITA when I tried it. You might consider a HEX rod and only a third "spring loaded" bearing
[12:57:54] <mrsun> how would a hex rod work better? :)
[12:57:59] <Jymmm> or even a round rail.
[12:58:01] <mrsun> i could use round rails with it also
[12:58:10] <mrsun> would work the same but very small contact area
[12:58:22] <Jymmm> right, and less resistance
[12:58:26] <mrsun> but then it might be a bit smaller
[12:58:30] <mrsun> bit small
[12:58:31] <mrsun> *
[12:58:42] <mrsun> cant fit very large rounds in that little gap =)
[12:58:58] <Jymmm> so, look at HEX,
[12:59:21] <mrsun> Jymmm, but wouldnt hex become the same thing except the sides would be flat? :P
[12:59:43] <jthornton> no, hex would be more expensive
[12:59:51] <mrsun> and the degrees of hex wouldnt be 90 ? would only have a small rim of the bearings pushing against the rail, i was going for some kind of rigidity also =)
[12:59:58] <Jymmm> You only need to keep it from rising up.
[13:00:08] <Jymmm> 120degre iirc
[13:00:12] <mrsun> i figured 2 30x30mm square pipes with support blocks between them
[13:00:50] <Jymmm> mrsun: Well, just consider how you want to tension it before you start buying/fabricating material
[13:01:14] <mrsun> Jymmm, im going to try them out a bit before i start the build of the actual mill yes =)
[13:01:18] <mrsun> trying out concepts atm =)
[13:01:44] <Jymmm> and wear grooves the bearings will cause as well
[13:02:09] <Jymmm> Less surface contact == more fudge factor
[13:02:10] <mrsun> that is a very valid point...
[13:02:18] <mrsun> and what is fudge factor? :)
[13:02:45] <Jymmm> A Good Thing (tm)
[13:05:09] <mrsun> 22mm pipe is the biggest i can fit with this bearing layout
[13:05:35] <mrsun> that is round
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[13:07:00] <raynerd> Hello, can someone please tell me what an estop actually is!!
[13:07:07] <mrsun> emergency stop ? :)
[13:07:11] <raynerd> I read about it a lot, but don`t fully understand
[13:07:23] <Jymmm> mrsun: I used 10-32 SS screws like this as the head would align the bearing perfectly and a flat washer to raise it of the mount http://topkayaker.net/TopKayakerShop/images/medium/WSW-HMP-1032SS125_MED.jpg
[13:07:26] <mrsun> should halt just about everything dead in its tracks
[13:07:27] <raynerd> yes, but where is it placed... like limit switches are tripped by the table
[13:07:39] <mrsun> raynerd, its tripped by you, the operator
[13:07:40] <raynerd> so it is just a manually operated kill switch
[13:07:55] <raynerd> I see! That does make sense and I presumed that was the case.
[13:08:44] <Jymmm> raynerd: http://image.shutterstock.com/display_pic_with_logo/304699/304699,1242238639,2/stock-photo-emergency-stop-button-on-a-white-background-30190750.jpg
[13:09:13] <mazafaka> 3 drunk idiots wanted something form me at work (about 19:30). Tomorrow I will have a talk with them sequently, except one meybe, whom I know.
[13:09:36] <Jymmm> mazafaka: Is it sex?
[13:09:46] <mazafaka> Jymmm: it's a fight
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[13:10:03] <Jymmm> mazafaka: Lovely
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[13:11:21] <mazafaka> i was near my cnc when thry have come and the one I knew startyed to say 'Whatn are you doing for the one whom I was stiffling/dissuade
[13:11:59] <mazafaka> they will be sane tommorow morning and nevertheless will have got they stuff
[13:12:18] <Jymmm> stiffling?
[13:12:33] <mazafaka> just a sort of a clamp or a hug
[13:12:40] <Jymmm> k
[13:12:58] <mazafaka> 'k' ??
[13:13:02] <Jymmm> ok
[13:14:09] <mazafaka> idiots want something from me! And I am an intellectual one, simultaneouesly
[13:14:13] <Jymmm> If you were drunk and working in a machien shop, I'd get you fired.
[13:15:05] <mazafaka> it's already decided that all were drunk, becaus eit's common in Russia to add e.g. solvent into a coffee teapoit
[13:15:25] <Jymmm> WTF?!
[13:15:58] <mazafaka> I wonder how will they act when they are not drunk, because I'm sane when I am drunk untill I fall adeath onto the bed
[13:15:59] <Jymmm> Add Syrup of Ipacac to the tea pot!
[13:16:12] <mazafaka> 'Ipacac' ??
[13:16:30] <Jymmm> It makes you vomit
[13:16:46] <Jymmm> Syrup of Ipacac
[13:16:51] <frysteev_> ola
[13:16:53] <mazafaka> I acted like an idiot maybe, asked the guard of the plant we will have told the same, and gwent home
[13:17:22] <mazafaka> What is Ipacac?
[13:17:56] <Jymmm> mazafaka: "Syrup of Ipacac" == Makes you VOMIT. Can get from pharmacy
[13:18:18] <mazafaka> Why do I need one, I am already at home.
[13:18:49] <Jymmm> mazafaka: for THEIR teapot. http://en.wikipedia.org/wiki/Syrup_of_ipecac
[13:19:07] <mazafaka> like in the 'Formula 51' ?? :)
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[13:20:45] <mazafaka> Heh, they will not be drunk in the morning, and I will at first time arrange such a stuff since the school's time when I was considered as the one 'having a backbone broken'. Could be funny.
[13:22:08] <mazafaka> I can hurt one and be cool at the same time! :)
[13:22:42] <mazafaka> three in a row equals to a 'band' or 'crew'...
[13:29:18] <mazafaka> When twelve people attack you (at winter, on icy road), it's worse. Thry're drunk but somehow or anyhow some of them move around. When these three attacked, I have got back to the guard and said three drunk idiots attack me. It will be easy to talk to them tomorrow. We decide to go home and I decided they will hhave heard of me again later.
[13:30:48] <mazafaka> Such a CNC-applied theme, heh. Smart people have to protect their lifestyle with what they get from this lifestyle.
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[13:37:20] <mazafaka> one another time, 'do not let anyone anyhow make you drink with them or sit with them'. They depend on they mothers-at-law and such and you do simply do not need to have a relation to what they have in thry soul as a 'bad wealth'.
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[14:18:15] <mrsun> hmm, 2x 22x2mm round pipes on each side with support bracers between them and bolted to the table of the mill, should be rigid enough i guess =)
[14:20:02] <Jymmm> mrsun: And when you get done playing with skate bearings, you can buy linear rails like eveyone else.
[14:20:26] <mrsun> Jymmm, yes, but its expensive like hell :(
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[14:21:12] <mrsun> hell just the shipping of 1 rail to sweden costs more then this setup in its whole
[14:21:51] <Jymmm> ah
[14:22:32] <mrsun> sweden sucks as a country to try and get stuff in ... buy it fromw ithin sweden, pay 3 - 10x the price from china or something, buy it from china, get shipping that is 2x the price of the item
[14:23:19] <mrsun> then when it gets here and its big stuff, you get * 1.33~ about ont he price you payed + another shipping from within sweden
[14:23:33] <Jymmm> Just use drawer slides then, you guys have all that assembled furniture, they should be cheap enough =)
[14:23:51] <mrsun> hmm or wait that was wrong ... if something costs 1000sek to buy you get to pay another 330sek on araival + another shipping
[14:24:18] <mrsun> taxed to death in this country
[14:24:52] <Jymmm> mrsun: Here ya go... a house that you can have shipped to you... http://www.dailymail.co.uk/news/article-2108775/Ikea-launches-80-000-flat-pack-DIY-house.html
[14:25:24] <mrsun> haha =)
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[14:27:28] <mrsun> gonna try and design it so a transition to linear bearings wouldnt be to hard, i want the lm guide stuff =)
[14:27:58] <frysteev_> moo
[14:28:09] <mrsun> tho i dont realy care as it will be quite small a machine, when im building the full size (2440x1200mm work area) i will have money enough to buy real stuff :P
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[14:32:54] <mrsun> 1000 sek for the frame of the machine and the guide pipes, + 480sek shipment tho, not to bad =)
[14:33:09] <mrsun> (1500x1000mm frame)
[15:00:25] <ssi> I'm at a loss
[15:04:39] <elmo40> ssi: on what?
[15:04:46] <ssi> what to do next
[15:05:27] <elmo40> well, where are you at? what has been accomplished?
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[15:06:02] <ssi> starting to wire mesa gear to the machine
[15:06:13] <ssi> started with resolvers, but I'm stuck there for various reasons
[15:06:50] <ssi> not sure there's much sense in trying to hook up PWM to drive the servo amps until I have position feedback
[15:07:42] <elmo40> I was wondering if the parport is enough to use the input from an MPG, of if I need another board
[15:07:49] <ssi> I need to address all the limit switches and interlocks, get spindle drive and hi/low clutches going, get coolant pump control working, collet open/close
[15:07:54] <ssi> what else... oh yea toolchange turret
[15:08:22] <elmo40> tool changers, gotta love them :)
[15:08:54] <ssi> I would like to talk to some of the other folks that have converted this lathe about how they did their turret control
[15:09:03] <ssi> cause I'm not real comfortable yet with how the thing actually works
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[15:47:00] <frysteev_> moo
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[15:58:15] <emcuser> Hi folks! I'm trying to set up a MaxNC machine from 2003, and with everything connected my motors are just making noise without moving. Do you have any suggestions?
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[16:10:07] <emcuser> How do I specify a bipolar stepper motor?
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[16:22:20] <archivist> how are you driving the motor
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[16:40:20] <emcuser> It is driven by a control unit that came with the machine.
[16:42:11] <archivist> then step dir, you done specify bipolar/unipolar
[16:42:16] <archivist> dont
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[17:18:54] <emcuser> Ok, that makes sense. Could it be the controller that is not working?
[17:19:32] <archivist> you have not given us any clue to know :)
[17:20:25] <archivist> more like you have not enabled it or not given it a watchdog signal
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[17:26:07] <ssi> hrm
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[18:04:09] <emcuser> watchdog signal?
[18:04:52] <emcuser> archivist: You have to excuse me, I'm really all new to CNC. I'm setting up this machine for the first time.
[18:05:32] <archivist> also known as charge pump
[18:05:56] <archivist> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?About_Charge_Pumps
[18:15:56] <Loetmichel> emcuser: which Stepper driver do you have?
[18:16:22] <Loetmichel> any Numbers /manufactueres on it?
[18:18:46] <emcuser> Loetmichel: The only info is the imprint "MaxNC10"
[18:20:01] <Loetmichel> http://www.positiveflow.com/maxnc1.htm
[18:20:03] <Loetmichel> this one?
[18:20:29] <Loetmichel> looks like it is driven directly with gcode
[18:20:45] <emcuser> Not the exact same mill, but it looks very similar.
[18:21:33] <emcuser> The controller we have has a printer parallell port as input and only three 5-pin outputs for the stepper motors.
[18:21:55] <Loetmichel> hmm.
[18:21:57] <Loetmichel> 5pin?
[18:22:06] <Loetmichel> one pin PE?
[18:22:47] <Loetmichel> (protection earth, mostly green or green/yellow striped wire)
[18:23:12] <Loetmichel> Do you have any photo of the controller board?
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[18:23:30] <Loetmichel> preferably Hi-res and both sides?
[18:25:57] <emcuser> no, I'm afraid I don't
[18:26:22] <emcuser> I think there is 1 pin per manget + earth
[18:27:23] <emcuser> This looks more like the mill we have: http://www.isptechcorp.com/images/img12_maxnc_10_OL.jpg
[18:28:29] <archivist> do you have any manual showing the connections on the 25 way port
[18:28:48] <Loetmichel> emcuser: the problem is: until we know the pinout at the parallelport we cant suiggest hwo to configure EMC2^W linuxcnc
[18:29:42] <Loetmichel> and if you have some photos of the board maybe one of us recognizes it or we are able to trace the PCB to know which pin does what
[18:30:35] <emcuser> I see. I don't have the mill / board here with me, but I can try to get some pictures of the board. We opened it up today to see if we could figure it out but without any luck.
[18:31:19] <emcuser> archivist: No, that's another problem. I wish we had. We ended up trying the different default setups in LinuxCNC without luck.
[18:31:45] <IchGuckLive> emcuser: simular to proxxon mill
[18:32:28] <Loetmichel> IchGuckLive: that helps not to gain knowledge on the pinout of the lpt port
[18:32:54] <IchGuckLive> the bord that is mounted on the mashine is not compatible with emc
[18:33:19] <IchGuckLive> it uses a internel language no pinlayout as parport
[18:33:29] <IchGuckLive> the mashine takes full bit pattern
[18:34:47] <IchGuckLive> i did a replace with a standart §D step for 35Euros here on mine
[18:35:36] <IchGuckLive> emcuser: did you open the case of the driver
[18:35:51] <IchGuckLive> does it say FP800 or 1000
[18:36:03] <Thetawaves> coolant system for my engraving machine is almost finished
[18:36:33] <IchGuckLive> Thetawaves: watertight O.o
[18:36:53] <IchGuckLive> or only airprice
[18:36:56] <Thetawaves> i'm using pure canola oil
[18:37:08] <Thetawaves> so oiltight
[18:37:15] <IchGuckLive> that is a smell
[18:37:28] <IchGuckLive> you will be impressed
[18:37:32] <emcuser> IchGuckLive: I don't recall reading neither FP800 nor 1000
[18:37:52] <IchGuckLive> what does it say then emcuser
[18:38:03] <Thetawaves> they also had peanut oil too for quite a bit more
[18:38:20] <Loetmichel> canola oil? wahts that?
[18:38:28] <Thetawaves> modified rapeseed oil
[18:38:32] <Loetmichel> ah
[18:38:32] <emcuser> IchGuckLive: I don't have the board with me right now. I can check that the next time ;)
[18:38:37] <Thetawaves> canadian oil, actually
[18:38:50] <emcuser> By the way, do any of you recognize this part? We wondered about what it was for: http://hans-w.com/maxnc_factory_supplied_motor_control.jpg
[18:38:54] <Loetmichel> Thetawaves: did that out of sheer desperation lately
[18:38:57] <IchGuckLive> emcuser: where are you located in the world
[18:39:06] <Loetmichel> but with kitzchen rapeseed oil
[18:39:24] <Thetawaves> Loetmichel, my machine is in the middle of my living room, go between laying around and watching tv to making chips
[18:39:34] <Thetawaves> Loetmichel, very important to have nontoxic cutting fluid
[18:39:35] <Loetmichel> milling is ok, great surface, but the oilk ist hardening like wood oil
[18:40:04] <Loetmichel> and it does that in 2 days
[18:40:10] <Thetawaves> huh!
[18:40:18] <Loetmichel> so i hat a little fun cleaning my machine ;-)
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[18:41:11] <Thetawaves> Loetmichel, do you know why it was gumming up?
[18:41:23] <Thetawaves> exposure to air?
[18:41:27] <Loetmichel> Thetawaves: mine is in the kids room (no kids so i had occupied it as workshop)
[18:41:39] <Loetmichel> its hardening with O2
[18:41:41] <IchGuckLive> emcuser: witch country are you from
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[18:42:08] <Thetawaves> Loetmichel, thought about adding soap or anything like that
[18:42:39] <Loetmichel> like the lineseed oil one uses to shine wood
[18:42:54] <Loetmichel> Thetawaves: would not helb
[18:42:57] <Loetmichel> help
[18:43:13] <emcuser> IchGuckLive: Norway
[18:43:37] <Loetmichel> better to use a vegetable oil which does not harden at all (sunflower for example, if i remember correctly)
[18:43:57] <IchGuckLive> emcuser: let me have a look
[18:45:24] <Thetawaves> Loetmichel, i didn't know *any* oil hardens with exposure to air
[18:45:27] <IchGuckLive> emcuser: http://search.eim.ebay.no/?ev=&kw=tb6560&ect=&elc=3&ec=&eb=S%C3%B8k
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[18:45:49] <Thetawaves> Loetmichel, this bottle of canola sitting in my cabinet for a year seems to disagree with you
[18:46:07] <Loetmichel> Thetawaves: what do you think happens when you "oil" a pieche of wooden furniture?
[18:46:16] <Loetmichel> piece
[18:46:30] <Thetawaves> the wood soaks up the oil
[18:46:49] <Loetmichel> the (mostly lineseed) oil oxidizes and hardenes, its like a soft plastic afterwards
[18:46:57] <emcuser> IchGuckLive: Thanks! If we can't get this board up and running I'll consider going with a board like that.
[18:47:05] <Loetmichel> same process for original oil colors for painting
[18:47:28] <IchGuckLive> you need the 2.5A Version not the 3A that is realy importend
[18:47:44] <emcuser> Why?
[18:48:10] <IchGuckLive> cause your steppers look like 1,25A
[18:48:15] <Loetmichel> emcuser: because the 3A version of the TB6560-boards cant be dailed down below 1,5A
[18:48:22] <IchGuckLive> standard nema24
[18:48:25] <Loetmichel> if your motors need less they will overheat
[18:48:33] <emcuser> Ah, ok. Thanks :)
[18:48:36] <Loetmichel> dialed
[18:49:17] <IchGuckLive> emcuser: why does norway ebay not list hongkong
[18:49:38] <Thetawaves> Loetmichel, so what should i do?
[18:50:14] <Loetmichel> thetawaves: google for "non-hadening vegetable oil"
[18:50:20] <Loetmichel> like i do atm ;-)
[18:50:23] <Loetmichel> +r
[18:50:53] <IchGuckLive> emcuser: there are deals around 38Euros 300 Nr Kr
[18:51:23] <IchGuckLive> emcuser: including fat and shipping
[18:52:14] <Thetawaves> Loetmichel, hydrogenation seems to be caused by hydrogen, not oxygen
[18:52:35] <Loetmichel> i read oxygenation
[18:52:48] <Loetmichel> but i am no chemical master ;-)
[18:52:50] <IchGuckLive> hydrogenation water power generators ?
[18:53:09] <IchGuckLive> B) O.O
[18:53:51] <Thetawaves> An oil may be hydrogenated to increase resistance to rancidity (oxidation) or to change its physical characteristics.
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[19:01:29] <Thetawaves> Instead, use a non-hardening oil such as grape seed oil, peanut, almond, or olive oil.
[19:01:39] <Thetawaves> i should have fucking got that peanut oil
[19:02:49] <emcuser> What about the HobbyCNC boards. Are they any good?
[19:03:44] <IchGuckLive> emcuser: i got 26 education mashines running on the TB6560 and thay work well for the minimal price
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[19:04:35] <emcuser> IchGuckLive: Is the TB6560 directly supported in LinuxCNC?
[19:05:01] <IchGuckLive> it is as fast as a Gecko 540
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[19:05:32] <IchGuckLive> emcuser: al standart parport modulels are supported
[19:06:15] <IchGuckLive> BY the Way @ all someone has a DSC810 running ?
[19:06:57] <IchGuckLive> this is half the price of Gecko320 and the new version seams to work propper at 48V
[19:08:28] <emcuser> I've got to go, but thank you all for the info :)
[19:08:37] <IchGuckLive> emcuser: first try to find out some more about your mounted driver so we can help you
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[19:09:37] <emcuser> I will :)
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[19:11:11] <IchGuckLive> i wish all of you a nice sunday by for me also !
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[19:13:10] <Thetawaves> Loetmichel,
[19:13:11] <Thetawaves> Vegetable oils, such as olive oil, corn oil, peanut oil (despite the nut name it appears to behave like a vegetable oil), all have a much greater susceptibility to oxidation. They also are essentially completely non-hardening, or only so slowly that one can find roman era hardened oil, but not within a couple of years.
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[19:14:04] <Loetmichel> Thetawaves: then get peanut butter^w oil ;-)
[19:14:25] <Thetawaves> Loetmichel, costco sells a 35lb jug of it for 50$
[19:14:34] <Loetmichel> hmmm, i have olive oil in the kitchen... maybe i should snatch some...
[19:15:11] <Loetmichel> but atm i have enough real cooling fluid handy
[19:15:22] <Thetawaves> (i know since i saw it when i bought a 35lb jug of canola oil yesterday. fuuu)
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[19:17:03] <pcw> I learned about vegetable oil oxidation a long time ago when I used a refrigerator compressor as an aquarium pump
[19:17:05] <pcw> and used (non toxic) corn oil, it slowly ground to a gummy mess after a couple weeks
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[19:18:58] <Thetawaves> pcw and corn oil is supposed to be one of those non-hardening ones :P
[19:19:39] <pcw> it worked really well for a few weeks...
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[19:20:41] <Thetawaves> i'm using a submersible pump, i wonder if that would create a low oxygen environment in the pump
[19:21:37] <raynerd> anyone know of a good link to a simple wiring diagram of 3 axis limit switches. I`m using a 3axis TB6560 cheapo driver and I think I`ve only got 4 inputs to play with.
[19:22:02] <cradek> you have all six limit switches?
[19:22:38] <raynerd> not yet...need to buy so need to look at wiring
[19:22:54] <raynerd> I currently own none
[19:23:22] <raynerd> I believe easiest way is to wire all in series..
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[19:55:26] <alex4nder> hey
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[20:10:43] <mrsun> http://www.youtube.com/watch?v=5ALJ7dzf_pc is it just me or does that machine feel like it realy lacks rigidity ? :P
[20:11:26] <alex4nder> yah, you shouldn't build a machine like that
[20:16:14] <archivist> ew, he will have problems
[20:17:53] <Thetawaves> ahhh, yeah an excellent example
[20:17:59] <Thetawaves> what would you guys do differently
[20:18:04] <archivist> I can imagine the cutter grabbing and twisting the router off the gantry
[20:18:35] <mrsun> way to long Z axis
[20:18:38] <mrsun> to high up for starters
[20:18:51] <mrsun> will vibrate like hell when cutting =)
[20:19:16] <archivist> there is a twisting moment along the gantry worst when spindle in the middle
[20:20:03] <Thetawaves> so there side profiles on the gantry should be deeper
[20:21:07] <Thetawaves> yeah a combination of deeper gantry walls, and lower z axis would make it much stronger
[20:22:59] <mrsun> and not having it offset from the gantry also
[20:22:59] <mrsun> first the guides are offset forward, then the spindle is even more offset forward
[20:23:00] <mrsun> the more in the middle the better i would say =)
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[20:23:44] <Thetawaves> its hard to think how more in the middle you could make it
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[20:24:22] <mrsun> move the pipe holding the spindle to the back of the "gantry stands" would make for a bit less X travel but the spindle would be more in the center of it all =)
[20:24:42] <mrsun> add more support on the back also =)
[20:25:47] <mrsun> or add more support under them on the frontside
[20:26:17] <mrsun> would make it more in the "middle" =)
[20:26:36] <mrsun> like archivist said the twisting action for the gantry will be quite great =)
[20:27:12] <mrsun> also i would thicken the pipe the X axis is on, by adding more support right behind the beam it sits on =)
[20:27:26] <mrsun> just my thoughts tho =)
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[20:27:39] <mrsun> and do you realy need to cut like 300mm thick pieces? :)
[20:27:51] <mrsun> is 100mm of cutting action enough ? ... shorten the Z height
[20:27:52] <Thetawaves> haha
[20:28:09] <Thetawaves> my machine only has 50mm :(
[20:28:18] <mrsun> quite enough imo =)
[20:28:23] <mrsun> for flat pieces
[20:28:34] <mrsun> worse if you are doing some big work, but if you are then use a real mill :P
[20:28:37] <Thetawaves> right, i will not be able to make large angled brackets
[20:29:08] <archivist> problem comes when you need to lift up enough for a drill chuck/whatever
[20:29:09] <Thetawaves> if only i had a real mill
[20:29:22] <mrsun> archivist, true =)
[20:29:41] <mrsun> my X1 is far to weak in the column also, when i mill high up fromt he table it vibrates like hell ...
[20:29:50] <archivist> mine is tall due to the stacked axes
[20:30:11] <archivist> I stiffened my column
[20:30:12] <mrsun> yeah tall isnt a problem if you beef up the supports i guess =)
[20:30:38] <mrsun> my column flexes alot, so i tend to want to mill as close to the table as possible
[20:30:51] <archivist> was unable to cut steel till I stiffened it
[20:31:24] <mrsun> i can cut steel fine by the table, but higher up i havent even dared to try as ive seen with the dial indicators how much it flexes with very little forces on the tool =)
[20:32:10] <mrsun> it made short work of a machine bolt last week, misscalculated my X Y positions, so it ran straight into the holding bolt, cut a very nice finnish on it and its very flat on the side now :P
[20:32:57] <mrsun> dont know how the end mill felt tho, isnt machine bolts hardened somewhat? :)
[20:34:45] <archivist> supposed to be hardened and tempered but was it a cheaper chinese one
[20:35:07] <mrsun> archivist, hehe nah its bought in sweden, but never know where they come from :P
[20:37:20] <mrsun> maybe not the best finnish i guess like of the real machines, but for a X1 i was quite impressed =)
[20:37:38] <mrsun> it was like it didnt even feel the bolt, just heard a strange noise .. when i looked well .. mayhem ;P
[20:40:40] <archivist> if cutting conditions are ok it will just plough through :)
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[21:09:11] <Jymmm> http://grist.org/list/scotts-miracle-gro-pleads-guilty-to-selling-poisoned-bird-seed/
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[21:18:25] <ssi> so anyone know anything about hall effect limit switches?
[21:18:50] <ssi> I think the machine originally fed them 25V, and I'm wondering if I can get by with 12v instead
[21:19:05] <alex4nder> that's a lot of voltage for hall effect anything
[21:19:12] <alex4nder> most sensors I've seen want like 8 volts.
[21:20:01] <ssi> now that I'm into this conversion, stuff is getting pretty tough
[21:20:12] <pcw> 24VDC is a standard control voltage for industrial electronics
[21:20:15] <ssi> I have more "wiring diagrams" than I do schematics, an dthe diagrams don't really go into detail about the signals
[21:20:35] <ssi> pcw: think it's likely that all the SSRs in the thing are 24v control?
[21:20:47] <ssi> pcw: and will they switch worth a crap on 12V or 5V?
[21:21:54] <ssi> (and for whatever, all the drawings call out a +25V, not +24V)
[21:29:21] <alex_joni> most industrial stuff I've seen is 24V
[21:29:46] <alex_joni> only exception have been motor brakes which are 25 to account for voltage drop (because of relative high currents)
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[21:44:29] <DJ9DJ> gn8
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[21:52:06] <pcw> I don't know about the SSRs but it should be something that can be determined by a part name search
[22:04:29] <ssi> the SSRs are being controlled with 12V
[22:04:30] <ssi> that'll help
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[22:06:43] <joe9> can someone please give me the list of urls from /etc/apt/sources.list?
[22:06:53] <joe9> of the linuxcnc cd?
[22:07:18] <joe9> i messed it up and i need it without rebooting, and my cd is already being used.
[22:08:59] phantone is now known as phantoxe
[22:16:44] <joe9> got it, don't bother. thanks.
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[22:47:27] <jdhnc> ok.
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[23:00:06] <alex4nder> hey
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[23:42:27] <mikebronner> hi guys, so I just got my CNC Router built and in a workable state (some final detail work is still outstanding, but that will wait for next week). I wanted to start entering my tools into EMC2 using the AXIS front-end, but I could find little documentation on editing the tool table. If anyone could give me some pointers where I might find documentation, that would be great (I'm a complete newb at this).
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[23:49:22] <Jymmm> mikebronner: http://www.linuxcnc.org/docs/2.5/html/gcode/tool_compensation.html
[23:50:13] <Jymmm> mikebronner: https://www.google.com/search?q=tool+table+site%3Alinuxcnc.org
[23:50:49] <mikebronner> thanks Jymmm, reading now :) trying to wrap my head around these concepts'
[23:50:59] <Jymmm> mikebronner: also might check https://www.google.com/search?q=tool+table+site%3Awiki.linuxcnc.org
[23:56:10] <mikebronner> still a bit confused, maybe my expectations were off. I have tools with various shapes (rounded, pointed 45 ^ angle, pointed 60^ angle). It appears that the tool table only accounts for flat bits?
[23:59:11] <jdhnc> it will allow you to use tool length and radius compensation, what else would you like?
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