#linuxcnc | Logs for 2012-07-08

[00:00:02] <linux-cnc-bob> i was hoping the gcode line "G10 L1 P20 R0.118" does that :)
[00:00:58] <Tom_itx> where does linuxcnc store the tool table?
[00:01:08] <Tom_itx> can you edit it outside the program?
[00:01:13] <WiillenCMdesign> yes
[00:01:32] <linux-cnc-bob> so cant edit it from gcode?
[00:01:33] <Tom_itx> i need to set mine up to match my cad cam tool list
[00:01:45] <Tom_itx> linux-cnc-bob you probably can
[00:02:00] <linux-cnc-bob> ya I think G10
[00:02:02] <linux-cnc-bob> but didnt work
[00:02:08] <WiillenCMdesign> its tool.tbl
[00:02:15] <Tom_itx> what dir?
[00:02:18] <WiillenCMdesign> a file in the config in your home directory
[00:02:33] <WiillenCMdesign> /home/linuxcnc/configs/YOURMACHINE
[00:02:55] <Tom_itx> oh
[00:02:57] <Tom_itx> ok
[00:03:21] <WiillenCMdesign> it can be opened with gedit
[00:03:26] <Tom_itx> yeah i did
[00:04:05] <WiillenCMdesign> you need a g43 after your g10
[00:04:12] <WiillenCMdesign> to reload the tool table
[00:04:34] <WiillenCMdesign> look something like this
[00:04:42] <WiillenCMdesign> T20 M6
[00:05:06] <WiillenCMdesign> G10 L1 P20 R.118
[00:05:08] <WiillenCMdesign> G43
[00:05:47] <WiillenCMdesign> sorry its T20 M6 G43*
[00:06:00] <WiillenCMdesign> then G43 after you change the offset
[00:09:29] <WiillenCMdesign> gotta love late night machining
[00:15:39] <Tom_itx> how do you specify a bull or ball nose endmill in the tool table?
[00:18:18] <Tom_itx> linux-cnc-bob, http://www.linuxcnc.org/docs/html/gcode/tool_compensation.html#_cutter_compensation_a_id_sec_cutter_compensation_a
[00:19:41] <WiillenCMdesign> that i don't know
[00:19:45] <WiillenCMdesign> never have to worry about it
[00:19:57] <WiillenCMdesign> i use solidcam, so it does it for you
[00:20:09] <Tom_itx> yeah i use a cad cam as well
[00:20:20] <Tom_itx> probably no need to worry with it in the tool table
[00:20:27] <Tom_itx> just the diameter
[00:20:44] <WiillenCMdesign> i know where i work there is no setting in our vmc's for ball nose or bull nose
[00:20:51] <WiillenCMdesign> only the length, and radius
[00:48:16] <linux-cnc-bob> is that "imachining" in solidcam any good?
[02:03:24] <DJ9DJ> moin
[04:18:17] <Loetmichel> mornin'
[04:20:52] <Loetmichel> <- setting up his IBM X60s as a testbed for stepper hardware... conclusion: good for testing, not good for production work. It has a maximum jitter of 520000ns.. :-(
[05:50:19] <r00t4rd3d> nice
[06:13:41] <r00t4rd3d> i wake up in the morning with a craving for coffee, cigarettes and wanting to cut something.
[06:14:16] <r00t4rd3d> 7am and I am going to cut a T Rex model :/
[06:16:03] <r00t4rd3d> http://www.cnczone.com/forums/woodworking_projects/5276-dinosaur_skeleton_other_models_dxf.html
[06:16:09] <r00t4rd3d> my new favorite thread
[06:17:29] <r00t4rd3d> http://www.cnczone.com/forums/1131439-post2875.html
[06:17:34] <r00t4rd3d> thats cool
[06:35:00] * archivist tasks r00t4rd3d with a wooden clock http://www.bhi.co.uk/images/woodclock.JPG /me trying to find a better image, its 7/8ft tall
[06:35:46] <r00t4rd3d> im sure my machine is not big enough for that
[06:36:00] <r00t4rd3d> i would have to scale it to 3ft
[06:36:51] <r00t4rd3d> a mini grandfather clock would be cool
[06:37:01] <r00t4rd3d> desktop grandfather clock
[06:37:07] <archivist> you probably can make it as all the parts are built up for many different types of wood
[06:37:16] <archivist> for/from
[06:37:53] <r00t4rd3d> ive seen some clock project files and fuck that shit.
[06:38:05] <archivist> so he got the grain in the right direction and the best wood for the part and looks
[06:38:15] <r00t4rd3d> ill stick with childrens dinosaur puzzles
[06:38:33] <archivist> get into the mans world!
[06:38:43] <r00t4rd3d> toys!
[06:39:03] <archivist> daddies toys are better
[06:44:54] <r00t4rd3d> last night i set my z axis offset to 0.50 instead of 0.25, that was a fun few seconds.
[06:46:49] <r00t4rd3d> then i crashed my gantry into a clamp
[06:56:34] <r00t4rd3d> I got a bag laying on my desk with 6 limit switches and a estop in it
[06:56:54] <r00t4rd3d> i guess those are for pussy's
[07:01:15] <archivist> dont worry you are not the only collector of "spares" my switches are still in a parts draw
[07:01:27] <r00t4rd3d> ha
[07:02:31] <archivist> and even is the machine has one switch...wire it?
[07:02:37] <archivist> is/if
[07:04:47] <r00t4rd3d> im gonna hook my estop up today
[07:08:10] <archivist> my lathe has a moveable limit switch to the left of the carriage but which tool am I going to use, will I be boring inside the spindle etc
[07:52:37] <r00t4rd3d> when i set my tool settings in pycam it never sets it right in linuxcnc but I dont have the tool i set in pycam in my tool list in linuxcnc. Is that why? Do I have to add all the bits to my tool table?
[07:53:24] <r00t4rd3d> i think its just picking the closest size in my tools now
[07:53:45] <r00t4rd3d> i should read the manual some day
[08:24:52] <Tom_L> yes, people put as much work into them as they do the software that goes with them
[08:25:21] <r00t4rd3d> i can just ask jt here
[08:25:44] <Tom_L> and 1/2 the time he gives you a link
[08:26:29] <r00t4rd3d> i have a sore finger can you just tell me?
[08:26:37] <Tom_L> no
[08:27:44] <r00t4rd3d> is jt shop and j thornton the same person?
[08:28:02] <r00t4rd3d> do i got that right....
[08:29:18] <Loetmichel> *GRRR
[08:29:47] <Loetmichel> Grilled a MC34063 of a TB6560 board... why do the chinese use a 25V Cap for them?
[08:30:08] <Loetmichel> and then write "36V max input"?
[08:30:11] <Tom_itx> what did you apply to it?
[08:30:51] <r00t4rd3d> i put 24v to mine :/
[08:31:23] <r00t4rd3d> should i lower that?
[08:32:04] <Loetmichel> 27 volts
[08:32:08] <r00t4rd3d> lol
[08:32:12] <Tom_itx> if it's rated for 25v it will shorten it's life
[08:32:32] <Loetmichel> the evidence says otherwise...
[08:32:39] <archivist> hmm wiki bug http://wiki.linuxcnc.org/cgi-bin/wiki.pl?M100-199 the link to a file is not what the user intended /me does not know this wikis obscure syntax
[08:32:55] <Tom_itx> mine is 50v and i used 63v caps which is very minimal. i should have used 75v caps
[08:33:33] <Tom_itx> but i got them surplus
[08:35:47] <Tom_itx> archivist are you trying to implement a user m code?
[08:35:59] <r00t4rd3d> should I turn my power supply down you think?
[08:36:03] <r00t4rd3d> to like 18v?
[08:36:05] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=13412
[08:36:07] <archivist> no, trawiling the wiki for dead links
[08:36:09] <Loetmichel> @ tom-itx
[08:36:14] <Tom_itx> ahh
[08:36:37] <archivist> hacking a spider to find the crap
[08:36:44] <Loetmichel> heard it "POP" from the cap and then "crackle" from the Chip
[08:36:46] <Tom_itx> Loetmichel that's not a happy cap
[08:37:20] <archivist> past its use by date
[08:37:38] <r00t4rd3d> Loetmichel, can you solder on a new one?
[08:37:42] <Loetmichel> the boards are BRANDNEW, ordered last week
[08:37:47] <Loetmichel> was first test
[08:37:51] <r00t4rd3d> i could fix that for you
[08:37:53] <Tom_itx> so that's an easy fix. recap the board with higher voltage caps
[08:37:57] <Loetmichel> r00t4rd3d: if i had one...
[08:38:03] <Loetmichel> the chip, not the cap
[08:38:17] <Tom_itx> just leave the tantalum caps though. they're fun to watch when they explode
[08:38:31] <r00t4rd3d> i read never to go over 24v with them
[08:38:40] <r00t4rd3d> so thats why i got a 24v power supply
[08:39:07] <r00t4rd3d> i guess the 25v cap explains that now.
[08:39:40] <Tom_itx> that's pushing it to it's limit every time you switch it on
[08:39:53] <r00t4rd3d> im turning my supply down to 18v
[08:40:02] <r00t4rd3d> its adjustable
[08:40:24] <r00t4rd3d> the input is 12-36v
[08:40:32] <r00t4rd3d> well thats what the man says
[08:40:46] <Tom_itx> what are the driver chips rated for?
[08:40:48] <Loetmichel> r00t4rd3d: the board is specified to go up to 36V, so 27V SHOULD be on the save side
[08:41:30] <r00t4rd3d> return it
[08:41:37] <Tom_itx> the 100uf 50v one is probably the supply cap
[08:41:47] <Loetmichel> i will
[08:42:07] <r00t4rd3d> are your supplies adjustable?
[08:42:30] <Loetmichel> and the second one also, there one driver is erratic (misses steps at about 1/3 clock of the other)
[08:42:39] <Loetmichel> yes, in margins
[08:43:42] <Loetmichel> dialed iot down to 24V now, checking for the other board
[08:47:46] <Loetmichel> seems to run better... ok, good to kmow... shit, that will cost me 20% speed....
[08:47:59] <Tom_itx> get a better driver board?
[08:49:30] <Loetmichel> its for a series of cheam 300*400*120mm CNC mills... i will go for <500Eur selling price plug and play ready
[08:49:32] <Loetmichel> cheap
[08:49:39] <Loetmichel> so the board HAS to be cheap
[08:49:52] <andypugh> That Wiki page is just plain confusing. I thought there was one containing answers, not questions.
[08:50:01] <Tom_itx> heh
[08:53:32] <Loetmichel> Tom_itx: http://youtu.be/YR8uLMVKDkQ
[08:53:36] <Loetmichel> runs much better
[08:54:32] <andypugh> They look like stepper motors, only smaller :-)
[08:56:06] <Loetmichel> andypugh: got 18 of them from a "dismantle session" in the company
[08:56:08] * Tom_itx snickers
[08:56:37] <Loetmichel> they have 7,5°/step, ~1A and 6.5 Ohms.
[08:56:46] <Loetmichel> not bad for free ;-)
[08:56:55] <Loetmichel> and about 500mNm
[08:57:02] <Loetmichel> holding torque
[08:57:37] <Loetmichel> its sufficient for a small cnc router
[08:57:48] <Tom_itx> or maybe a reprap
[08:58:01] <Loetmichel> to slow
[08:58:09] <Tom_itx> oh
[08:58:41] <Loetmichel> fir the reprap i have another set: http://www.youtube.com/watch?v=ex39zP8alnY
[08:58:42] <Loetmichel> ;-)
[08:59:36] <Tom_itx> does reprap need 5?
[08:59:57] <Tom_itx> 2 for the gantry?
[09:08:27] <Loetmichel> i will use 2 extruders
[09:32:41] <Loetmichel> Tom_itx: a reprap runs at and above 250mm/s
[09:32:55] <Loetmichel> so no chance with the small Printer steppers
[09:47:07] <r00t-Shed> how i pick my tool out of the tool table?
[09:47:17] <r00t-Shed> just click the little box?
[09:48:18] <skunkworks__> ? You call it from gcode...
[09:48:31] <r00t-Shed> it normally says "No tool" at the bottom and its just the default cone
[09:48:34] <r00t-Shed> or v shape
[09:49:46] <Tom_itx> Loetmichel do they run fast in order to keep up with the melted plastic?
[09:50:11] <Tom_itx> or because of the runtime involved
[09:50:24] <Loetmichel> both
[09:51:40] <Tom_itx> what do most of those guys use to generate the layered toolpaths
[09:51:51] <Tom_itx> those must be huge files
[09:51:56] <skunkworks__> http://linuxcnc.org/docs/2.5/html/gcode/tool_compensation.html
[09:52:21] <Loetmichel> Tom_itx: depends
[09:52:31] <Loetmichel> there are a handfull of slicers
[09:53:10] <Loetmichel> and yes, the reprap can access a SDcard dor storing the files ;-)
[09:58:33] <Tom_itx> Loetmichel are any of them successfully using linuxcnc?
[09:59:21] <Loetmichel> Tom_itx: only for the repstrap
[09:59:38] <Loetmichel> the bootstrap device to build an RepRap
[10:00:00] <Loetmichel> because the reprap electronics have an avr in it with a gcode interpreter
[10:00:09] <Tom_itx> i know
[10:00:12] <Loetmichel> they are running standalone
[10:00:18] <gene_> <Loetmichel> I'd cut my losses with that TB65XX stuff, and get a 2M542 , at about 50 USD an axis, plumb blows the single chip stuff out of the arena. I have 7 of them already. 50 volts, 4.2 amps, runs quite cool if above 24 volts, I have 4 at 28volts in the mill box, and 2 at 40 volts in the lathes box and a spare on the shelf.
[10:00:19] <Tom_itx> what avr do they typically use?
[10:00:43] <Loetmichel> gene_: i payed less than 50$ fpr THREE axis...
[10:00:52] <Loetmichel> Tom_itx: ardunio mega
[10:01:09] <Tom_itx> that must be a mega2560
[10:01:33] <gene_> Reviws on the TB65XX stuff have been uniformly damning.
[10:01:48] <gene_> Reviws=-reviews
[10:02:25] <gene_> Got a URL for that one?
[10:03:11] <Loetmichel> Tom_itx: it is
[10:03:35] <Loetmichel> gene_: http://www.ebay.de/itm/280891221546
[10:03:41] <Tom_itx> what do they do, put a stepper shield on it?
[10:03:56] <Loetmichel> Tom_itx: more or less
[10:04:01] <Loetmichel> google ramps 1.4
[10:05:08] <Tom_itx> are those drivers from sparkfun better?
[10:05:11] <Tom_itx> i don't have the pn
[10:05:42] <Loetmichel> no idea
[10:05:55] <Tom_itx> i think mendlemax uses tose
[10:05:57] <Tom_itx> those*
[10:07:12] <andypugh> I wish it would stop raining. My workshop floor is now below the water table :-(
[10:07:24] <andypugh> Only just, but it's worrying.
[10:07:37] <Tom_itx> sandbag it
[10:07:56] <andypugh> Ot's oozing up round the floor slab
[10:11:13] <Tom_itx> i wish we would get some rain. it was teasing us last night
[10:17:36] <archivist> we have monsoon weather this last few days
[10:18:14] <archivist> andypugh, dig a pit and install a sump pump
[10:18:42] <archivist> I had the garage soaking the other week
[10:24:19] <gmagno> my nema 17 motors do a lot a noise, is it normal? It looks like tv static :-?
[10:25:20] <gmagno> andypugh, where you from?
[10:28:47] <archivist> another swamp in england 140 miles south of me in the middle swamp
[10:34:36] <gene_> Could you guys complaining about the rain send me some? We are about 15-20" behind here in WV USA.
[10:35:32] <archivist> we have bukkkets but its hevi, come fetch
[10:35:40] <Tom_itx> last summer we had over 50+ days of above 100F weather, compared to the dust bowl we were dryer
[10:36:45] <gene_> With temps in the 90+ range, and some folks still without power after that storm a week ago last Friday night, we could use both the water and the cooling.
[10:36:53] <Tom_itx> little milder today, Temp: 82.0 F (27.8 C)
[10:38:14] <gene_> That I could tolerate, but WV is now only a degree cooler than Yuma AZ, which is usually considered to be hells exhaust.
[10:39:58] <archivist> why dont the americans bury their power cables! power outages are far too common
[10:40:36] <Tom_itx> some are
[10:40:52] <Tom_itx> then they just get cut when someone digs
[10:41:27] <Tom_itx> some areas are too rocky or unstable to bury
[10:41:42] <gene_> I've now read several threads on the TB6560 over on the cnczone. Yeah, using a backhoe for a divining rod is considered to be poor form.
[10:43:00] <gene_> Cost per mile is about 30x the cost of poles, but poles which trees can fall on, cost more in the long run.
[10:46:01] <gene_> And in this rugged terrain, even poles per mile cost more. As for the TB6560 weak point, where logic power must be up and stable before motor power is applied, I suspect the A3977 may also suffer from that as I have destroyed 3 of them at powerup, and zero while running..
[10:46:49] <Tom_itx> gene_ are you in the mountains?
[10:48:44] <gene_> The 2M542 has its own protection. More or less, I am nominally 100 miles north oc Charleston WV on the I79 superslab. One farm I used to hunt deer on cl;aimed he was farming both sides of his place, but wasn't telling the tax collector.
[10:50:17] <gene_> Much of this local area is too steep for these old pins to try & climb, so 4wd rigs are the rule here, not the exception. Both of mine are 4wd.
[10:52:58] <gene_> I am perhaps 300 meters from the West Fork River, and probably 25 meters above it. Just walking around the local block is a 10-12 meter elevation change.
[10:53:47] <gene_> If one wants flat gound, you make it with a D-9.
[10:57:54] <gene_> Where are you Tom-itx?
[10:58:10] <gmagno> it's a bit offtopic, but... pycam shows an 8 hour ETA to complete the processing of the default "PyCAM" carve... is this normal...? Could anyone send me the gcode for that...? :-/
[10:58:14] <Tom_itx> ks
[10:58:49] <gene_> Ahh, you have flat ground to give away (almost)
[10:58:58] <sumpfralle> gmagno: do you mean "processing" for calculation. Or do you refer to the machine time?
[10:59:05] <Tom_itx> or blow away if it's too dry
[10:59:14] <gmagno> sumpfralle, calculation
[10:59:52] <gmagno> sumpfralle, my pc is not that bad... i think... it's 3200+ AMD 2GB RAM
[11:00:21] <sumpfralle> and which process did you choose? rough? contour? surface?
[11:00:23] <gene_> And gmagno, I have (that too, Tom) written 60 liners that took 36 hours to run.
[11:01:36] <gmagno> sumpfralle, erm... rought, semi-finish and finish
[11:02:16] <sumpfralle> ok - this can take a while
[11:02:16] <sumpfralle> the model is quite big and the default processing settings use quite a small tool size and step width
[11:02:16] <sumpfralle> hard to say, how long it would take
[11:03:01] <gmagno> why would the developer put a so demanding 3d object by default...?
[11:03:13] <sumpfralle> by accident - sorry :)
[11:03:33] <Tom_itx> gmagno, to show off
[11:03:37] <gmagno> :D
[11:04:03] <gmagno> but you guys know what 3d object I'm talking about, right?
[11:04:08] <Tom_itx> is it a default file from the install?
[11:04:16] <Tom_itx> no i don't have pycam
[11:04:26] <gmagno> do you suggest any other software?
[11:04:36] <gmagno> open source pls
[11:04:39] <gmagno> :)
[11:04:51] <gene_> However, I had the sharpest blade ever in my tablesaw for that 36 hours on a dremel turning a diamond disk
[11:04:57] <sumpfralle> gmagno: yes, I know it - ok - it is just 1500 triangles
[11:04:57] <sumpfralle> the main calculation problem is the contour follow algorithm - the rest is quick
[11:05:12] <gmagno> the only non open source soft I can't get rid of, is solidworks... :-/ (so far)
[11:05:37] <gmagno> sumpfralle, exacly, right now it is running the countourfollow
[11:06:36] <gmagno> gene_, nice
[11:06:36] <sumpfralle> this is somehow a bad combination: complicated tool shape and inefficient algorithm -> hugh calculation effort
[11:07:09] <gmagno> btw, what does that contourfollow process does? Is it something I could live without?
[11:07:13] <sumpfralle> huge
[11:07:45] <sumpfralle> yes - it was an effort to try to overcome specific problems of the other waterline algorithm (polygon based) - just use the other one
[11:09:58] <gmagno> I'm very excited to make some experiments on wax I melted from a candle :P I'm hoping to do more carving tests without wasting wood or paper
[11:10:30] <Tom_itx> that wax may not hold up, you may need some binders in it
[11:10:42] <Tom_itx> machinable wax works well though
[11:10:45] <Tom_itx> you can make it
[11:11:02] <gmagno> hmm, but why wouldn't it hold up?
[11:11:18] <Tom_itx> doesn't take much to melt it
[11:11:23] <gmagno> i see
[11:11:29] <gmagno> how to make wax?
[11:11:32] <gmagno> good wax
[11:12:53] <Tom_itx> i haven't tried it, we bought the blue stuff
[11:13:10] <r00t4rd3d> dont eat the blue acid!
[11:13:19] <Tom_L> http://www.weaponeer.net/forum/uploads/dcorb/files/2009-02-23_174227_machinable_wax.pdf
[11:13:23] <Tom_itx> read that
[11:14:15] <gmagno> Tom_L, thank you!
[11:14:54] <Tom_L> http://www.weaponeer.net/forum/uploads/dcorb/files/2009-02-23_174305_machinable_wax_part_2.pdf
[11:14:58] <Tom_itx> part 2
[11:15:36] <gmagno> sweet
[11:15:53] <Tom_itx> i've heard of mixing it with other stuff
[11:17:24] <Tom_L> http://repraplogphase.blogspot.com/2010/06/nice-recipe-for-machineable-wax.html
[11:18:02] <elmo40> Tom_L: where is this list of what bags worked and what bags just shrunk?
[11:18:07] <Tom_itx> save your milk jugs
[11:18:36] <Tom_itx> HDPE
[11:18:44] <Tom_itx> or LDPE
[11:18:46] <Tom_itx> i suppose
[11:18:57] <Tom_itx> swipe your wife's cutting board
[11:19:23] <elmo40> its wood ;)
[11:19:31] <elmo40> rubbermaid containers
[11:19:40] <elmo40> they are mainly ldpe
[11:20:20] <Tom_itx> grind it up a bit first
[11:20:29] <Tom_itx> use a strainer when you pour
[11:20:43] <Tom_itx> and let it cool a bit before you pour, it won't shrink as much
[11:21:40] <elmo40> now then, wax is mixed with LDPE? and they make a nice heterogenous mixture?
[11:21:47] <Tom_itx> i think so
[11:22:07] <Tom_itx> add ldpe until no more will disolve i guess
[11:22:16] <elmo40> from the pdf it appears it does, just not sure what plastics were used. said bags.
[11:22:17] <Tom_itx> more you add the firmer the 'wax' will be
[11:22:22] <elmo40> k
[11:22:30] <elmo40> good for making my sand molds :)
[11:22:38] <Tom_itx> it's expimental :)
[11:22:53] <Tom_itx> experimental*
[11:23:14] <Tom_L> http://www.cnczone.com/forums/hobby_discussion/26351-cnc_paternmaking_casting-machinable_wax.html
[11:23:44] <elmo40> 1 lb parafin (Gulfwax etc)
[11:23:44] <elmo40> 4 oz polyetheline film
[11:24:04] <elmo40> parafin and polyetheline film (garbage bags?)
[11:24:05] <elmo40> ok
[11:24:08] <elmo40> sounds simple enough
[11:24:20] <Tom_itx> read those links and pick what suits you best
[11:24:24] <elmo40> 1:4 ratio in that mixture
[11:24:41] <Tom_L> http://daleshort.cc/doku.php?id=pages:machwax
[11:24:43] <Tom_itx> one more
[11:24:59] <Tom_itx> they all seem to refer to hdpe or ldpe
[11:25:08] <gene_> Well, I've since worn that blade out. Cherry is a bit hard on blades. The next best blade, at $40 USD for a 10" $70 for a 12" is made by CMT, called an ATBF, its sweet too.
[11:25:21] <Tom_itx> save your walmart bags
[11:25:49] <gene_> I do some furniture too when the mood hits me.
[11:25:58] <gmagno> erm... one more time on the pycam topic, do you know any better solution for 2D/3D object to gcode conversion software?
[11:26:43] <gene_> I have just now installed pycam, and while it seems slow, looks like it does a good job.
[11:27:16] <Tom_itx> my pc is too slow to try it
[11:27:28] <gmagno> Tom_itx, what do you use?
[11:27:39] <Tom_itx> i have commercial software
[11:27:42] <sumpfralle> you can use remote servers to run in it a grid
[11:28:03] <sumpfralle> (you need to setup these on your own - no public servers are available)
[11:28:57] <gene_> I have a 4 core phenom here, running at 2100, but it says the roughing pass on the pycam logo will be 140 minutes, but I haven't looked at the code to see if its suitable for my machine either.
[11:29:23] <gmagno> gene_, ouch
[11:29:32] <sumpfralle> that is weird - on my (T61 - five years old) laptop it took 10 minutes
[11:29:33] <gene_> I'd render here, and export it to the machine that will do the swarf making
[11:29:45] <Tom_L> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Cam
[11:30:15] <Tom_itx> i hear sheetcam is pretty good for 2.5d stuff
[11:31:09] <gene_> To render the roughing pass was about 6 minutes on this machine, this figure is its estimated run time on the machine making the swarf.
[11:31:10] <sumpfralle> 2,5D things are also pretty fast on PyCAM (sorry for advertising here ...)
[11:31:37] <Tom_itx> the stepover on the demo may be too fine too
[11:31:46] <Tom_itx> you may be able to get by with a coarser cut
[11:31:58] <gene_> 60% overlap by default
[11:32:46] <Tom_itx> i didn't check any of the settings, i just hit 'GO'
[11:33:00] <Tom_itx> it was gonna take 11+ hrs so i quit
[11:33:11] <gene_> Spindle speed and horsepower are my limit, its an expanded table micromill with a whole new Z axis drive.
[11:33:20] <gmagno> :D
[11:33:25] <taiden> There's so much MDF dust all over my basement
[11:33:37] <taiden> that I have to wear a p100 mask to avoid sneezing while sitting at my computer
[11:34:26] <taiden> #homecncproblems
[11:34:47] <gene_> You can see it, but the pix are old, at <http://coyoteden.dyndns-free.com:85/gene>, follow the emc link.
[11:38:20] <gene_> Now, silly Q probably, but can inkscape export the STL that pycam needs? I'm assuming freecad can too, but I need help with that, lots of it.
[11:39:37] <sumpfralle> inkscape exports SVG files
[11:39:48] <sumpfralle> pycam can read these for 2,5D models
[11:40:03] <sumpfralle> freecad and qcad export STL suitable for PyCAM
[11:40:21] <sumpfralle> (and openscad and ....)
[11:40:37] <sumpfralle> dxf are also fine
[11:42:36] <gene_> Sounds better yet, thanks.
[11:44:26] <gene_> I need something to help me lay out the bearing boss and the screw extension to put a ball screw in the X of my mini-lathe
[11:45:31] <gene_> openscad, how does that compare to freecad?
[11:48:44] <sumpfralle> openscad is a kind of programming language. You design your model by combining basic 3D shapes. For me personally this is an ideal approach to modelling.
[11:49:14] <gene_> Maybe that is what I need.
[12:02:00] <Jymmm> gene_: All you need is a beer and to see something naked!
[12:02:37] <archivist> a naked jymmm we do NOT wish to see
[12:03:20] <Jymmm> archivist: You know you want to
[12:04:08] <Tom_itx> might be a good laugh
[12:04:27] <taiden> my linuxcnc box keeps randomly turning off
[12:04:35] <taiden> i just replaced the power supply and it still does it
[12:04:45] <taiden> what tools are available to me under linux to diagnose this?
[12:04:57] <Jymmm> overheating
[12:05:04] <taiden> cpu temp is 45 c
[12:05:08] <Tom_itx> hot graphic card
[12:05:12] <taiden> according to bios
[12:05:28] <Tom_itx> this one does it when the graphic chip gets too dusty
[12:05:37] <taiden> interesting
[12:05:45] <taiden> is there a way for me to check gpu temp?
[12:05:55] <taiden> it's an nvidia geforce 4400 ti
[12:06:06] <Jymmm> lick it
[12:06:10] <taiden> uymmy
[12:06:20] <taiden> it's weird
[12:06:24] <taiden> i turn it off overnight
[12:06:29] <taiden> first boot will generally last 1 hour
[12:06:33] <taiden> then after that it will run all day and night
[12:07:15] <Jymmm> caps buldging?
[12:07:31] <taiden> i inspected visually last time i was in there and saw nothing alarming
[12:08:30] <Jymmm> reseat ram/cpu/cards, test ram for 24+ hours
[12:09:41] <MrSunshine> hmm need to connect this thingie up now =) made schematic for a sound card protecting sound card oscilloscope :P
[12:09:43] <taiden> what diagnostics tools are available to me under linux
[12:09:53] <MrSunshine> (soundcard protecting as in clips signals comming out that is over 1Vpp) =)
[12:10:06] <MrSunshine> simple little thing this thing
[12:10:13] <MrSunshine> only thing is that i need negative supply :P
[12:12:34] <gene_> jymmm: I can handle the beer but diabetes says my limit is 2 a day, and the diabetes fixed the naked woman problem too, I can't do them any good. :(
[12:13:19] <gene_> openscad looks as if it will help me, thanks for the hint.
[12:14:24] <Jymmm> gene_: Nonesense, be creative =)
[12:14:37] <gene_> Get that - supply from the pc's psu. Current is limited but you aren't brewing coffee with it anyway.
[12:15:39] <gene_> jymmm, first, the lady needs to want me to be creative. Half dead from COPD she doesn't give a shit either.
[12:17:15] <Jymmm> gene_: Hey, I said be creative... gcode a carving of her =)
[12:17:41] <gene_> Hummmm.... ;-)
[12:17:42] <taiden> ummmm
[12:17:49] <taiden> i just ran into a weird bug?
[12:18:12] <taiden> when I do g2 i0 j0 z-1 p10, the z axis in emc2 moves but on the machine it doesnt
[12:18:16] <gene_> with what?
[12:18:23] <taiden> when i go g0 z-1 it moves on the machine
[12:19:41] <gene_> I don't see a feedrate in that statement, and normally one would do that in the 'inverse time mode'
[12:19:57] <taiden> that was just from mdi
[12:20:01] <taiden> not from a file
[12:20:20] <taiden> when i try to do helical interpolation it cuts the circle and does the right number of 'turns'
[12:20:24] <taiden> but it doesn't advance the z
[12:20:32] <taiden> but when i do linear moves it advances the z just fine
[12:20:41] <taiden> the weird thing is it was working just fine
[12:20:43] <taiden> and then it stopped
[12:20:47] <taiden> nothing changed
[12:20:50] <taiden> that i am aware of
[12:20:59] <taiden> i thuoght it was a loose motor cable but g0 g1 still work in the z
[12:21:06] <gene_> is z moving by jog now?
[12:21:14] <taiden> yep
[12:21:22] <taiden> only doesn't work with helical interpolation
[12:21:29] <taiden> but again, on the DRO it shows the z moving
[12:21:32] <taiden> while in real life it doesnt
[12:21:48] <gene_> how fast?
[12:22:23] <taiden> f40
[12:22:34] <taiden> g2 i0 j0 z-1 p10
[12:23:08] <gene_> and what version of linuxcnc? 40 is about 3x what my toy can do.
[12:23:25] <taiden> 2.5.0
[12:25:47] <gene_> Could be a new bug, its not something I have used recently. That last time I used it, drilling some cap screw recess's was perhaps a year ago, worked ok then.
[12:26:22] <taiden> :)
[12:26:25] <taiden> i just restarted it and it works now
[12:26:27] <taiden> really strange
[12:26:38] <taiden> would really suck if it happened in the middle of cutting a plate of parts
[12:26:46] <gene_> That was gonna be my next suggestion.
[12:27:14] <gene_> Yup :(
[12:27:23] <taiden> could g92 offsets somehow get in the way of it?
[12:27:34] <taiden> the weird thing is DRO was moving Z but the motor wasn't turning
[12:28:25] <gene_> Humm, interface low voltage problem but thats a looooooong stretch IMO.
[12:28:49] <taiden> i'm about to jump on that intel board
[12:29:01] <gene_> with both feet?
[12:29:05] <taiden> and one arm
[12:29:32] <gene_> Check those caps wrapped around the cpu again.
[12:30:02] <taiden> yeah..
[12:30:25] <taiden> i just wish i had built a momus machine to begin with and used the intel board
[12:30:42] <taiden> i did a microcarve inspired design and used an old PC and it's been a huge headache
[12:30:54] <gene_> I had to retire a perfectly good Mach-speed board, too lazy to take it up to the tv station & raid Daves grocery sack of caps for those.
[12:31:21] <taiden> who is dave?
[12:31:45] <gene_> the engineer I gave my old red CE's chair to back in 2002
[12:31:47] <Jymmm> dave's not here man
[12:32:05] <gene_> He is likely not there either...
[12:32:34] <Jymmm> heh
[12:33:30] <gene_> With 2 tv transmitters and a radio station plus all the microwave that has been added since I retired, he is 'on the road' way too much.
[12:34:36] <taiden> damn it
[12:34:39] <taiden> it's doing it again
[12:34:43] <taiden> at f40 it wont advance Z
[12:35:01] <taiden> is this a stepconf issue?
[12:35:04] <gene_> will it if f20?
[12:35:12] <taiden> i'll check
[12:35:26] <taiden> alright halfawy through it decided to work
[12:35:31] <taiden> haha
[12:35:33] <taiden> awkward
[12:35:40] <taiden> that is so awkward
[12:35:54] <gene_> Humm, check your motor supply voltage then.
[12:36:02] <taiden> its 49v
[12:36:05] <taiden> gecko g540
[12:36:26] <taiden> could it be my router?
[12:36:32] <taiden> i just upgraded to a 12a router over a 5a
[12:36:43] <gene_> sounds good. Is the gecko hot?
[12:36:50] <taiden> nope
[12:37:01] <taiden> actually yes
[12:37:02] <taiden> it is hot
[12:37:28] <taiden> the underside is
[12:37:33] <taiden> which was sitting on my workbench
[12:37:47] <taiden> it feels like it's about 180f
[12:37:49] <gene_> humm, it could be saving itself then, can you put more fan on it easily?
[12:38:04] <taiden> can't keep my finger on it more than a secnod
[12:38:13] <Jymmm> lick it
[12:38:19] <taiden> yumyum
[12:38:27] <taiden> im going to give it a rest and see how it fairs in a few minutes
[12:38:33] <taiden> brb
[12:38:37] <gene_> Thats not 180, but probably at least 140 then.
[12:38:48] <taiden> fair enough
[12:39:02] <Jymmm> gene_: Yeah, but you're Asbestos Man!
[12:39:17] <gene_> At 180, milliseconds before reflexes jerk your finger away.
[12:39:44] <taiden> i dunno
[12:39:53] <taiden> i have pretty high fire resistance from being a dishwasher as a kid
[12:39:59] <gene_> And it may be shiney when it comes away.
[12:40:27] <Jymmm> and no fingerprints for the guberment to come hunt you down!
[12:41:26] <gene_> hell, if they knew half what I've done in 77 years I'd still be having a striped tan.
[12:48:00] <Jymmm> still?
[13:18:11] <taiden> i think you guys nailed it with the g540 overheating
[13:18:25] <taiden> i've suspended it so it has free air all the way around it
[13:21:21] <taiden> alright i take that back
[13:22:51] <taiden> okay so for some reason
[13:23:08] <taiden> if the feed rate is slow enough
[13:23:13] <taiden> it will miss all steps
[13:26:37] <taiden> anything below f1 seems to miss all steps
[14:09:11] <r00t-Shed> 300K lines of gcode down, 25% more to go
[14:11:02] <Tom_itx> cutting or generating?
[14:11:09] <r00t-Shed> cutting
[14:11:30] <Tom_itx> surfaces take alot of gcode
[14:11:42] <Tom_itx> lots and lots of real short lines
[14:11:52] <r00t-Shed> im doing a inlay
[14:11:59] <archivist> unless you can apply maths :)
[14:12:22] <Tom_itx> yeah
[14:12:47] <r00t-Shed> i just went to Mcdonalds and left my machine running.
[14:12:57] <r00t-Shed> ate there
[14:13:30] <Tom_itx> we had a couple parts we ran all night
[14:14:11] <r00t-Shed> i adjusted my power settings and my machine runs alot better
[14:14:14] <Tom_itx> took several days to machine the whole thing
[14:14:57] <r00t-Shed> i set the detail to high in Microcarve
[14:15:49] <r00t-Shed> so its making tons of small passes
[14:18:41] <r00t-Shed> overstep or what ever its called
[14:21:03] <gene_> So I had pycam render it all, looks like I'll be baking my cpu'
[14:21:21] <gene_> s for another 10 hours or so.
[14:21:31] <r00t-Shed> thats just pycam
[14:21:36] <r00t-Shed> its known for that
[14:22:06] <gene_> What I see in the render window does look ok though.
[14:38:58] <archivist> the website dead link problem(table still being populated) http://www.archivist.info/apt/aptos/apt360/orig_source/apt/php/linuxcnc.php
[14:39:21] <archivist> there are a few false positives
[14:39:33] <Tom_itx> Linuxcnx?
[14:39:37] <archivist> yup
[14:39:56] <Jymmm> sphider <--- lol
[14:40:05] <Jymmm> must be a brit thing
[14:40:23] <archivist> nah its french I think
[14:40:28] <Jymmm> lol
[14:41:06] <archivist> the other entrance to the data is http://archivist.info/sphider-1.3.5/search.php?query=404&search=1
[14:41:40] <archivist> I hacked that spider to get the links
[14:42:40] <Jymmm> your spider sucks =)
[14:43:02] <Jymmm> The first 404 on here is not a 404... http://archivist.info/sphider-1.3.5/search.php?query=404&search=1
[14:43:41] <Jymmm> or am I misunderstanding whic is which?
[14:43:47] <archivist> I did say there are some false positives,
[14:44:42] <archivist> eg if a page has 1404 as a value in it or a 404 line number etc
[14:44:51] <Jymmm> ok I mised that, and I was misunderstanding the entries
[14:45:34] <Jymmm> But this is weird...
[14:46:21] <archivist> only indexed 3900 pages on main site so far
[14:46:26] <Jymmm> you got a 404 on this http://www.linuxcnc.org/index.php/english/weblinks/12-realtime/2-rtlinux but it goes to some strange website http://www.fsmlabs.com/
[14:46:51] <Jymmm> #4 on here http://archivist.info/sphider-1.3.5/search.php?query=404&search=1
[14:47:43] <Jymmm> so there may be more than just dead links going on.
[14:50:46] <archivist> heh that is a spammed "linked from" page you should be taking the second line on the search result
[14:51:04] <archivist> yup found an extra problem
[14:51:11] <gene_> Ok, I'll byte, how do I get openscad to render a cylinder (small, sub inch) with more than 5 facets to the side
[14:51:39] <gene_> It seems to be ignoring any $fs = value I pass
[14:52:04] <archivist> has openscad got a quality setting
[14:52:22] <gene_> not that I have found so far
[14:52:51] <archivist> often 3d stuff displays crappily to speed the operation
[14:53:17] <archivist> and crap versions also use that in manufacture
[15:01:39] <Jbunch> I am working on the spindle encoder for my lathe. I am having problems with the "hm2_5i20.0.encoder.02.index-enable" the doc says it resets the hm2_5i20.0.encoder.02.count (and therefore also position) are reset to zero on the next Index. I am using an omron encoder and pullup resistors for the open collector outputs. my wires are connected to the _not input on the card. I have used setp...
[15:01:41] <Jbunch> ...to set "hm2_5i20.0.encoder.02.index-enable 1" I have checked my pulse from the encoder with an oscope and all is good.
[15:02:42] <Jbunch> any idea. I have been working on this for several days.
[15:04:54] <gene_> Maybe I should start at the top of the tuts, first thing is to rotate z to horizontal to match my lathe. bbe
[15:06:42] <archivist> Jymmm, just had a play with a redirect checker, site is giving a 303 redirect, another break in or whatever
[15:07:16] <Jymmm> archivist: Probably residue from the last one.
[15:07:30] <DJ9DJ> re
[15:08:45] <archivist> Jymmm, I suppose the url set I now have could be used to detect them
[15:09:47] <archivist> got 4400 ish and still rising, the reason the spider is immune is I set it to not leave the domain
[15:10:52] <archivist> and site hack wont know my user agent
[15:17:53] <Jymmm> archivist: That might be very nice. I know alex_joni has had a hell of a time finding them all.
[15:19:42] <archivist> I just checked the url table count, its 22k+ so the process is a long way from finished (I think there is a rate limit somewhere)
[15:20:30] <Jymmm> It's all good, slow is far better than none. I know alex_joni will appreciate any help in finding the residue
[15:23:00] <archivist> Jymmm, http://stackoverflow.com/questions/2964834/php-check-if-url-redirects
[15:28:00] <archivist> jymm that script works http://www.archivist.info/apt/aptos/apt360/orig_source/apt/php/linuxcnc_redirect_test.php
[15:28:30] <Jymmm> archivist: nice =)
[15:29:12] <archivist> I think I should shove the result back into a table
[15:30:24] <Jymmm> alex_joni may like some text format (mostly of paths) that can be redirected to some shell script if you have that option.
[15:38:16] <archivist> do not refresh that page :)
[15:41:33] <gene_> That translation doesn't seem to be possible, nor can I get it to render a cylinder with more than 5 sides. The tuts don't tend to be all THAT educational to me. So thats a waste of disk space IMO.
[15:43:55] <gene_> I guess I just write the gcode & be done with it.
[15:44:33] <gene_> 4 diameters in 5 places shouldn'
[15:44:45] <gene_> t be that hard
[15:55:51] <andypugh> Jbunch: What isn't happening that you think should happen?
[16:11:11] <Jbunch> As far as I can tell I am unable to calculate RPM because the output that you derive RPM from depends on output "hm2_5i20.0.encoder.02.position" This output derives its data from "hm2_5i20.0.encoder.02.counts / 500" Which is supposed to be reset to 0 after every pulse from "hm2_5i20.0.encoder.02.index-enable" . I have another 7i33 board from another machine. I get the same result.
[16:14:48] <r00t4rd3d> http://www.liveleak.com/view?i=2cf_1341765742
[16:33:42] <archivist> Jymmm, separated the testing from the display so http://www.archivist.info/apt/aptos/apt360/orig_source/apt/php/linuxcnc_redirect_test.php is just the result
[16:36:16] <andypugh> Jbunch: Sorry for taking so long between replies, I have been working in the workshop.
[16:37:19] <andypugh> Firstly, the encoder counts only reset once for every time the index-enable pin is set. When the index is seen, the encoder counts should go to zero, and the index-enable pin will go back to 0 to indicate that an index has been seen.
[16:38:00] <andypugh> Typically you do _not_ want to reset the encoder every rev.
[16:39:43] <andypugh> If you want RPM, then you can use the hm2_5i20.0.encoder.02.velocity pin. That is recalculated every servo thread, and is utterly independednt of index and index-enable.
[16:43:45] <andypugh> archivist: We have board electopns?
[16:45:17] <archivist> there used to be \0/
[16:49:07] <Jymmm> it was rigged, RECOUNT RECOUNT RECOUNT!!!!
[16:49:10] <JT-Shop> evening gents
[16:53:25] <Tom_itx> hey JT-Shop
[16:53:37] <Tom_itx> been out playin with the neighbor kids?
[16:54:07] <JT-Shop> no, a benefit poker run for vets today
[16:54:52] <Jymmm> Is that what the yutes are calling it these days
[16:56:23] <pcw_home> Jbunch: (should you read this later) first thing to check when index does not work is index polarity
[16:56:25] <pcw_home> that is when you are off index you should be able to set index enable by hand (with setp)
[16:56:27] <pcw_home> and it should stay set until the index position is reached. if index enable is immediately cleared
[16:56:28] <pcw_home> regardless of position, the index polarity is wrong and should be set properly
[16:59:59] <Tom_itx> pcw_home will encoder work on a single channel encoder?
[17:00:28] <Tom_itx> all i really want to do is display the rpm in axis
[17:01:06] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/cnc/psu/encoder_disk2.jpg
[17:01:19] <Tom_itx> pulled that out of a printer and would like to use it for that
[17:01:20] <andypugh> Tom_itx: Yes, you can use "Counter mode" for a 1-channel encoder. You need to make sure that the signal deosn't bounce though.
[17:01:30] <Tom_itx> just an ir sensor
[17:01:49] <Tom_itx> the ir shouldn't bounce should it?
[17:01:55] <andypugh> Tom_itx: With two sensors you can have quadrature (even with only one line of holes)
[17:02:27] <andypugh> (And file one notch deeper, you can get index too, for rigid-tapping)
[17:02:32] <Tom_itx> if i go that route down the road i'll make a different sensor for it probably
[17:02:53] <Tom_itx> i've got some quadrature encoders but i'm not sure if they would stand up to this
[17:03:26] <Tom_itx> 500cpr off that focus ring
[17:05:01] <Tom_itx> andypugh no room to file deeper, it would hit the hub
[17:05:13] <Tom_itx> unless i go with one with a bigger diameter
[17:17:48] <pcw_home> Jbunch: did you see my note about index polarity above?
[17:20:50] <DJ9DJ> gn8
[17:24:25] <Jbunch> PCW_home : no I did not see it .
[17:25:17] <Jbunch> Looks like I lost connection.
[17:27:42] <Jbunch> Andypugh: to use the velocity pin I get a reading of about 9.xxx at 550 rpm on the spindle at 60 hz from my vfd. I am assuming that I can also use this in the feedback loop.
[17:30:04] <Tom_itx> zlog
[17:30:04] <andypugh> Yes, you can use that. It is scaled in RPS, so 10 is about right.
[17:30:09] <Tom_itx> Jbunch ^^
[17:31:57] <Tom_itx> [16:56:23] <pcw_home> Jbunch: (should you read this later)
[17:33:02] <andypugh> Jbunch: You might find some clues here:http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Closed_Loop_Spindle_Speed_Control
[17:33:43] <andypugh> Though that uses the software encoder, not the Mesa one.
[17:35:47] <JT-Shop> Jbunch, having trouble configuring a spindle feedback with a Mesa card?
[17:37:13] <pcw_home> i just mentioned the index thing in case you want to use index for threading
[17:37:14] <pcw_home> (it has no effect on velocity) it does affect position but only if you set index enable
[17:37:16] <pcw_home> and this is normally controlled by LinuxCNC for homing and threading
[17:39:05] <Jbunch> JT-shop: Yes....
[17:41:32] <JT-Shop> I have my 5i20 lathe config on my web site if you want to compare the spindle section
[17:44:00] <Jbunch> JT-Shop : that wouldbe great...
[17:44:12] <Jymmm> Does anyone know of any inexpensive hose or strip heaters that can get up around 80f to 150f by chance?
[17:44:55] <JT-Shop> Jbunch, http://gnipsel.com/shop/hardinge/hardinge.xhtml
[17:45:12] <JT-Shop> complete configuration and wiring diagram for my hardinge CHNC lathe
[17:56:25] <Jbunch> JT-Shop: so you had to invert the output to get positive RPM cool. Was wondeing about that. Thanks...
[17:58:51] <andypugh> There are probably about 6 different ways to reverse things.
[17:59:23] <JT-Shop> yea maybe more ways if your clever
[17:59:49] <JT-Shop> anyway looking at a working config helps... I know I started with rob_h config
[18:00:16] * Jymmm votes for the time machine to reverse things =)
[18:01:40] <Jymmm> For you snow bound folks... http://www.amazon.com/Farm-Innovators-TC-3-Thermostatically-Controlled/dp/B0006U2HD2/ref=pd_sim_lg_1
[18:02:14] <Jbunch> pcw-home: when I try to use setp in halconfig I receive an error. invalid argument. setp hm2_5i20.0.encoder.02.index-enable 1
[18:02:27] <Jymmm> prevent the stuff in the shop/garage from freezing =)
[18:03:40] <andypugh> You can't setp it if it is netted to something.
[18:04:22] <Jymmm> Oh, they have for turning things on when too hot too
[18:04:40] <JT-Shop> Jbunch, an additional tip read the bottom of this page http://gnipsel.com/linuxcnc/configs/index.html
[18:11:25] <Tom_itx> Jymmm strip heater for what?
[18:12:38] <Tom_itx> they make a strip heater for bending polycarbonate
[18:14:34] <Tom_itx> http://www.delviesplastics.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=DPI&Category_Code=Plastic_Strip_Heaters
[18:14:37] <Tom_itx> 280F
[18:16:00] <andypugh> Ooh! This is nice. http://www.ebay.co.uk/itm/120906202168
[18:16:46] <archivist> snap it up
[18:17:10] <andypugh> It's a bit expensive.
[18:17:17] <Tom_itx> looks like the belt is missing
[18:17:23] <archivist> not as good as the complete one that made a million
[18:17:33] <andypugh> I wonder where you could mount the steppers :-)
[18:17:38] <Tom_itx> for that price i'd want a demo with it
[18:18:31] <andypugh> I think that the Maudslay lathe is more historically significant.
[18:20:05] <archivist> ok its only 65k http://www.maineantiquedigest.com/stories/index.html?id=2810
[18:21:10] <JT-Shop> this is so funny... http://www.power4home.com/
[18:21:43] <JT-Shop> http://www.power4home.com/ask-john/q-how-much-electricity-can-a-solar-panel-produce/
[18:21:51] <Tom_itx> JT-Shop i found something about on your AXIS home routine
[18:22:14] <Tom_itx> i had to add a G90 to it otherwise if i MDI and go to G91 mode it won't work
[18:22:22] <JT-Shop> he claims to power his whole house in Mn on a 200 watt solar panel
[18:22:44] <JT-Shop> my home routine?
[18:22:56] <Tom_itx> the button to home your axis on the ?plasma
[18:23:18] <JT-Shop> I don't have a button on my plasma to home the axis
[18:23:19] <Tom_itx> i had to add a G90 to the sub
[18:23:36] <Tom_itx> on the axis screen?
[18:23:42] <Tom_itx> i got it from you :)
[18:24:22] <JT-Shop> you mean the rapid to home button?
[18:24:27] <Tom_itx> yeah
[18:24:40] <JT-Shop> that is a G53 move
[18:24:52] <Tom_itx> i may have changed it to G28
[18:25:06] <JT-Shop> totally different then
[18:25:16] <jdh> 24,000 btu does wonders for my garage!
[18:25:19] <Tom_itx> i also found out that G40 doesn't ignore the tool table
[18:31:42] <Jbunch> pcw_home: Thanks my polarity is correct and it clears the set once per revolution.
[18:33:43] <JT-Shop> G40 just turns compensation off, what do you mean it doesn't ignore the tool table?
[18:34:35] <Tom_itx> well it read the tool diameter and adjusted for it
[18:34:53] <Tom_itx> which is G41
[18:43:20] <andypugh> Tom_itx: That really doesnt seem right
[18:45:59] <andypugh> JT-Shop: "Over 102,412 hard working Americans"...
[18:46:15] <andypugh> 102,413 perhaps?
[18:47:25] <Tom_itx> andypugh i know it doesn't but i happened to have the wrong diameter in the tool table and it read it and compensated the cut for it
[18:47:55] <Tom_itx> the cad program had the proper tool programmed and posted
[18:48:28] <Tom_itx> i've since gone thru and added all my cad tooling to the tool table
[18:48:36] <andypugh> It is possible that the initial move to the startting point was compensated, and that will give you a smaller circle ig you are specifying the centre.
[18:48:55] <Tom_itx> the circle was oversize by quite a bit
[18:49:26] <JT-Shop> Tom_itx, did you mean to use G41.1?
[18:49:28] <Tom_itx> the circle was oversize by quite a bit
[18:49:38] <Tom_itx> JT-Shop, no
[18:49:53] <Tom_itx> .660 instead of .562
[18:50:16] <andypugh> JT-Shop: I am not sure I can bear to listen much longer, what part of the weather being a bit chilly does he blame the government for?
[18:53:45] <JT-Shop> lol he ends up telling you to build a 50-200 watt solar panel and use a cordless screwdriver motor to build a wind mill
[18:55:49] <andypugh> It will work, but he seems to be glossing over the inverter and controller part.
[18:56:09] <Jymmm> JT-Shop: LOL, read the whole thing, but the BEST is the last paragraph http://www.power4home.com/bottom-menu/earnings-disclaimer/
[18:56:20] <JT-Shop> but it won't power you whole house and give you a check from the elec company each month
[18:56:46] <JT-Shop> LOL that is funny
[18:57:08] <Jymmm> JT-Shop: Actually, I saw a wiper motor produce 12v@8A easily by hand cranking
[18:57:35] <Jymmm> JT-Shop: http://www.youtube.com/watch?v=RgRT6WAStaE
[18:58:51] <andypugh> At the moment I am running a 150W PC and a couple of 24W lights. And if you have batteries to store power during the say, 200W will help. But it won't boil a kettle or heat the house.
[18:59:13] <andypugh> Ah, he just mentioned a way to get the inverter for free from the power co.
[18:59:23] <Jymmm> heat generated from electricity if very inefficiant
[18:59:59] <andypugh> Thermal solar is the way to heat.
[19:02:26] <andypugh> "Think you have to employ a high-paid expert to install your power system"? Well, actually, yes, I think that the regulations are quite clear on that point. Not that I generally pay any attention :-)
[19:04:48] <Jymmm> geo thermal is REALLY the way to go
[19:04:52] <andypugh> I would be amazed if any electrician could read that talk out that clearly, that error free in one take like that. That's quite a skill.
[19:05:31] <Jymmm> Not steam, the natural 54F at 8ft below ground level
[19:06:10] <Jymmm> JT-Shop: how many acres you on?
[19:09:17] <Jymmm> andypugh: The storage of energy for night usage at the test plant was molten salt.
[19:09:47] <Jymmm> I think the plant produced 10MW
[19:10:01] <Jymmm> all pure solar
[19:17:08] <JT-Shop> Jymmm, 9
[19:18:19] <Jymmm> JT-Shop: how much of it is land (vs sea/water) ?
[19:19:30] <JT-Shop> depends on the season
[19:19:45] <Jymmm> lets say wet season
[19:20:39] <Tom_itx> 9 swamp acres
[19:21:19] <Jymmm> JT-Shop: But either way, I think you could seriously benefit from geo thermal. You or you know someone that can drill you a well or two can dig ya a deep hole and lay in some tubing
[19:21:54] <Tom_itx> just don't drill on a fault line
[19:22:46] <Jymmm> I doubt there is anything you could do to a fualt line that would make any impact.
[19:23:10] <Tom_itx> there has been talk about that in places i believe
[19:23:22] <Tom_itx> err maybe it was oil drilling
[19:23:38] <Jymmm> Besides, I dont think swampsouri close to the circle of fire =)
[19:23:49] <Jymmm> mayeb oil drilling I could see.
[19:23:52] <Tom_itx> no but it is on a major fault
[19:24:02] <Tom_itx> Mo is
[19:24:03] <Jymmm> which one?
[19:24:10] <Tom_itx> i'm not sure
[19:24:37] <Tom_itx> there was a 5.xx here recently i believe
[19:24:41] <Tom_itx> maybe 4.xx
[19:24:49] <Tom_itx> near OKC
[19:25:03] <Tom_itx> we felt it here
[19:25:13] <Tom_itx> 2.5 hrs N
[19:25:16] <Jymmm> Oh, the SE corner of MO is
[19:25:31] <Jymmm> http://www.huffingtonpost.com/2010/01/22/us-fault-lines-graphic-ea_n_432948.html
[19:26:08] <Tom_itx> isn't he in Swampeast Mo?
[19:26:26] <andypugh> There is some concern that "fracking" might have caused an earthquake, and at least one borehole has been blamed for a rahter destructibe muf volcano.
[19:26:35] <andypugh> (mud volcano)
[19:26:56] <Jymmm> JT-Shop: What is your lat/lon to the 48th significant digit =)
[19:27:38] <andypugh> http://www.wired.com/wiredscience/2010/02/mudvolcano/
[19:28:27] <JT-Shop> Jymmm, 63901
[19:28:55] <andypugh> If you want the 48th significant digit you will need to specify which electron in which atom in which cell of his body you want the location of. But it will only be accurate briefly.
[19:29:26] <Jymmm> Heh, JT-Shop is in shake rattle and roll country =)
[19:30:00] <Jymmm> andypugh: I only requested lat/lon, not azimuth =)
[19:30:14] <Jymmm> nor elevation
[19:30:38] <andypugh> Good point. You need to be more specific about your choice of geoid.
[19:30:51] <Jymmm> Maidenhead
[19:31:26] <Jymmm> andypugh: http://en.wikipedia.org/wiki/Maidenhead_Locator_System
[19:32:18] <Jymmm> We should ALL use it for everything, mail, directions, shipping, surveying, etc
[19:34:18] <andypugh> I am not sure I really want to locate Maidenhead.
[19:34:58] <andypugh> Except that it is amusingly an archaic name for the Hymen.
[19:36:54] <Jymmm> What, you don't want your 72 virgins?
[19:37:10] <Jymmm> They never said the virgins had to all be femae either =)
[19:37:16] <Jymmm> female
[19:39:33] <Jbunch> Thanks all we now have RPM. Off to closed loop spindle control.
[19:42:52] <Jymmm> andypugh: http://no.nonsense.ee/qthmap/?qth=CM87ST98GN&from=CM87ST98EO
[19:43:20] <andypugh> Jbunch: The wiki page is a bit confused. The most effective way to tune the PID for closed-loop control is to use the right amount of FF1 (the number should be exactly the same as you would use for open-loop speed control)
[19:43:46] <Jymmm> andypugh: Any place on earth in 10 characters... CM87ST98EO
[19:44:43] <Jymmm> You could easily QR/barcode that if you wanted to
[19:46:04] <andypugh> I appear to be JO01GN09OP
[19:46:09] <jdh> down to 89F outside, 73F in the garage.
[19:46:51] <Jymmm> andypugh: http://www.levinecentral.com/ham/grid_square.php
[19:47:07] <Jymmm> andypugh: most just apx to 6 chars
[19:48:34] <andypugh> About 50 miles from IO91PM
[19:48:54] <Jymmm> andypugh: do you live where there is a slight bend in the road?
[19:50:30] <Jymmm> andypugh: Is this you? http://i46.tinypic.com/dvsq60.jpg
[19:50:51] <andypugh> No, I live at the end of the road. Though Google Maps is rather unclear on that point.
[19:51:00] <Jymmm> ah
[19:51:24] <andypugh> But yes, my garden is the one in the middle fo that red square
[19:51:52] <Jymmm> I think the red outline is the scale at which 10 chars of maidenhead grid goes to. Imagine 12 or 16 chars?!
[19:52:21] <Jymmm> each pair is a factor of 10
[19:53:21] <Jymmm> err 100 that is
[19:53:22] <andypugh> You have to be carful with your geoids at that point. Actually, you have to be careful at the 6 digit level.
[19:53:35] <Jymmm> heh, whys that?
[19:54:22] <andypugh> Actually, I might mean the reference elipsoid
[19:54:50] <Jymmm> Great Circle stuff?
[19:55:38] <Jbunch> andypugh: how do you force output to only + voltages?
[19:55:43] <Jymmm> It does it as a flat earth, so eh. I still like it =)
[19:56:02] <andypugh> The Lat and Long are referenced to the centre of the earth, they keep changing their mind about where that is. Also, they keep improving the accuracy of the meathematical not-quite-a-sphere that maps are projected on to.
[19:57:17] <Jymmm> andypugh: I think it does a good job now, I really dont need to track molecules on earth
[19:57:57] <andypugh> This change was partly responsible for: http://www.gov.je/SiteCollectionDocuments/Travel%20and%20transport/R%20Grounding%20of%20Clipper%20CV4%20aka%20Cork%2020100124%20RH.pdf
[20:02:07] <andypugh> Basically as they zoomed in on the chart plotter they switched from charts to WGS84 (where GPS positions can be directly plotted) to a different reference. Which put a rather solid island about 2 miles from where the GPS said it was. http://en.wikipedia.org/wiki/WGS84
[20:03:05] <andypugh> (In point of fact the reef was probably initially located by a man with a sextant, so a 2 mile error is pretty good)
[20:07:45] <andypugh> Jbunch: Ah, just noticed that question.
[20:09:13] <andypugh> You might be able to use an "abs" component in HAL, but that can cause problems.
[20:10:01] <andypugh> (if the PID reduces below zero, then the spindle speeds up, and so the PID reduces lower, which becomes a bigger absolute number, and so on to spindle runaway.
[20:11:15] <andypugh> A better thing to use is a "limit1" block between the output of the PID and the PWM generator: http://www.linuxcnc.org/docs/html/man/man9/limit1.9.html
[20:12:21] <Jbunch> Thanks I will give it a try.
[20:12:34] <andypugh> I am rather of the opinion that this function should be built-in to the PID component
[20:14:33] <andypugh> Maybe PID needs a "unipolar" bit,
[20:14:42] <andypugh> Anyway, time to sleep.
[20:18:27] <Jbunch> Thanks
[21:14:13] <r00t4rd3d> sleep is for wussies
[21:22:54] <taiden> evening gents
[21:23:26] <taiden> i'm trying to set g92 offset from machine coordinates. any way to do that?
[21:23:57] <taiden> only way I can figure is to move to a location with g53 and then set that as zero with g92 but i want to avoid crashes by doing it without movement
[22:28:33] <r00t4rd3d> My MDF has met its end:
[22:28:33] <r00t4rd3d> http://i.imgur.com/JU45y.jpg
[22:29:22] <r00t4rd3d> oak :)