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[07:33:31] <Loetmichel> hmmm... is there a reason that my CNC PC (installed from the 10.04 live cd) tells me "cannot suspend" uon trying to send it to sleep? 'cause the 1HE PSU is really annoying inf the CNC is not used and the PC runs
[07:33:33] <Loetmichel> -n
[07:43:04] <Poincare> Loetmichel: I don't know if that's supposed to work, but putting a real-time system to sleep mode doesn't sound right :-)
[08:08:18] <Loetmichel> Poincare: tought so, just wanted to have confirmation... ok, than i have to get a 1HE PSU without the annoying 40mm fans ;-)
[09:06:22] <mrsun> hmm one of these magnetic tables, how far out can pieces be and still be sucked down hard? :)
[09:06:32] <mrsun> i need to offset a piece like 1cm off the actual table by parallels
[09:16:41] <cradek> I believe they make magnetic parallels that conduct the force
[09:17:07] <mrsun> oh that sucks, cause the place that i can do it at doesnt have fancy stuff like that =)
[09:17:18] <Loetmichel> that should do any parllel which is made of steel
[09:18:02] <Loetmichel> just place the paralles so that they only catch ONE bar of mangets
[09:18:04] <mrsun> i was thinking of laying the parallels, putting the table on and set a couple of blocks at the ends of the table also to make it not able to move sideways =)
[09:18:20] <mrsun> Loetmichel, and how the heck do you do that? :P
[09:18:37] <Loetmichel> you can see the alternating brass/steel sections?
[09:18:54] <Loetmichel> just get the parallels on only one steel section
[09:19:04] <Loetmichel> like 10 by 10mm parallels
[09:19:07] <mrsun> Loetmichel, ye, but tehy go all zig zaggy over the wrong way =)
[09:19:17] <Loetmichel> hmm?
[09:19:19] <mrsun> |||||| like that
[09:19:23] <mrsun> not =====
[09:19:24] <mrsun> like that =)
[09:20:07] <Loetmichel> so place the parallels also |.|.| and so on
[09:20:07] <mrsun> and the table moves < |||||| > ... and the thing im grinding is not able to set the other way around, it has to be by the length of the magnetic table =)
[09:20:43] <mrsun> Loetmichel, cant as the rising up has to be under the ways of the part im grinding ...
[09:20:58] <mrsun> its a table for a mini mill and i want the table to be parallel to the sliding surfaces
[09:21:02] <Loetmichel> just test it with a plastic hammer if you got the right magnet rails ;-)
[09:22:02] <Loetmichel> ah, you try to grind a part which has only ========================== on the bottom?
[09:22:45] <Loetmichel> should STILL work if you place enough parallels ||||||||| under it.
[09:22:49] <mrsun> its the top side of the table that is going to be ground
[09:23:05] <Loetmichel> just dont "short circuit" 2 adjacent magnet rails
[09:23:12] <mrsun> and the sliding surface is a bit stupid placed on the mill
[09:23:26] <Loetmichel> then the holding force on top of the parallels will disappear
[09:23:46] <mrsun> oh it goes throught the metal then if i get it as it should? :)
[09:24:26] <Loetmichel> steel tends to "bundle" magnetic Field lines
[09:25:04] <Loetmichel> so if you place a parallel on ONE magnet rail it bundles the force field upwards
[09:26:03] <Loetmichel> if you place it on two opposite "poled" magnetic rails it will "short" them and on the top of the parallel will be near zero field lines
[09:26:57] <mrsun> hmm ok that sucks
[09:27:10] <mrsun> i guess i could do it with a whole bunch of little tiny parallels :P
[09:27:21] <mrsun> tho then i would have to grind little tiny parallels first :P
[09:27:29] <Loetmichel> yes
[09:29:07] <mrsun> the table im clamping to looks like this on the top
http://www.uptechengineering.com/tables31.gif and i have to place the part down over all those strips
[09:31:14] <mrsun> http://www.magnetic-lifter.com/upfile/201177152346.jpg there, that looks almost identical =)
[09:32:45] <Loetmichel> thats the reason why i use much double sided tape for workpiece clamping on my mill....
[09:33:08] <Loetmichel> ... and of course because aluminium/plastic magnets are still not invented ;-)
[09:36:12] <Mjolinor> you can sort of get aluminium magnets
[09:36:31] <Mjolinor> but they wont hold thigns down, only repel each other
[09:36:36] <Loetmichel> hihi
[09:36:52] <Loetmichel> with AC power, jes, could work
[09:37:14] <Mjolinor> they use it to sort aluminium from general rubbish in recycling plants I think
[09:37:15] <Loetmichel> circulating current in the aluminium ;-)
[10:26:18] <Gromits> Anyone know if there is a script (or a simple way) to convert an existing PYVCP config to GladeVCP?
[10:46:08] <cradek> Gromits: I don't think so. They are totally different.
[10:50:43] <skunkworks> another thing to play with
[10:57:54] <mrsun> hmm, to get the resolution of a 24 bit adc with 8 bit adcs, wouldnt that be possible using 3 8 bit adcs and some voltage dividers
[10:58:10] <mrsun> no im stupid :P
[10:58:34] <mrsun> was thinking that the first one gets 0 - 1V 2nd gets 1 - 2V 3d gets 2 - 3V :P
[10:59:07] <Mjolinor> yes it would be possible
[10:59:36] <Mjolinor> vref would take some setting though :)
[11:00:44] <mrsun> but would it be a 24 bit adc? :P
[11:00:59] <Mjolinor> thinking
[11:01:03] <Mjolinor> should be possible :)
[11:01:06] <mrsun> 255 + 255 + 255 != like a couple of million :P
[11:02:26] <Mjolinor> you would need more than voltage dividers
[11:03:15] <Mjolinor> you waould have to take an 8 bit of the whole thing then use the output fmor that as an offset for the next 8 bits then use the output of that as an offset for the next
[11:03:22] <Mjolinor> that should give oyu 24 bits I think
[11:03:34] <Mjolinor> seems a tad over kill when you can buy a 24 bit so easily :)
[11:04:49] <mrsun> Mjolinor, yes but 24bit fast adcs is expensive :P
[11:05:21] <Mjolinor> true but by the time you had gated what you needed with the 8 bits I think it would be too slow anyway
[11:05:46] <mrsun> ye :P
[11:06:05] <Mjolinor> intereestign problem though that
[11:06:12] <Mjolinor> be a good one for an exam paper
[11:08:16] <mrsun> if it taxes 3x the time, a 24bit adc at 4Msps cost about 40$, 3x 8bit 15 Msps cost 10.2 usd :P
[11:09:18] <Mjolinor> but you need a lot more circuitry too
[11:10:20] <mrsun> ye :P
[11:10:40] <Mjolinor> actually though you shouldn't
[11:11:17] <Mjolinor> jus take the output of the first and use it as an offset on the second and the second will have a much lower Vref so it shoudl all work pretty well I think
[11:12:02] <mrsun> but one would have to dac the output also :P
[11:12:22] <Mjolinor> well you didnt mention that :)
[11:12:35] <Mjolinor> that si a lot easier though anyway
[11:12:57] <mrsun> Mjolinor, i ment to use it as a offset for another vref
[11:12:59] <Mjolinor> if you think of it in terms of 3 X 1 bit a / d it is easier to imagine how to do it
[11:13:09] <Mjolinor> ok
[11:13:10] <Mjolinor> yes
[11:13:12] <Mjolinor> your right
[11:13:54] <mrsun> but wouldnt it all fall if you were near the top of the measuring?
[11:14:00] <Mjolinor> there is a way without
[11:14:07] <Mjolinor> if the A/D was circular
[11:14:12] <mrsun> say 0 - 1V and the first adc gets 1V DAC that to the next for vref there, that one also got 1V
[11:14:35] <Mjolinor> eg is you have a one bit a/d that has a threshold of 0.5 votls
[11:14:50] <Mjolinor> above that its a1 below it is 0
[11:15:06] <Mjolinor> so if the voltage is 0.6 the output will be a 1
[11:15:20] <Mjolinor> the next one needs to be circular and overflwo back to 0 with no carry
[11:15:39] <Mjolinor> so it will go 0 1 0 so the output will be 0
[11:15:50] <Mjolinor> with a 0.25 vref that is
[11:15:51] <Mjolinor> :)
[11:15:58] <Mjolinor> not sure you scould find somethign to do that
[11:16:38] <Gromits> ok, that's better. hardwired ethernet. flaky wifi, sheesh...
[11:26:49] <pcw_home> I dont think there really are any 4 Msps 24 bit A-Ds (look at the noise performance at 4 Msps)
[11:26:51] <pcw_home> (other than cryogenic exotica)
[11:33:06] <pcw_home> Johnson noise of even a low 50 Ohm input converter would limit you to around 20 bits
[11:33:08] <JT-Shop> anyone have an idea of the SFM for drilling oak?
[11:46:05] <Gromits> When I try to run "glade hw.ui" it comes up, but I get a pile of warnings and critical messages:
http://pastebin.com/ukfus6F8 Am I missing something or is this normal?
[11:47:14] <cradek> the last part maybe you can fix by installing the libgtksourceview package
[11:47:50] <cradek> but unfortunately, in general gtk apps like to spew nonsense that can usually be ignored :-/
[11:49:01] <Gromits> do I just need to run "apt-get install libgtksourceview" or do I need a version number on it like: libgtksourceview2.0 ?
[11:49:14] <cradek> I'm not sure
[11:49:31] <bill20r3> "apt-cache search libgtksourceview"
[11:49:32] <cradek> perhaps libgtksourceview2.0-dev
[11:49:35] <bill20r3> and see what the package name is.
[11:49:48] <cradek> yes, I see three
[11:49:52] <cradek> I bet installing -dev will do all three
[11:50:14] <cradek> there are also packages related to vte, which is something to do with your other CRITICAL message
[11:51:48] <Jymmm> Are you guys aware of a "Works Bomb" by chance?
[11:52:19] <Gromits> cool, libgtksourceview2.0-dev got rid of about half the messages....now vte.... and thanks!
[11:53:51] <Jymmm> "The Works" is a toilet bowl cleaner that contains hydrochloric acid. So Hydrochloric Acid + Aluminium Foil = BOMB
[11:54:20] <Jymmm> I guess kids are seeing these videos and tossing in mailboxes, front yards, etc.
[11:54:31] <bill20r3> you mean sealed up in something airtight?
[11:54:37] <bill20r3> like a dry-ice 'bomb' ?
[11:54:38] <Jymmm> soda bottle
[11:54:46] <alex4nder-> we used to do that 15 years ago
[11:54:52] <alex4nder-> around and around it goes
[11:54:57] <Jymmm> http://www.metacafe.com/watch/307550/how_to_make_a_works_bomb/
[11:55:12] <Jymmm> http://www.snopes.com/crime/warnings/bottlebomb.asp
[11:55:18] <alex4nder-> bill20r3: this is more interesting because the hydrogen burns
[11:55:21] <bill20r3> ahh.
[11:55:31] <bill20r3> but the explosive force is the pressure, right?
[11:55:41] <Jymmm> I like dry ice bombs, but HCL is some nasty shit.
[11:56:00] <Gromits> apt-get install libvte-dev took care of the other critical warning
[11:56:06] <alex4nder-> bill20r3: yah,.. and it's even better because the reaction is exothermic
[11:56:25] <Jymmm> I only mention it because we all work with aluminum and have chemicals around the shop.
[11:56:33] <alex4nder-> yah
[11:56:38] <alex4nder-> don't get any drain-o on your stock
[11:56:57] <Jymmm> Also, it seems kids think it's fun to toss in ppl's yards and mailboxes, so if you see a soda bottle in your yard, be careful
[11:57:01] <Gromits> now it's down to a manageable couple dozen warnings of blah blah blah....
[11:57:03] <bill20r3> especially if you store it in sealed soda bottles
[11:58:40] <Jymmm> This guy looks intelligent, but it a dumbass...
http://www.youtube.com/watch?v=wYS_KK_kmNY
[11:58:52] <Jymmm> and indoors?! WTF
[12:00:12] <pcw_home> exploding acid now that's smart... just like a dry ice bomb but much more likely to blind you
[12:00:27] <bill20r3> good times.
[12:01:04] <cradek> you can tell he's smart because he has a lab coat
[12:02:02] <cradek> he also doesn't know how to use apostrophes
[12:02:08] <Jymmm> cradek: Well, he speaks intelligently too.
[12:02:19] <cradek> no sound here
[12:04:12] <Jymmm> cradek: ah
[12:05:25] <Jymmm> pcw_home: dry ice bombs tossed in trashcans/dumpsters is kinda fun. But chemical/exo reactions with acids is just stupid imo.
[12:08:05] <IchGucksLive> Hi all
[12:11:45] <IchGucksLive> today no rain since this weekend wars full of
[12:26:02] <MattyXP> worst soda bottle bombs I've seen are at donnington rock festival. it's a long walk to those portaloos
[12:27:09] <MattyXP> there's a traditional empty bottle fight, but watch out for the ones that aren't empty
[12:28:07] * MattyXP too old for such foolishness now. zz top were headlining when I was there
[12:38:59] <IchGucksLive> ther are al "old BOYS " here B)
[12:54:12] <isssy> http://www.ti.com/lit/ds/symlink/amc1204.pdf
[12:54:18] <isssy> oops
[14:20:48] <andypugh> I could have done with this machine on Saturday:
http://blog.hemmings.com/index.php/2007/08/08/diary-of-a-mercer-mechanic-leblond-conrod-lathe/
[14:21:05] <andypugh> Ended up improvising with a milling machine.
[14:27:29] <Jymmm> andypugh: do you have ANY type of lathe?
[14:28:49] <andypugh> Yes. I have a 7x14 CNC conversion, a 1939 Colchester Triumph and access to a 1970s COlchester student. I can't imagine not having easy access to a lathe.
[14:30:51] <Jymmm> andypugh: Ok, then why would you need to use a mill for your project?
[14:31:05] <andypugh> Did you look at the web link?
[14:31:31] <andypugh> That isn't a ltahe.
[14:31:58] <jdhNC> what motors on the 7x?
[14:32:07] <Jymmm> andypugh: it says lathe
[14:32:29] <andypugh> 1.5hp 3-phase on the spindle, and Nema 23 steppers on the axes.
[14:32:44] <andypugh> Jymmm: It's a conrod boring lathe.
[14:33:32] <Jymmm> andypugh: and thats different from a mill how?
[14:33:57] <andypugh> Well, if you look at the pictures, you will see.
[14:34:15] <jdhNC> how big are the 23's?
[14:34:52] <andypugh> I have a 2-stack on the X and 3-stack on the Z. The X is OK, but the Z is a bit weak.
[14:35:20] <jdhNC> I have one in the corner, waiting in time and parts
[14:35:41] <Jymmm> andypugh: I'm clueless when it comes to lathes =)
[14:36:57] <andypugh> jdhNC: I wouldn't bother doing it again, the base machine is basically rubbish compared to a real lathe.
[14:37:26] <jdhNC> I've found good pricea on mills and lathes vut not on motors/drivers and time.
[14:37:42] <andypugh> Motors and drivers are best found on eBay
[14:38:09] <jdhNC> they cost a lot more than the machine
[14:38:16] <Jymmm> jdhNC: When you find a good price on time let me know. I could use an extra 20-80 years. Also, if you find OLDER time, that would be even better =)
[14:38:44] <andypugh> jdhNC: That might tell you something about the machines.
[14:39:19] <jdhNC> sure, but for me they are ok
[14:40:35] <jdhNC> perhaps I could ditch the wife and kids... nah
[14:49:47] <andypugh> Jymmm: Yeah, I would like to buy another batch of 1990s.
[14:50:43] <jdhNC> I'd like to redo the 80's
[14:51:22] <andypugh> True, I could probably make a better job of them now, having non-zero self confidence now.
[14:52:36] <jdhNC> yep
[15:12:57] <awallin> is there any way to have nested comments in liuxcnc g-code ??
[15:15:39] <andypugh> "nested"?
[15:16:05] <rob_h> mean, (comment1(comment2))
[15:17:19] <rob_h> if so, no there is not any way to do it. i asked a long time back
[15:19:24] <Jymmm> Ok, gimme a 1986 and 2004 if you would.
[15:25:26] <awallin> oh, ok..
[15:29:16] <mrsun> and for the tedious thing called, making the column squared to the table .... sigh
[15:32:47] <andypugh> mrsun: D you have a coaxial indicator?
http://www.youtube.com/watch?v=ZfioLDhBNBQ
[15:33:18] <mrsun> andypugh, nop :/
[15:33:28] <mrsun> and question is if the spindle itself is squared to the column :P
[15:33:43] <mrsun> have to measure that also, so it doesnt point inward or outward from the start with ...
[15:34:00] <mrsun> and i wish it was only the head that tilted
[15:34:01] <andypugh> Well, the beauty of doing it that way is that you are measuring the squareness of the table to the spindle axis.
[15:34:04] <mrsun> not the whole freakin column
[15:34:43] <mrsun> andypugh, yes, and that is good, but if the spindle is not parallel with the column, moving down means also moving forward or backwards a tiny amount
[15:35:16] <andypugh> Ah. Yes.
[15:35:49] <andypugh> That does only square the spindle to the table, not the table to the column.
[15:35:57] <mrsun> mm
[15:36:16] <andypugh> Anyway, they are a nice toy, and that chinese knock-off of the real thing is quite cheap:
http://www.machine-dro.co.uk/dial-co-axial-centering-alignment-indicator-metric.html
[15:37:29] <mrsun> andypugh, yeah ive been thinking about buying one, have to be real nice to center over holes etc also =)
[15:37:55] <andypugh> They are quite long though. You might find that you don't have room for it.
[15:38:14] <mrsun> mm
[15:38:23] <mrsun> 160mm with shortest tip
[15:47:59] <mrsun> i want to fix the column tho, do not like the tilt function of stupid super x1 =)
[15:49:24] <mrsun> tilt the work not the mill imo :P
[16:55:54] <mrsun> yeah, if you have a sine table you realy want to use a digital angle measurer that goes down to +- 0.1degree .. or not ...
[16:56:05] <mrsun> freakin use guage blocks and get real accuracy :P
[16:57:21] <syyl> ah btw
[16:57:32] <syyl> my vice before scrapeing
[16:57:40] <syyl> http://dl.dropbox.com/u/24396704/2012-01-20_17-36-51_576.jpg
[16:58:33] <syyl> not a very good contact pattern ;)
[16:59:27] <syyl> some work with the scraper...
[16:59:29] <syyl> http://dl.dropbox.com/u/24396704/2012-01-20_19-05-27_884.jpg
[16:59:40] <syyl> better...
[17:00:06] <DaViruz> probably preferable to a convex pattern though?
[17:00:19] <syyl> i prefer flat ;)
[17:00:53] <syyl> http://dl.dropbox.com/u/24396704/2012-01-20_21-39-22_799.jpg
[17:00:56] <syyl> and parallel...
[17:01:25] <syyl> the numbers are in 1/1000mm deviation from the surface plate...
[17:01:33] <syyl> works for me :D
[17:01:42] <DaViruz> i see a weller ws*8* in the background
[17:01:52] <syyl> jip
[17:02:05] <mrsun> DaViruz, yes, its prefered if the contact points are in the ends insted of the middle =)
[17:02:35] <mrsun> as if its in middle you almost have to scrape it the other way to be able to realy know that you contact it flat =)
[17:03:04] <syyl> yeah, then its prone to tip while spotting
[17:03:45] <DaViruz> i'm prone to tip while spitting
[17:03:47] <DaViruz> due to recoil
[17:03:53] <syyl> interesting ;)
[17:03:56] <andypugh> That's posh! Mine is a PU-2D with banana plugs for bare wires.
[17:03:59] <DaViruz> yeah i know
[17:04:22] <mrsun> DaViruz, well Chuck Norris would definentley tip you if he spat at you!
[17:04:54] <syyl> hihi, we still have one pu-2d at work
[17:05:00] <DaViruz> i'd jsut duck so he'd hit himself in the back of the head
[17:05:09] <syyl> sitting in the shelf
[17:05:30] <mrsun> DaViruz, you wouldnt be able to duck as he spits faster then the speed of light
[17:05:48] <mrsun> in Chuck norris case m = e^10
[17:05:53] <DaViruz> of course i would, i just have to duck before he spits
[17:05:53] <mrsun> wait
[17:05:58] <mrsun> wth
[17:06:00] <mrsun> was that
[17:06:16] <mrsun> e = mc^10
[17:06:17] <mrsun> :PÅ
[17:06:20] <syyl> but he allready knows when you are going to duck
[17:06:24] <syyl> so he will aim lower :D
[17:06:24] <DaViruz> mass equals the natural number to the tenth power?
[17:07:38] <DaViruz> syyl: i can't get out, can i?
[17:07:49] <syyl> dont think so
[17:07:51] <syyl> you are doomed ;)
[17:08:09] <DaViruz> i guess that's ok, i need a shower anyway
[17:08:16] <syyl> haha
[17:08:27] <syyl> right, take it like a man
[17:12:04] <syyl> ok, time to leave
[17:12:05] <syyl> ahoi
