#emc | Logs for 2011-09-25

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[00:43:02] <andypugh> Wierd eBay ads. There might be bargains here, but how would you know?
[00:43:32] <andypugh> http://www.ebay.co.uk/itm/120784112410
[00:43:59] <andypugh> http://www.ebay.co.uk/itm/120784105036
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[00:45:10] <andypugh> http://www.ebay.co.uk/itm/120784099852
[00:45:50] <Tom_itx> just a grab bag of junk?
[00:45:54] <andypugh> I can believe that those lots contain parts worth thousands. Or pennies. Hard to say
[00:47:38] <elmo40> [off topic... again] vacuum update. the Dyson DC33 rocks! I compared it to the DC25(the ball) and the (small) DC24 and it blew them away. Larger dirt canister and stronger motor. $400. Pricey but compared to the Hoover at $600, other then a few attachments I may or may not use, it had nothing on the Dyson. I made a simple suction test, along the lines of inches of water, where I used a bucket of water and a clear hose a
[00:47:43] <andypugh> I think I see limit switches, and possibly encoders.
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[00:48:40] <andypugh> I like Dyson, almost entirely because I feel that James Dyson is one of us :-)
[00:49:06] <andypugh> A man who has spent almost his whole life in a shed, tinkering.
[00:49:15] <Tom_itx> yup
[00:50:15] <elmo40> I looked up the latest creation, Dyson DC43. They revamped the 'ball'. I think it will work MUCH better then what they have now.
[00:50:24] <elmo40> more line of sight for dirt to enter the 'vortex' thingy
[00:50:30] <elmo40> http://www.english.dysoncanada.ca/store/product.asp?product=DC43-IRSPU
[00:51:11] <Tom_itx> i think he thinks it's better than it is
[00:52:02] <elmo40> it is difficult to get specs from other vendors... Air Watts is what they all should have freely listed on websites/stores.
[00:53:04] <elmo40> have to say, very light machine. I am worried of breaking it :P
[00:53:38] <Tom_itx> maybe he'll come out with a carbon fiber variant
[00:53:48] <elmo40> but they claim it is made from the same material hockey helmets are made from. that may be true but I doubt it is as thick... plus ribbing is a little lacking in some critical areas.
[00:55:13] <elmo40> they attachments are WAY over priced. A normal '5" stiff bristle brush' is $25!
[00:55:24] <andypugh> They don't break. Everybody I know has a Dyson nowadays, and they take the knocks.
[00:55:34] <Tom_itx> i'd think the ball would pick up alot of dirt just from static buildup
[00:56:39] <andypugh> They also sell all the spares. I have seen the call-centre and they have examples of all the products in the room so that they can talk callers through the machines. (I went there for a job interview)
[00:56:58] <Tom_itx> not some indian support person??
[00:57:00] <Tom_itx> :)
[00:59:01] <andypugh> They might well be Indian, but they live in Malmesbury
[00:59:38] <andypugh> At the end of the day, they are just vacuum cleaners. How much do you care?
[01:00:02] <Tom_itx> I don't
[01:00:19] <elmo40> now if only they made a functional dish washer...
[01:00:54] <Tom_itx> all the features aren't going to impress the average person so in the end on the shelf it's just another vacuum
[01:01:05] <andypugh> I think some of them use a brushless motor, which might make them better for vac-table and extract use :-)
[01:01:17] <Tom_itx> the handhelds may
[01:02:19] <andypugh> http://www.electronicsweekly.com/Articles/2010/08/13/46377/dyson-vacuums-104000rpm-brushless-dc-technology.htm
[01:02:20] <Tom_itx> just open up the back door and run the compressor hose thru
[01:04:30] <andypugh> Actually, that's a very interesting article, you get an impression of their sense of engineering values.
[01:10:35] <elmo40> andypugh: I don't care about the 'average consumer'... id like to think I am educated enough to know a good vacuum on the shelf and a mediocre vacuum, from My tests, not the sales brochure :) (or what colour it comes in)
[01:13:33] <elmo40> I would like to work for them :)
[01:13:37] <andypugh> I had a very surreal experience with a vacuum salesperson once. They were trying to sell me a Oreck, I think. "You would use this setting 2 or three times a week, and the lower setting the rest of the time". I don;t think we were in the same wavelength. I vacuum when there is too much visible swarf and somebody is likely to visit.
[01:15:07] <andypugh> Interesting sales tosh: http://www.oreck.com/Oreck-XL-Classic-Vacuum-Cleaner-Clearance
[01:16:14] <andypugh> "the Oreck direct suction advantage" Seems to indiacate that the Dyson wiggly air path is a bad thing, whereas to a large extent it is the whole point.
[01:16:32] <elmo40> too bad they are mainly hiring in the UK
[01:17:10] <andypugh> They are a UK company, and I think that Dyson is keen to keep it that way.
[01:17:43] <elmo40> meh
[01:17:54] <andypugh> There are worse places to live, it's like the US, but much smaller.
[01:18:15] <andypugh> You can travel 50 miles and the geography changes.
[01:19:10] <Tom_itx> i'd like to visit some time
[01:19:30] <elmo40> 4 options: USA United Kingdom Malaysia Singapore
[01:20:56] <Tom_itx> or Swampeast Missouri
[01:21:25] <andypugh> Singapore is very, very, hot and humid. It does feature pretty girls in very short skirts. My friends who have worked there say that isn't sufficient compensation for the weather.
[01:23:03] <andypugh> 02:22, it is getting close to the time that I decide to stay up to watch the Fiji v Tonga match.
[01:23:35] <elmo40> rugby>
[01:23:35] <elmo40> ?
[01:23:52] <andypugh> Is there another sport?
[01:23:55] <elmo40> didn't canada beat tonga?
[01:24:04] <andypugh> Apart from cricket, of course
[01:24:19] <andypugh> Everyone beats Tonga
[01:24:32] <andypugh> And everyone beats Fiji
[01:26:27] <andypugh> There are 34 million Canadians, 1 million Fijians, and 100,000 Tongans. Its surprising that Tonga can even field a team.
[01:27:11] <andypugh> It's probably because they are a fairly bulky lot, so gymnastics is out.
[01:31:08] <andypugh> Would you expect the Rugby team of Springfield, Missouri to beat Canada? They have 50% more people than Tonga. (OK, so sometimes having access to Wikipedia is not altogether good)
[01:31:36] <Tom_itx> heh
[01:34:41] <andypugh> I do like Rugby, it's the combination of physicality and discipline. The players need to know what they can do at any one time, for example unless someone has the ball you can't actually touch them. If they do have the ball (and have one foot on the ground) you can touch them as hard as you like. The referee spends most of his time telling the players what they are allowed to do.
[01:35:12] <elmo40> I love it! http://imgs.xkcd.com/comics/purity.png
[01:35:47] <andypugh> "roll away", "it's a ruck", "it's a maul", "no hands", "number 5, you are offside"
[01:37:04] <andypugh> xkcd is normally very good. I hated the escalator/chin-up-bar one.
[01:42:11] <andypugh> But I was living locally when the King's Cross escalator fed hundreds into a fire, and know that a blockes escalator simply kills people.
[01:47:53] <Jymmm> 1) I like this guy's personality (watch a couple of his videos). 2) What kind of cutter is that at 25:04 ? http://www.youtube.com/watch?v=upd1-Eb9300&feature=channel_video_title
[02:03:31] <toastydeath> looks like an improv boring bar to me
[02:03:39] <toastydeath> lathe boring bar in a mill
[02:14:24] <Jymmm> Ah, just never seen something like that before.
[02:16:41] <andypugh> Ah, I just remembered, we don;t just make expensive vacuum cleaners in the UK, we make expensive machine clamps (Carver)
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[02:24:11] <andypugh> That's not a boring bar, it's a fly cutter.
[02:25:28] <Tom_itx> yeah, singlepoint fly cutter
[02:26:03] <Tom_itx> kindof a steep angle
[02:31:12] <andypugh> As I understand it, a fly cutter is always single-point
[02:34:30] <toastydeath> I assure you that's a boring bar
[02:34:48] <toastydeath> I had a whole rack of those at the old shop
[02:35:02] <andypugh> I assure you that my opinion difffers.
[02:35:41] <KimK> Hi gents, I just joined, what was the URL?
[02:36:00] <Jymmm> KimK: 2011-09-24 18:47:53 Jymmm: 1) I like this guy's personality (watch a couple of his videos). 2) What kind of cutter is that at 25:04 ? http://www.youtube.com/watch?v=upd1-Eb9300&feature=channel_video_title
[02:36:00] <andypugh> http://www.youtube.com/watch?v=upd1-Eb9300&feature=channel_video_title
[02:36:32] <Tom_itx> i suppose the others are shell mills
[02:36:35] <Tom_itx> you're right
[02:37:08] <Tom_itx> or a misuse of a boring bar
[02:39:35] <toastydeath> this guy is doing a lot of work for what should be a pin router job
[02:39:56] <Tom_itx> i guess you use what you got
[02:40:15] <A2Sheds> I think he just likes to play in his shop with whatever he has
[02:40:19] <toastydeath> Drill a hole in some wood, put a pin in it
[02:40:23] <toastydeath> strap it to the mill
[02:42:09] <A2Sheds> I wouldn't have the patience myself, 3d model and off to the cnc guys :p
[02:42:31] <toastydeath> i did a lot of bridgeport work freehand like that, chamfering edges and stuff with makeshift guide fences
[02:42:55] <toastydeath> for soft material it works well
[02:43:49] <A2Sheds> http://www.practicalmachinist.com/vb/attachments/f20/17699d1260010155-2-headed-tracer-mill-005.jpg
[02:44:04] <toastydeath> haha if you have the patience to run a tracer, more power to you
[02:44:32] <A2Sheds> I hardly have the patience to run the CAD software :)
[02:47:09] <Jymmm> toastydeath: What he's doing is using it as 1) a pin for the handles, 2) lanyard hole, and 3) a spindle fire point.
[02:47:26] <Jymmm> toastydeath: it's a prototype machetti
[02:47:41] <Jymmm> commision prototype machetti
[02:48:27] <toastydeath> i'm talking about how he's making the handle shape
[02:48:44] <toastydeath> not the other thingy
[02:49:27] <Jymmm> toastydeath: the rough outline shape of the delrin handles you mean?
[02:49:40] <toastydeath> yep
[02:50:20] <Jymmm> k
[02:50:47] <toastydeath> i was describing how to quickly make a pin routing fixture
[02:51:58] <toastydeath> so that all you really had to do was make your two templates rather than set a bunch of angles using a flycutter/boring bar, protractor, and angle plate
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[03:13:30] <A2Sheds> what's a 3 acess cnc mill? http://chicago.craigslist.org/chc/tls/2610453611.html
[03:18:05] <KimK> I guess one that you can access from three directions?
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[03:27:47] <andypugh> Night folks
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[04:06:43] <FinboySlick> A2Sheds: What's the latest RTAI kernel patch you ran across? I've managed to go as far as 2.6.37.
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[04:30:11] <A2Sheds> FinboySlick: building for Slackware right now, 2.6.37 is the latest I've seen
[04:30:42] <FinboySlick> OK
[04:33:35] <A2Sheds> we will post the howto for it in the next few days
[04:36:40] <Tom_itx> when you create a 'net' in hal logic can you use the net name to drive further logic or do you need to use the signal that it was created from?
[04:39:52] <KimK> You can use the net name to connect more things to that "wire", is that what you mean?
[04:40:32] <Tom_itx> yeah
[04:41:08] <Tom_itx> i didn't know if i had to follow it back to the source that created it
[04:43:16] <KimK> I like to do that when the list of connects on that node starts getting pretty long, if the line "wraps" I think it's good to break it up a little, maybe two or three lines instead. That many connects doesn't happen too often though.
[04:43:37] <Tom_itx> working on pause/resume and spindle on/off control for my pendant
[04:43:52] <Tom_itx> trying to account for all the possible error conditions
[04:44:05] <Tom_itx> ie, don't resume unless the spindle is on
[04:44:19] <Tom_itx> don't allow to stop the spindle while the program is running
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[13:07:49] <JT-Shop> on my lathe spindle opposite the chuck end I can see where some attachment has been fixed by set screws... I assume some device to center up long stock. Any ideas on what one might look like?
[13:08:27] <archivist> a steady?
[13:08:48] <JT-Shop> yea, but I have no idea what one looks like for a lathe
[13:09:21] <JT-Shop> in other words I want to make one but need to see one/some first to get ideas
[13:09:46] <archivist> http://www.rutlands.co.uk/cgi-bin/psProdDet.cgi/DKA59
[13:10:17] <archivist> but there are other designs
[13:10:30] <JT-Shop> no, not for between the chuck and the tailstock but on the spindle away from the chuck
[13:11:55] <archivist> I can only think of three/four screws as a box chuck
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[13:13:31] <JT-Shop> it would fit on here http://imagebin.org/173961
[13:13:53] <JT-Shop> as you can see something has been on there many times
[13:15:14] <archivist> possibly just a hole to help stop the stock from whipping and keep it aligned
[13:16:21] <archivist> possibly part of a the bar feeder
[13:16:47] <JT-Shop> manual lathe so I assume no bar feeder
[13:17:29] <JT-Shop> brb breakfast time
[13:18:10] <archivist> time to look at that lathe models manual
[13:18:41] <JT-Shop> lol, if I had one... and google only has a couple of hits of other folks that have one
[13:20:41] <archivist> also a place to add a dividing disk or gear etc
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[15:30:48] <Tom_itx> it wouldn't be attached to the spindle to keep the stock steady. You wouldn't want the stock tube to turn
[15:32:25] <Tom_itx> the ones we had were separate and would slide back and forth and had a plastic sleeve in them until it got all tore up then it was just the bare tube
[15:32:43] <Tom_itx> you'd slide it back to load the material but that was on a bar feed
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[15:48:14] <syyl> and another successfull day of casting ;)
[15:48:22] <syyl> http://dl.dropbox.com/u/24396704/2011-09-25_16-03-10_353.jpg
[15:48:45] <Tom_itx> sand?
[15:48:47] <Tom_itx> wax?
[15:48:50] <Tom_itx> looks nice
[15:48:56] <Tom_itx> clean edges
[15:49:01] <syyl> oilbonded sand, yes
[15:49:14] <syyl> thanks ;)
[15:49:38] <Tom_itx> casting sand i presume?
[15:49:42] <syyl> yeah
[15:49:45] <Tom_itx> what type of oil?
[15:50:11] <syyl> professional sand, dont know which oil they use
[15:50:13] <syyl> but
[15:50:21] <syyl> we mixed our own sand also
[15:50:28] <syyl> little experiment
[15:51:16] <syyl> fine sand, fire clay, 2-stroke oil (smokeless) and isopropyl
[15:51:33] <syyl> worked like a charm
[15:51:50] <Jymmm> why the alcohol? as a thinner?
[15:51:59] <syyl> surfaces where a bit rougher as the sand was not that fine, as in the shopbought sand
[15:52:09] <A2Sheds> anyone recall who stocks the EPP IDC 26-pin on the 7i43 to DB25 adapter cables?
[15:52:22] <Tom_itx> nearly anybody
[15:52:26] <Tom_itx> digikey, mouser etc
[15:52:28] <syyl> as I have understand, the alcohol acted like an activator for the fire clay
[15:52:41] <Jymmm> ah
[15:52:49] <Tom_itx> oh i dunno about the cables made up
[15:52:57] <syyl> there are two kinds of fireclay (bentonite?), one is water activatet, one by alcohol
[15:53:00] <isssy> you can buy it from mesa
[15:53:05] <Tom_itx> yeah i'd do that
[15:53:17] <Tom_itx> unless you can make your own
[15:53:26] <Jymmm> A2Sheds: dollar stores, radio shack, surplus stores, etc
[15:53:34] <Tom_itx> walmart?
[15:53:46] <Jymmm> maybe
[15:53:51] <Tom_itx> not that cable
[15:53:58] <Tom_itx> db25 to idc26?
[15:54:32] <A2Sheds> db25 male to idc26 female
[15:54:57] <Jymmm> Yes, parallel cable from mobo to backplane.
[15:55:18] <A2Sheds> the common one is the db25 female for the back panel of your PC to to IDC26 female
[15:55:46] <Jymmm> ok,, add a gender changer for another $0.99
[15:55:50] <A2Sheds> http://www.amazon.com/DB25-Motherboard-Parallel-Connector-cable/dp/B003V70P1I so not this one
[15:57:07] <A2Sheds> I thought somebody had a nice 1m cable
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[15:58:07] <Tom_itx> Jymmm what a kludge
[15:58:16] <Jymmm> I wouldn't want that long of an unshielded cable
[15:58:44] <Jymmm> Tom_itx: Eh, $2 for cable and gender, is does the job
[15:58:47] <A2Sheds> db25 male to ~1m shielded round cable to IDC26 female
[15:59:36] <Tom_itx> Jymmm, a hooker does the job but it's not quite the same
[15:59:44] <A2Sheds> PC mainboard has EPP db25 female on the outside of the case, the 7i43 is a different enclosure
[15:59:56] <A2Sheds> is in a/is a
[16:00:00] <Jymmm> Or.... 12" + DBD25 M to F shielded cable
[16:00:12] <Jymmm> Tom_itx: But a whole lot cheaper than a wife =)
[16:00:24] <Tom_itx> good point
[16:00:54] <A2Sheds> yikes, radio shack..... why do i ask
[16:03:25] <Jymmm> I'd still use a standard ribbon paraport cable + a db25 M-F cable, both can easily be found in surplus stores.
[16:04:15] <Jymmm> err, my bad, I meant DB25 M-M cable
[16:04:28] <Jymmm> then you dont need the gender changer
[16:10:24] <A2Sheds> grrr, Slackware doesn't use PAM, so you have to rebuild X and whatever window manager
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[16:15:01] <A2Sheds> is there any other way to change the memlock settings from 2MB to memlock 20480 without using PAM?
[16:15:11] <A2Sheds> http://wiki.linuxcnc.org/emcinfo.pl?LockedMemory
[16:15:52] <JT-Shop> dang Z encoder wires
[16:16:13] <Tom_itx> bluetooth
[16:16:17] <Tom_itx> :)
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[16:23:03] <JT-Shop> now spindle speed is low... it ain't my day
[16:23:25] <Tom_itx> take a bike ride
[16:23:43] <A2Sheds> FinboySlick: ever bump into this issue? http://wiki.linuxcnc.org/emcinfo.pl?LockedMemory
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[16:25:24] <A2Sheds> FinboySlick: Slackware doesn't use PAM so I have to work around this
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[16:35:47] <FinboySlick> A2Sheds: the ulimit trick didn't work?
[16:35:57] <JT-Shop> Tom_itx: it's raining
[16:36:17] <JT-Shop> we were on and off the bike for 12 hrs yesterday
[16:36:51] <JT-Shop> I had to tweak my scale gain for the spindle to get it closer to commanded rpm at low speeds
[16:37:49] <Tom_itx> trying to get a handle on this pendant logic
[16:38:04] <Tom_itx> got the spindle working somewhat now to work on the pause resume
[16:38:37] <JT-Shop> did you see the pause/resume example on the forum?
[16:39:05] <Tom_itx> it's not just that..
[16:39:25] <Tom_itx> i want to make sure i can't turn the spindle off in auto until the program has paused
[16:39:30] <andypugh> Should my diver for the 7i49 allow setting of the carrier frequency? It is something you will do only once (if at all), and can do from the raw interface.
[16:39:31] <JT-Shop> the ok logic you were talking about last night?
[16:39:35] <Tom_itx> and after it's resumed make sure the spindle is back on
[16:39:42] <A2Sheds> FinboySlick: I'll see in a bit, if it does I'll have to set it in the script so it starts every time
[16:39:55] <Tom_itx> JT-Shop, probably
[16:40:26] <JT-Shop> Tom_itx: what's the default behavior with halui now? ie how much do you need to do on your end?
[16:40:51] <JT-Shop> andypugh: is there any reason to change it?
[16:40:59] <Tom_itx> well, i could stop the spindle during program run and it generated an error
[16:41:11] <Tom_itx> so i fixed that, now i get spindle errors on resume
[16:41:23] <JT-Shop> so you just want to avoid seeing the errors?
[16:41:24] <Tom_itx> because it's off if i don't turn it back on first
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[16:41:44] <andypugh> Well, you _can_ change it, so Pete must have thought it was worthwhile. You can choose 2.5, 5 or 10kHz
[16:41:49] <Tom_itx> and i think axis may be getting confused along the way
[16:42:09] <JT-Shop> I thought that was a jumper or something
[16:46:04] <andypugh> JT-Shop: No, it's a register write.
[16:46:30] <andypugh> It's simple enough, in theory.
[16:46:58] <andypugh> The only reason _not_ to do it is if writing to the EEPROM every startup is a bad thing.
[16:47:41] <JT-Shop> yea, that might be something Peter has to answer
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[16:55:20] <Tom_itx> JT-Shop, no i want to prevent the errors
[16:57:06] <JT-Shop> got it
[16:58:33] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/temp/cnc/spindle_control.txt
[16:58:40] <Tom_itx> that's what i did on the spindle side so far
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[17:16:45] <A2Sheds> http://cgi.ebay.com/Parker-Compumotor-Servo-Motor-Size-23-SM233AE-NGSN_W0QQitemZ310333052380QQcmdZViewItemQQssPageNameZRSS:B:SRCH:US:105 ~$225 ea
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[17:19:24] <A2Sheds> is anything new this size going to cost any less?
[17:19:50] <A2Sheds> 140 oz-in
[17:23:13] <andypugh> That's a NEMA 23?
[17:23:28] <A2Sheds> yes nema 23
[17:23:54] <A2Sheds> http://divapps.parker.com/divapps/emn/prior_version_compumotor/cat/english/SM_SeriesMotor.pdf
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[17:26:13] <andypugh> Hmm, 1Nm.
[17:26:46] <A2Sheds> I need one more, they shipped it attached to the linear positioned, it was dropped and the motor shaft is just bent enough to make the encoder wheel rub against the detector for ~30 deg of rotation
[17:27:00] <A2Sheds> positioner/positioned
[17:27:23] <andypugh> http://www.zappautomation.co.uk/index.php?cPath=35_116
[17:27:38] <andypugh> Might not be exactly the same size.
[17:28:00] <andypugh> Presumbaly it wasn't sent insured post?
[17:28:11] <A2Sheds> ebay
[17:29:05] <A2Sheds> ~$7K of positioners, servos and amps for $700 so I'm not complaining
[17:29:17] <A2Sheds> everything else is in great shape
[17:29:27] <andypugh> The Keling NEMA23 motors are a fair bit weaker.
[17:29:41] <andypugh> (but a fraction of the price)
[17:30:19] <A2Sheds> I'm using a ballscrew positioner rated for 700kg to move a 500g piece of glass
[17:30:27] <A2Sheds> so I could use a smaller motor
[17:30:29] <andypugh> If it was me, I would at least try straightening the shaft. You have not a lot to lose.
[17:30:55] <andypugh> http://www.kelinginc.com/DCBrushlessMotor.html
[17:31:43] <A2Sheds> yeah, I actually got it to work fine by just adding a shim to one corner of the case that holds the encoder
[17:32:27] <andypugh> That eBay price isn't a bargain, but it is exactly the right motor, with the right connectors, which is a help.
[17:33:02] <A2Sheds> yeah, was just going to say, everything just matches up
[17:33:09] <andypugh> Take the encoder off, put a dial indicator on the shaft, and tap it straight with a hammer. Carefully.
[17:33:32] <Tom_itx> don't use the bearings as an anvil
[17:33:42] <Tom_itx> block it up with something near the case
[17:33:54] <A2Sheds> I hope the detector has not been scratched by the glass scale
[17:36:17] <A2Sheds> http://www.ebay.com/itm/Parker-GV-Gemini-Servo-Drive-Controller-GV-L3E-13364-/220773163017?pt=LH_DefaultDomain_0&hash=item33671b2009
[17:36:36] <A2Sheds> came with the cables to connect right up to these
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[17:37:28] <A2Sheds> mesa 7i33 can drive the +/- 10V, I just have to tap into the 5V TTL encoder lines
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[18:57:25] <Jymmm> What lengths do SS welding rods usually come in?
[18:57:44] <JT-Shop> what kind?
[19:01:11] <archivist> gas, tig, mig, stick
[19:01:21] <JT-Shop> yea
[19:02:28] <archivist> or rod less in certain situations
[19:03:46] <Jymmm> I have no idea, was just curious. Seems to be a convienant source for SS rods is all.
[19:04:26] <syyl_> tig welding rod comes in 500mm lengths
[19:04:28] <archivist> better to just buy the rod you want not welding rod
[19:04:31] * JT-Shop must have missed a lot of this question
[19:04:31] <syyl_> and is not very cheap
[19:04:44] <Jymmm> I guess "filler" rods (if that makes sense)
[19:04:44] <JT-Shop> 36" over here
[19:05:02] <JT-Shop> they are all "filler" rods
[19:05:07] <Jymmm> oh, heh.
[19:05:40] <Jymmm> What I saw looks to be apx 14 to 18 ", I was wondering if that's common length
[19:05:45] <JT-Shop> tig "filler" rods are 36" or at least the ones I have are
[19:06:36] <JT-Shop> stick welding rods are various lengths, I've seen them from 12" or so to 24" long
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[19:07:24] <Jymmm> k
[19:07:25] <archivist> metal stockist will sell smaller qties than a welding supplier
[19:07:42] <JT-Shop> these 1/8" Harris 65 rods are 14"
[19:08:41] <Jymmm> k
[19:08:42] <Jymmm> TY
[19:08:43] <JT-Shop> 3/8" gouging carbons are 12.250000" long
[19:17:08] <Jymmm> Um, err, um, I just don't know what to say about this.... http://www.posables.com/machines.html
[19:18:55] <Jymmm> There has to be something that's missing fro that page
[19:19:10] <Tom_itx> fingers?
[19:20:18] <alex4nder> haha
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[19:29:16] <Jymmm> lol
[19:29:20] <Jymmm> Tom_itx++
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[19:45:08] <archivist> for UK boys there is one of these at my local scrap yard http://www.millingmachinesource.co.uk/product/omega-no-1-borer-jig-no-1-6060005579u?product_id=9080
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[19:53:08] <andypugh> Looks like a nice machine, but I don't really have any use or space for it.
[19:54:17] <archivist> I wonder about relieving it of its boring head :)
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[19:55:05] <archivist> from a google seems they are mid 1960's
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[21:40:38] <pcw_home> Andy: on resolver frequency normally higher is better because theres less lag in the signal
[21:40:40] <pcw_home> (firmware adds 1/F +~23 uSec delay to its reported position/velocity)
[21:42:00] <pcw_home> I would only use a lower frequency if the resover is not capable of running at the maximum
[21:42:02] <pcw_home> (thats is it lost too much accuracy at 10 KHz)
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[22:07:42] <Danimal_garage|2> hi
[22:08:15] <Danimal_garage|2> so no more realtime delay errors since i installed the new ssd
[22:12:01] <Danimal_garage|2> yay
[22:12:09] <Jymmm> Danimal_garage|2: what were they before?
[22:12:37] <Danimal_garage|2> 600-700k
[22:12:42] <Jymmm> k
[22:16:54] <pcw_home> Maybe your drive was failing
[22:17:51] <pcw_home> LIke I said I had random 50K latencies when other tasks did file I/O before replacing a hard drive
[22:19:36] <pcw_home> I think any time a disk operation needs to be re-tried due to disk error it causes a large latency
[22:20:59] <Danimal_garage|2> pcw_home: it would crash sometimes when i tried to open a new program in emc2
[22:21:18] <Danimal_garage|2> and when it rebooted, it would say there were errors with the file system
[22:21:58] <Danimal_garage|2> i'd put money on the drive being bad, and it was probably bad since day one (it's not very old)
[22:22:08] <Danimal_garage|2> wish i remembered what i did with the reciept
[22:22:39] <Danimal_garage|2> and my var file would go blank occasionally out of the blue
[22:23:01] <Danimal_garage|2> kept losing my work offsets
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[22:32:09] <andypugh> pcw_home: I was wondering whether to handle changing excitation frequency in the driver, as it is so easy to do with the raw interface, but it's done now.
[22:34:55] <pcw_home> It does no harm to change it but it cannot be changed live and it shoul not
[22:34:56] <pcw_home> change to lower frequencies unless asked to by the user
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[22:42:39] <Danimal_garage|2> anyone know what's new in 2.6 vs 2.5? i didnt see much on it anywhere
[22:42:59] <Danimal_garage|2> i installed 2.6 for the hell of it
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[22:48:34] <Danimal_garage|2> i was hoping it would load the parts for me
[22:51:45] <A2Sheds> EMC now running in Slackware
[22:51:50] <Danimal_garage|2> maybe give me a hug when i'm feeling blue
[22:54:28] <A2Sheds> now I have to find the old BIOS settings for this MSI core2 duo + 945 board, 60K jitter now, had it ~4K at some point
[22:55:03] <Danimal_garage|2> hmm i should check my latency with the new ssd
[22:58:16] <A2Sheds> it's too crazy to keep EMC working with Arch, we'll change the wiki Howto about EMC on Arch to EMC on Slackware
[22:58:39] <A2Sheds> nobody signed up as an EMC maintainer for Arch anyway
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[22:59:28] <Danimal_garage|2> what is arch?
[23:00:34] <andypugh> It's a Linux flavour
[23:00:35] <Danimal_garage|2> i see the wiki, but is it related to ubuntu or something? (i'm a total linux noob)
[23:01:26] <andypugh> Some folk don't like Ubuntu, so prefer to make their life more difficult by using a different distribution.
[23:01:28] <Danimal_garage|2> i didnt know emc ran on anything other than ubuntu
[23:01:34] <Danimal_garage|2> ha
[23:01:38] <Danimal_garage|2> gotcha
[23:01:47] <andypugh> It will run on any Linux.
[23:01:55] <Danimal_garage|2> im happy with whatever works easiest
[23:02:01] <andypugh> (with the right kernel mods)
[23:02:21] <Danimal_garage|2> gotcha
[23:04:11] <andypugh> Why oh why oh why is kfree _totally_ killing my system?
[23:04:43] <andypugh> I am trying to be a good little driver writer, but it all works a whole lot better if I don't kfree in the cleanup code.
[23:05:08] <A2Sheds> I don't like ubuntu since they decide to rename, change, move things around and keep some configs secret
[23:06:19] <andypugh> A2Sheds: You sound like the type of chap who can tell me what is wrong here: http://pastebin.com/hd1XRetR
[23:06:23] <A2Sheds> pick broken kernels that need backports, bullet proof x and other brilliant ideas etc etc
[23:07:47] <A2Sheds> other than that ubuntu is fine by me
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[23:08:06] <andypugh> It's actually unusually strange, because I get to run dmesg before the whole system freezes
[23:09:09] <adb> andypugh, wrong compile kernel ?
[23:09:37] <A2Sheds> andypugh: is this for a 64 bit kernel?
[23:09:41] <andypugh> No, it's all good if I comment out the two kfree lines.
[23:10:08] <andypugh> I am just baffled as to how kfree can be that bad.
[23:11:17] <adb> so,maybe you right
[23:13:50] <andypugh> The IP isn't in any module, that is even more strangerer.
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[23:15:34] <adb> #debian-kernel may help on it
[23:16:24] <andypugh> It's an EMC2 problem.
[23:16:43] <adb> (on oftc), ah
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[23:17:23] <andypugh> Though, it appears from "hm2_pci unloaded" that the hm2 driver is unloading cleanly, and then things are going very wrong later.
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[23:26:53] <adb> on my rtai kernel i don't have any "hm2" module
[23:38:26] <andypugh> It's one of the EMC2 drivers.
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[23:52:48] <andypugh> Aha! I was being stupid, kmalloccing arrays, then registering them with tram, which also kmallocs them.
[23:53:10] <andypugh> (and also kfrees them, so the problem was a double kfree)
[23:53:20] <adb> cool
[23:57:34] <JT-Shop> Danimal_garage|2: hi