#linuxcnc Logs

Jul 07 2020

02:08 AM veegee: After taking a look at the galvanized fittings, I have to say I'm not worried as much anymore
02:14 AM veegee: They're not rough and flaky like a galvanized lag bolt
02:14 AM veegee: The finish is very smooth
02:14 AM veegee: I bought a coalescing filter to put before the air dryer and will put filters on every drop just in case. But looks like galvanized is the way to go. Nearly identical pricing to black pipe
05:01 AM JT-Cave: morning
05:02 AM XXCoder: hey jt
05:02 AM XXCoder: they finally implemented IR camera thing
05:02 AM XXCoder: I have to take a picture before I log in
05:12 AM JT-Cave: how's it going over there?
05:12 AM XXCoder: work is slowed down a little again
05:13 AM XXCoder: not as bad as crush after 737 max stop and later total boeing shutdown
05:13 AM XXCoder: but yeah
05:27 AM JT-Cave: my pneumatic parts are finally shipping for that 1800's spoke lathe conversion
05:27 AM XXCoder: awesome :D
05:29 AM JT-Cave: finally got the brakes working right on Rusty, had to change the rear calipers
05:31 AM XXCoder: im basically broken lol I dont know how to go and do stuff basically
06:04 AM pjm: morning chaps! btw i bought a pair of ground leadscrews from aliexpress, one 400mm one and a 300mm one. 400mm was perfect, no backlash and excellent linearity. 300mm one no backlash but 0.25mm out over 300mm
06:39 AM Loetmichel: pjm: 2still in spec"
06:39 AM pjm: yeah it seems odd since the 400mm one is perfect
06:39 AM pjm: well <0.01mm out, more than i can measure accurately
06:39 AM JT-Cave: it was a mistake
06:39 AM Loetmichel: i had a 1700mm ballscrew from a german manufacturer on a CNC mill i built that was 4mm off over the 170mm
06:39 AM Loetmichel: 1700mm
06:39 AM Loetmichel: THAT was off ;)
06:39 AM pjm: wow ok
06:40 AM JT-Cave: just map the screw
06:40 AM pjm: i did think of taking it to a CMM for measuring every 25mm to see if i could do a correction file
06:40 AM Loetmichel: luckily it was linear off
06:40 AM Loetmichel: so it was easy to correct it in linuxCNC
06:40 AM pjm: yeah i have yet to look at that but know you can apply a correction file to it
06:40 AM pjm: i guess its a case of measuring every n mm and recording the error etc
06:41 AM Tom_L: morning
06:42 AM JT-Cave: morning
06:43 AM JT-Cave: another hot day here in paradise
06:43 AM XXCoder: looks like late summer here this year
06:43 AM XXCoder: the more late, the better
06:44 AM XXCoder: I hate summers
06:48 AM pjm: is there a how to on leadscrew compensation for a dummy like me?
06:48 AM JT-Cave: yea in the documents
06:49 AM Tom_L: what are those?
06:49 AM JT-Cave: a waste of time mostly lol
06:50 AM Tom_L: 92 for the high
06:50 AM JT-Cave: same here
06:51 AM XXCoder: 64f high here
06:51 AM JT-Cave: showoff lol
06:52 AM XXCoder: lol
08:12 AM pink_vampire: hi
08:46 AM JT-Shop: just got an order from a guy in AU that paid for Express... I guess he doesn't read the news
08:57 AM Loetmichel: JT-Shop: or he did and chose to thinkt that you can make express work while the local delivery guys are in strike...
08:57 AM Loetmichel: aka: "the lokals dont work, so i order overseas"
08:57 AM Loetmichel: (or whatever the problem is, quarantine?)
08:57 AM gregcnc: some shipments have been very fast
08:59 AM CaptHindsight: I had UPS ground take 6 days from 200 miles away
08:59 AM gregcnc: first class to czech republic was record time a couple weeks ago
09:01 AM CaptHindsight: USPS Priority from here to Israel got there yesterday, shipped in mid May
09:01 AM gregcnc: that's pretty bad. Haven't heard anything about UPS
09:02 AM gregcnc: yeha some places are long. I had a guy order from italy at the height of their mess. he said he had no trouble with mail.
09:02 AM CaptHindsight: UPS said they attempted delivery Friday but we were closed, not true and the driver didn't have the box until yesterday
09:03 AM CaptHindsight: so UPS just makes up status around holidays
09:03 AM gregcnc: did you tell your driver you'd be open friday?
09:04 AM CaptHindsight: doesn't matter, he was told to skip pickups Friday at places he knew were open
09:05 AM gregcnc: that's not ups like
09:05 AM CaptHindsight: yeah now UPS sucks and fedex has actually been good lately
09:05 AM CaptHindsight: it's like they take turns every few years
09:06 AM rmu|w: CaptHindsight: i once got a laptop computer delivered via UPS (from china). notifications were completely bogus. computer still was in china and tracking said it was in the delivery car. everyday status was updated with "delivery not possible - business was closed". took me some time on the phone talking to robots....
09:08 AM rmu|w: to me it looks like their database doesn't model situations that are not supposed to happen (delays), and because some status has to be in the database, it becomes an absurd one if something unplanned happens.
09:08 AM CaptHindsight: our UPS driver gave me the number to his terminal, they said the box was locked in a truck friday, i could not even pick it up
09:09 AM gregcnc: I would guess it got scanned onto a truck or container and should have been there, but was left behind
09:09 AM rmu|w: all those delivery services are awful, but my experience with UPS is extra-bad
09:09 AM CaptHindsight: twice, was to be here last Thursday
09:11 AM CaptHindsight: yeah when you see "delivery not possible - business was closed", you know that they just messed up
09:14 AM CaptHindsight: are any of the carriers guaranteeing delivery on time yet?
09:22 AM JT-Shop: none
09:22 AM JT-Shop: I've had packages sit in out going customs for over a month
09:30 AM gregcnc: lack of flights
09:31 AM JT-Shop: usps is shipping via boat to most international destinations
09:38 AM rmu|w: shipping via ship
09:50 AM `Wolf: JT around?
09:59 AM pink_vampire: https://www.ebay.com/itm/HARMONIC-high-precision-for-DIY-4-axis-5-axis-cnc-ration-50-1/153094249073?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D225086%26meid%3Da03828df58da4c868cc13377e108ec23%26pid%3D100970%26rk%3D6%26rkt%3D15%26mehot%3Dnone%26sd%3D303341226933%26itm%3D153094249073%26pmt%3D0%26noa%3D1%26pg%3D2380057%26brand%3DCNC&_trksid=p2380057.c100970.m5481&_trkparms=pageci%3A20d
10:00 AM pink_vampire: "HARMONIC high precision"
10:01 AM pink_vampire: picture of a belt driven rusty chuck
10:02 AM JT-Shop: https://www.ebay.com/itm/HARMONIC-high-precision-for-DIY-4-axis-5-axis-cnc-ration-50-1/153094249073
10:03 AM JT-Shop: nothing in that link is needed after the ?
10:03 AM Rab: https://www.ebay.com/itm/153094249073
10:03 AM Rab: ;)
10:03 AM JT-Shop: or that way :)
10:03 AM pink_vampire: COOL!
10:03 AM Rab: Chuck not included?? phooey
10:03 AM gregcnc: pink how many are you buying?
10:04 AM pink_vampire: 0
10:04 AM gregcnc: there is a harmonic drive there
10:04 AM * JT-Shop should list some of his trash for big bucks
10:05 AM pink_vampire: what can make the lathe cut very noisy, and after a while make very nice chip, and then make noise again?
10:05 AM pink_vampire: maybe something in the metal?
10:06 AM gregcnc: probably not
10:06 AM pink_vampire: but it is the same cut.
10:06 AM pink_vampire: the tool is the same
10:06 AM pink_vampire: it is auto feed on the Z
10:07 AM gregcnc: different radius, different part mass, different surface speed
10:07 AM rmu|w: vibration
10:07 AM gregcnc: boring again?
10:07 AM pink_vampire: some places I'm getting nice chip, some it is like powder
10:08 AM pink_vampire: no, just reducing the OD
10:08 AM rmu|w: if your cutting tool hits close to an eigenfrequency of the system it will chatter
10:08 AM gregcnc: matterial?
10:09 AM rmu|w: gödel escher bach has a nice chapter about eigenfrequencies of record players, record-player-destroying records, and how to create/detect them without destroying your record player.
10:09 AM pink_vampire: the material is the thing from lowes,
10:09 AM rmu|w: but... that is nerd stuff
10:10 AM gregcnc: wood?
10:11 AM gregcnc: Lowes has lots of wood....
10:11 AM rmu|w: pink_vampire: try increasing and decreasing feedrate and rpm and look if it makes a difference
10:12 AM pink_vampire: RPM it is 350
10:12 AM pink_vampire: OD 16mm
10:13 AM pink_vampire: I'm going in like 0.1-0.2mm
10:13 AM pink_vampire: and the the power feed is something sloooow
10:14 AM pink_vampire: maybe 0.05mm per rev?
10:14 AM gregcnc: I must have missed the material?
10:14 AM gregcnc: and cuttign tool
10:15 AM rmu|w: material, stickout, is the end supported in a center? cutting tool? cutting fluid?
10:18 AM pink_vampire: stickout from the chuck 70 mm
10:19 AM pink_vampire: no support
10:19 AM pink_vampire: cutting oil (motor oil that I'm also use for the car, works fine on the mill)
10:21 AM rmu|w: _ANY_ idea what the material might be you are trying to cut?
10:24 AM Rab: Lowesium
10:24 AM pink_vampire: it look bright as cold rolled, but it has a hard skin like hot rolled
10:24 AM pink_vampire: maybe A36?
10:24 AM pink_vampire: I have no idea
10:24 AM gregcnc: and teh cutting tool?
10:24 AM Rab: pink_vampire, steel rod stock?
10:25 AM rmu|w: pink_vampire: so it is steel. not titanium. not aluminium. not paper.
10:25 AM gregcnc: my guess is a36, lowes site doesn't say
10:25 AM pink_vampire: it come from lowes or home depot years ago
10:25 AM pink_vampire: it is steel
10:25 AM rmu|w: but it doesn't matter anyways.
10:25 AM pink_vampire: 3/4" round
10:25 AM pink_vampire: let me take a pic
10:26 AM gregcnc: 350RPM is super slow for inserts DOC and IPR are also very small unless you are using finishing inserts or sharp top rake inserts
10:26 AM pink_vampire: https://i.imgur.com/5gPoqv1.png
10:26 AM rmu|w: everything is a spring. your tool puts pressure on the rod. this tool pressure can lead to vibration depending on rigidity of the whole setup. if this vibration is near an eigenfrequency of the whole setup if will can get very loud
10:27 AM pink_vampire: this is what I need to make https://i.imgur.com/OdvivD2.png
10:27 AM pink_vampire: a new tool post bolt
10:28 AM Rab: At 0.1-0.2mm depth, maybe mill scale is affecting the cut?
10:29 AM gregcnc: zinc plated even
10:29 AM rmu|w: pink_vampire: maybe your DOC is too low and the tool is rubbing
10:29 AM pink_vampire: it was 19mm od, now i'm down to 16mm od
10:29 AM Rab: The pic is before turning, correct?
10:29 AM pink_vampire: yes
10:30 AM pink_vampire: yel me take a new one
10:32 AM pink_vampire: https://i.imgur.com/SZy7Hlt.png
10:33 AM rmu|w: i have to go. i'm no expert, but you could try playing with the feedrate, depth of cut, support the end, re-sharpen the tool, and use proper cutting fluid
10:33 AM gregcnc: I would reduce DIA only enough to make the thread first, then the rest.
10:34 AM rmu|w: also, reduce stickout while cutting the threads
10:35 AM gregcnc: right, depends on how accurate the part needs to be. rechucking add some error
10:37 AM pink_vampire: it is cutting.. don't get me wrong, but it is just not moving material as fast as I want it to be
10:37 AM gregcnc: what does chip formation ahve to do with that?
10:38 AM gregcnc: 350RPM is slow
10:38 AM gregcnc: i assumed this was because you don't want chips in your bed
10:39 AM gregcnc: it's a small machine so you have to experiment to see what you can get away with
10:44 AM pink_vampire: right now I'm getting VERY long nice chips, very easy to clean them
10:45 AM skunkworks: Normally you want the chip to break..
10:45 AM skunkworks: so you don't have long stringy chips
10:46 AM gregcnc: If I run the Sandvik inserts where they want to be I get ~1" long curly blue chips flying everywhere, and an excellent finish
10:46 AM gregcnc: but that's far faster than any short parts in the manual lathe make any sense
10:47 AM pink_vampire: skunkworks: and you want to clean the razor sharp chips from ALL OVER the house?
10:48 AM skunkworks: heh - That is a whole other discussion...
10:49 AM gregcnc: you can't have fast and clean without an enclosure
10:49 AM Rab: pink_vampire, from your picture, it looks like the compound is set so the insert face is parallel to the stock. Is that the case?
10:50 AM Tom_L: they should start filling cruise ship cabins with freight since theyre not full of passengers
10:50 AM Rab: Or is the insert angled slightly?
10:53 AM skunkworks: what is the diameter of that stock?
10:53 AM skunkworks: about 1"?
10:54 AM Rab: 3/4" turned down to 16mm, I believe.
10:57 AM skunkworks: with carbide - I would think you should be closer to 1500rpm..
11:05 AM Tom_L: yeah with carbide the chips should be flying off there white hot!
11:05 AM gregcnc: 1500 will only turn them blue
11:07 AM Tom_L: brown/blue is no fun...
11:12 AM Tom_L: ever have a rats nest bust a tool off?
11:13 AM Tom_L: shouldn't happen on manual but may on cnc
11:14 AM gregcnc: you setup so you don't get birdnests, or you babysit
11:15 AM Tom_L: programmed right it shouldn't happen but i've seen it a time or two
11:17 AM gregcnc: M0 (REMOVE BIRD NEST)
11:41 AM rmu|w: thread on a toolpost should be uncritical (rechucking)
11:52 AM veegee: Found a sheet metal duct shop like 5 minute walk away from my office lol
11:52 AM veegee: literally called "City Sheet Metal" - ventilation for restaurants, etc.
11:55 AM veegee: speaking of bird nests
11:55 AM veegee: There was a live bird nest in one of our vent holes. Have to check if they're still there
12:31 PM pjm: has anyone here done the leadscrew mapping / compensation file that can answer a couple of Q's?
12:31 PM pjm: (for a stepper machine this is)
12:33 PM Tom_L: ask
12:35 PM pjm: okey dokey, so i have a DRO with 0.005mm res, I can strap this on to X or Y and make measurements at say 5 or 10mm increments
12:35 PM pink_vampire: Rab: the tool on the side like that just to show what type of tool I'm using
12:35 PM pjm: would I use compensation file type 0 and do for example G00 X0 set DRO to zero, then G00 X10 make a note of real 10mm measurement from DRO
12:36 PM pjm: then repeat to the end of the travel, and then work backwards etc back down to zero, populate the file and thats it?
12:36 PM pjm: just need to get the process right in my head
12:36 PM Tom_L: that's more or less what i did
12:37 PM pjm: ok so at the moment i tweaked the steps per machine unit,it should have been 1280 but was 1283.blahblah, i guess i could reset this to 1280 and then make the comp file
12:37 PM Tom_L: i wound up not using the data since mine weren't far enough off to bother me
12:37 PM pjm: ah yeah ok, well i want mine to be right X is perfect but Y isnt so I might as well do both just to a) check X really is good, and fix Y
12:38 PM SpeedEvil: pjm: you would also care about temperature changes and stuff meaning your joins are imperfect
12:38 PM pjm: presumably i can make the backlash comp =0, on X its only very small but the compensation file would correct that ?
12:39 PM Tom_L: i think i did type 1 which i think is the deviation from norm
12:40 PM rmu|w: pjm: your DRO works off a glass scale?
12:40 PM Tom_L: so the 2nd number would be the offset from nominal in the + direction and the 3rd number would be the offset in the - direction
12:42 PM Tom_L: i didn't have glass scales to use and was more interested in the process than the result
12:42 PM Tom_L: i used 123 blocks and a couple gauge blocks for my test
12:44 PM Tom_L: also note that any compensation is introduced to the cut as a rapid move at the beginning of the cut which if the number is large would be undesireable
12:44 PM Tom_L: i noticed that with regular comp on my crappy old sherline
01:03 PM veegee: Damn, 10 gauge solid copper wire is really stiff and hard to work with
01:04 PM Tom_L: uh huh
01:10 PM pjm: rmu|w, yeah its a glass one from accurite
01:11 PM pjm: so i guess its better to have more measurements, maybe every 5mm which is one turn of the leadscrew
01:13 PM rmu|w: pjm: you could integrate the DRO into linuxcnc
01:13 PM rmu|w: as feedback
01:14 PM Tom_L: might actually be better
01:14 PM pjm: yeah I could except it was bought for my lathe, i just have not fitted it yet
01:15 PM pjm: so if its possible to do then I'll just get a set of DRO scales and add those to another encoder input on my mesa card
01:15 PM Tom_L: that would avoid the jerks added in from the comp file
01:16 PM pjm: sure, how do stepper systems cope when the target position is between a 'step' in the motor?
01:16 PM Tom_L: good question
01:16 PM pjm: or I guess thats what the deadband is for
01:17 PM pjm: anyway i think i'll try the compensation file /5mm for Y and do some measurements to see how it looks
01:31 PM rmu|w: dither back and forth like any proper servo system ;)
01:32 PM pjm: hahh ok
02:55 PM skunkworks: I think you are limited to 256 points.
02:56 PM pjm: ok thanks, useful info
02:57 PM pjm: for the actual measuring i take it i just use the machine datum, i.e. home say the Y axis where the homing switch is at 0 for example then measure every N mm
02:57 PM pjm: my machine is only a smallish bed about 250X350mm
02:59 PM Tom_L: skunkworks, did you notice andy's iso?
03:39 PM skunkworks: Tom_L: I did - have not had a chance to play yet
03:40 PM Tom_L: menus are a bit wonky but lcnc works
03:43 PM jymmmm: CaptHindsight: I believe I have come up with a viable CAT-BE-GONE-AND-QUIT-SHITTING-IN-MY-YARD solution
03:44 PM Tom_L: 12Ga?
03:44 PM jymmmm: Tom_L: Eh, that's option #2
03:45 PM jymmmm: Tom_L: stun gun(s) connected to motion sensors
03:46 PM jymmmm: Tom_L: The sound alone should hopefully deter them
03:47 PM Tom_L: be sure to water first
03:48 PM jymmmm: Well, I wasn't really considering shocking them, at least not with this much power
03:48 PM Tom_L: do they go any certain spots?
03:48 PM Tom_L: spread black pepper around
03:48 PM jymmmm: Nope, all over the place, plus fight at 1 to 4am,
03:48 PM jymmmm: Tom_L: Alreayd have for the past few years, and rosemary too
03:48 PM Tom_L: on the plus side, you don't need an alarm now
03:49 PM jymmmm: I just need to figure out how to wire into the stun gun
03:50 PM jymmmm: the micro relay cost more than the stun gun itself
03:52 PM jymmmm: https://www.amazon.com/VIPERTEK-VTS-880-30-Billion-Mini-Stun/dp/B01F4E2YI2/
03:53 PM jymmmm: Could I use a 2N2222 ?
03:54 PM Tom_L: depends how much trigger current goes thru the switch
03:55 PM jymmmm: any suggestions?
03:55 PM Tom_L: measure the voltage at the switch too
03:55 PM jymmmm: the motion sensor outputs 3.3V trigger
03:56 PM Tom_L: he101 was a hamlin logic level relay with built in diode
03:56 PM Tom_L: dunno if it's still available
03:56 PM Tom_L: 3.3 might not trigger it... i dunno
03:59 PM jymmmm: https://www.allelectronics.com/item/rly-623/3-vdc-dpdt-dip-relay/1.html
04:01 PM Tom_L: socket is 4x the relay
04:04 PM jymmmm: socket?
04:04 PM jymmmm: https://www.amazon.com/Baomain-Power-JQC-3F-240VAC-125VAC/dp/B01I90H47O
04:05 PM jymmmm: Oh, I'd just solder on leads
04:11 PM Tom_L: you seen the new amazon app that gives you stop by stop delivery progress and photo of the delivery?
04:15 PM roycroft: i don't know of that, but i really don't think it's necessary for delivery people to wear body cams
04:16 PM roycroft: that's a bit over the top
04:16 PM roycroft: and i really don't want people coming onto my property with livestream cams strapped to themselves
04:28 PM Tom_L: you should send stuff to a PO box then
04:28 PM roycroft: sure, when the pandemic is over i'll start doing that again
04:29 PM roycroft: now if they have the cameras mounted on their trucks, there's nothing can be done about that
04:29 PM roycroft: and i don't mind that so much
04:29 PM roycroft: the truck will remain in a public space
04:29 PM roycroft: i just don't want people bringing cameras onto my private property
04:30 PM roycroft: they may accidently record something that is not visible from a public space
04:30 PM roycroft: not that i have anything to hide, but it's a matter of respecting privacy rights
04:43 PM Tom_L: we still have those?
04:43 PM roycroft: they can't be taken away
04:43 PM roycroft: but we can give them up
04:43 PM roycroft: and i'm still resisting
04:44 PM Tom_L: satelites, data centers, cameras everywhere....
04:44 PM Tom_L: ir equipped police air support
04:45 PM infornography: Tuesday is soylent green day
04:45 PM roycroft: zuckerberg well have his day of reckoning
04:46 PM roycroft: he claimed that privacy is dead
04:46 PM roycroft: the sheeple mostly went along with that
04:46 PM roycroft: because they thought he was giving them free stuff
04:46 PM roycroft: now they're starting to finally realise that giving that up comes with a cost
04:46 PM roycroft: and they don't like the cost
04:47 PM roycroft: some of my friends who have been telling me i'm crazy for hating on facebook since day one are coming around saying i was right all along
05:36 PM gregcnc: lol people are agreeing to send their data to china in apps
05:42 PM jymmmm: gregcnc: It's so true, I sent YOUR data to china just yesterday ;)
05:42 PM gregcnc: see, we're all in this together
05:42 PM jymmmm: gregcnc: No worries though, they rejected it
05:42 PM gregcnc: I've been there so they know me
05:43 PM jymmmm: ah, that's probably it then
08:01 PM CaptHindsight is now known as ColKlink
08:02 PM ColKlink is now known as ColonelKlink
09:00 PM Connor: OKay, someone tell me how to put LinuxCNC sim mode on Ubuntu 20.04
09:33 PM ColonelKlink: Connor: is it possible to simply do so?
09:35 PM ColonelKlink: Ubuntu is sort of similar to Linux :)
10:07 PM veegee: Wait what
10:07 PM veegee: Sum wun made a dum dum!?
10:08 PM veegee: And yeah zuckerfuck is a piece of shit
10:08 PM veegee: Just look at his face and you'll know everything you need to know about him
10:11 PM veegee: The pricing on simple NEMA L6-30 is ridiculous https://www.amazon.ca/s?k=NEMA+L6-30
10:12 PM veegee: All I want to do is put a few of these in the workshop. It's insane that a 50A receptacle is only $6 https://www.homedepot.ca/product/leviton-50-amp-range-receptacle/1000113579
10:12 PM unterhaus: I guess nobody that needs one is price sensitive
10:13 PM veegee: I just don't get why a NEMA 14-50 is that much cheaper
10:13 PM veegee: I wouldn't even mind NEMA 6-50 but even those are expensive and they take less material to produce
10:13 PM unterhaus: I use the 4 prong 30 amp
10:13 PM veegee: I guess I could just standardize my shop on 14-50 and ignore the neutral pin
10:14 PM unterhaus: I figure I only buy them once, why regret not having a neutral?
10:14 PM veegee: Yeah L14-30 is fine too but I'd have to just ignore the neutral prong
10:14 PM veegee: You're right, but something about having that pin when I know 100% that I'll never need it makes me feel weird
10:15 PM unterhaus: I wire the neutral so I can have 2x 120v if I want
10:15 PM veegee: I have 220Y127 throughout the shop. It's 3 phase. I'm never going to break out the L14-30 into two 120V
10:15 PM unterhaus: probably only want 1x 120v though
10:15 PM Tom_L: sure as you don't, you'll find a need
10:16 PM veegee: I try to balance the legs as much as humanly possible
10:16 PM unterhaus: my dust collector is on 3 wire 220v and I already want a neutral
10:16 PM veegee: I don't like unbalanced legs on my transformers. I know, I'm silly like that
10:16 PM veegee: But fine I'll just get the L14-30 receptacles
10:17 PM unterhaus: although the cost of 4 conductor would have raised the price considerably
10:17 PM veegee: Home depot had a pricing error on their #10 4 conductor wire
10:17 PM veegee: they swapped the price of the 3 conductor and the 4 conductor
10:17 PM veegee: so the 3 conductor is much more expensive than the 4 conductor
10:17 PM veegee: At least in Canada
10:18 PM Tom_L: maybe popularity plays a part
10:18 PM veegee: It's been like that for at least 2 years and no one fixed it lol
10:18 PM veegee: No it's 100% an error
10:18 PM veegee: the description in the checkout counter clearly shows it
10:18 PM veegee: But no one cares and no home depot employee even knows as long as the bar code checks out
10:19 PM veegee: So I bought 100m of stranded 10 gauge 4 conductor wire for a great price
10:19 PM Tom_L: iirc i ran 6 to the garage
10:20 PM veegee: Yeah my plasma cutter wants 6 gauge single phase 240
10:20 PM veegee: fuck that
10:20 PM veegee: I'm going to swap out the bridge rectifier into a 3 phase full bridge rectifier and give it 10 gauge 3 phase
10:21 PM veegee: It's an inverter. Idiotic to put a 4 diode rectifier in there. It costs like 2 cents to add a couple of more diodes
10:21 PM veegee: The welder already came with the 6 diode rectifier so it was dead simple to convert it to 3 phase
10:23 PM veegee: I might even have some fun and swap it out with rectifiers with "active diodes".
10:23 PM veegee: Maybe not worth it at 240V. At 120 it would be for sure. I guess at least Schottky would do just fine
10:38 PM ColonelKlink: I've made them aware of errors and they just seemed upset
10:38 PM ColonelKlink: so I don't try anymore
11:05 PM pink_vampire: hi
11:44 PM unterhaus: someone went and compared a paper I coauthored from 2006 to a paper from 2007 and said we should have cited the earlier paper in the second one
11:45 PM unterhaus: not sure how they decided to pick on us, I have reviewed papers that were 100 percent word for word already published
11:49 PM JavaBean: they "decided" to pick on you by using dice or /dev/random