#linuxcnc | Logs for 2020-07-13
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[02:52:35] <Loetmichel> mornin'
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[03:02:23] <Loetmichel> hehe: "DANM, why doesent want that Bolt go into the alu???... Ah, works better if you tap the just drilled hole!" :-)
[03:02:33] <sensille> what do you use as cutting/cooling fluid on a lathe? preferably a product that's readily available in germany
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[03:03:51] <Loetmichel> depends on the wirk material: for alu: a mix of 50 IPA and 50% water and a dab of dish detergent, for steel a can of engine oil and a paintbrush
[03:04:11] <Loetmichel> but i am more a hobbyist than a professional on the lathe
[03:04:23] <sensille> steel
[03:05:02] <sensille> engine oil? thin or thick?
[03:05:27] <Loetmichel> for steel i would also distinguish between cutting htreads with a die and cutting with an insert/HSS tool "regulary"..
[03:05:46] <Loetmichel> the former: pure oil, the latter: a standard coolant mix
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[03:06:16] <Loetmichel> i take whatever is handy, any engine oil works better than nothing ;)
[03:07:14] <Loetmichel> but IIRC thread cutting oil is vey thick and tacky
[03:08:32] <Loetmichel> but normal cutting works well with brushed on 15W40 or similar. just remember to clean the part afterwards
[03:09:07] <Loetmichel> btw: the alcohol/water mixture makes cast iron rust like crazy, so remember to clean your machine ASAP after turning alu
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[03:17:49] <CaptHindsight> some people like lard for tapping aluminum
[03:18:34] <Loetmichel> CaptHindsight: yeah, i can imagine that working pretty well
[03:19:06] <Loetmichel> problem is that you have to clean the part afterwards, with the alcohol thin its enough to use a blowgun. MUCH easier
[03:19:12] <CaptHindsight> sensille: https://smithy.com
[03:19:43] <CaptHindsight> goes in the dishwasher :)
[03:19:45] <sensille> oh wow
[03:20:23] <sensille> i guess "soluble oil" is the answer
[03:20:28] <Loetmichel> yes
[03:20:40] <Loetmichel> if you dont mind cleaning the part
[03:21:10] <sensille> the science of oil is completely beyond me
[03:21:27] <CaptHindsight> most of my parts need cleaning anyway
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[03:21:52] <CaptHindsight> prepping for anodize or coatings or paint
[03:23:42] <sensille> so what to get as "soluble oil" in germany
[03:25:16] <Loetmichel> sensille: google "mannol emulsion"
[03:25:17] <sensille> i tried "Sonax sx90 plus", but it just burns
[03:25:23] <Loetmichel> aqnd use it pure, without water
[03:25:29] <Loetmichel> works well for me
[03:25:42] <sensille> thanks
[03:25:48] <CaptHindsight> https://www.fuchs.com
[03:26:26] <Loetmichel> https://www.motor-oel-guenstig.de
[03:26:28] <Loetmichel> that stuff
[03:26:46] <Loetmichel> but i would not buy a 10 liter can for a hobbyist
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[03:28:00] <sensille> those 10l are quite cheap, but i'd really prefer to start with 1l :)
[03:28:20] <Loetmichel> sensille: the sonax is a penetrating oil, its meant for losening rusted bolts, not for turning steel
[03:28:53] <Loetmichel> you need an oil that can cling to the surface and has a very high "ölfilm-reissdruck"
[03:29:08] <sensille> it was listed as accessory for the lathe and the comments said the use it for cutting, so i tried. and failed
[03:29:28] <Loetmichel> yeah, dosent surprise me
[03:29:37] <Loetmichel> that stuff is simply to thin to work
[03:30:43] <sensille> no surprise, the mannol already seems to be the cheapest stuff :)
[03:31:55] <sensille> but 4l aren't that much cheaper than 10l
[03:33:40] <Loetmichel> it was probably listed as an accessory because it cleans the ways and such things, not as a cutting oil
[03:33:45] <Loetmichel> the sonax stuff
[03:33:55] <Loetmichel> like WD40
[03:34:14] <sensille> which is used as coolant, too
[03:34:52] <Loetmichel> and works equally bad
[03:35:15] <Loetmichel> "slightly better than dry, but only slightly"
[03:36:04] <sensille> i guess i just go for the 10l
[03:36:12] <sensille> enough to last a lifetime
[03:37:29] <Loetmichel> thats what i said when i bought my first 10l of IPA... took me less than 2 months to kill that jerrycan ;)
[03:37:48] <sensille> maybe this ... https://www.ebay.de
[03:38:45] <Loetmichel> i am always sceptical when stuff claims to be the "jack of all trades"
[03:38:54] <Loetmichel> but your mileage may vary
[03:41:43] <sensille> ordered the 10l
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[05:52:10] <JT-Cave> morning
[06:00:09] <XXCoder> yo
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[06:20:01] <JT-Cave> now web sites want to enable push notifications lol not a chance too much like facebook
[06:25:28] <jymmmm> JT-Cave: "For your convenience.... Spam Direct"
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[06:25:49] <jymmmm> morning
[06:36:44] <JT-Cave> hmm something in X11 resets the screen blanking dammit
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[07:41:11] <Tom_L> morning
[07:41:18] <JT-Cave> morning
[07:42:36] <XXCoder> good sunrise time everyone
[07:47:57] <jymmmm> XXCoder: 30minutes AFTER I wakeup, whenever that may be :)
[07:48:24] <XXCoder> really? even if you wake up at 1 pm it sun will wait 30 additional minues?
[07:52:54] <Tom_L> 73 currently high 94
[07:54:48] <jymmmm> XXCoder: Nope, cycle time is still the same, just on MY schedule =)
[07:54:56] <XXCoder> lol
[07:59:35] <JT-Cave> 67°F
[08:01:41] <jymmmm> 74F/93F
[08:01:49] <XXCoder> 69f peak
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[09:06:24] <perry_j1987> morning
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[09:53:16] <perry_j1987> mmm coffeee
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[10:26:10] <skunkworks> ditto
[10:32:04] * SpeedEvil ponders recent TOT on latches.
[10:32:17] * SpeedEvil ponders a XY array of latches and a couple motors.
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[13:26:25] <jymmmm> The lights are on but nobody's home
[13:32:05] <miss0r2> it happens
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[13:33:12] <miss0r2> I just got my cobber rails in the mail today, so I can start making the busbars for the AGM batteries
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[13:39:15] <jymmmm> miss0r2: what are you going to use?
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[14:50:40] <miss0r2> jymmmm: some 3x15mm cobber rails
[14:51:08] <miss0r2> Only plan on using up to 25amps "continously"/for prolonged timed
[14:51:32] <miss0r2> A quick'n dirty calculation rates the rails at 45amps
[14:52:01] <Loetmichel> for 25A 3*15mm copper rails is a BIT over the top, dont you think?
[14:52:17] <miss0r2> I have also added a 100amp fuse inbetween the batteries and another 100amp fuse for the output
[14:52:28] <Loetmichel> yeah, i would have no problems pumping 100A thru 3*15mm rails
[14:52:40] <miss0r2> Loetmichel: Sure :] But i don't want it to become too "flimsy"
[14:52:56] <miss0r2> 3x15mm is just a nice size to use 6mm bolts through
[14:53:36] <Loetmichel> miss0r2: considering that THAT shunt can cope with 20A: http://www.cyrom.org
[14:53:50] <Loetmichel> and thats just 35um copper on PCB ;)
[14:54:39] <miss0r2> well, its called a shunt because you can actualy measure the voltage drop across.. :) I don't want to wase precious volts using too thin cobber :D
[14:54:49] <miss0r2> waste*
[14:55:36] <miss0r2> https://imgur.com
[14:56:01] <miss0r2> the larger part to the right is a acetal part that will support the fuses/joints. The rest are the copper rails
[14:57:33] <Loetmichel> yeah, i know. still: the ground band on a normal car is just about 20mm by 2mm braid. and that can support 850 CCA
[14:57:42] <Loetmichel> and even more
[14:58:09] <miss0r2> yeah. But honnestly, this is mostly for the structual integrity
[14:59:27] <miss0r2> I don't like looking at flimsy installations, unregardless of how well they are calculated.
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[15:18:01] <CaptHindsight> starter solenoid contacts are usually the weakest link in the starting system
[15:20:48] <Loetmichel> yes
[15:21:26] * Loetmichel worked on a couple czech Tatra 813 colossus
[15:22:19] <Loetmichel> those have a V12 with 17.5l displacement (1100 cu.in)... and TWO 30kW starters
[15:22:36] <Loetmichel> two stater solenoids, each good for 1000A++
[15:23:25] <CaptHindsight> yeah, they don't make cars like that
[15:23:31] <Loetmichel> the russian way: the solenoid just pulls a piece of 10*50mm copper rail bent into an U shape onto two similar rail tabs ;)
[15:24:11] <Loetmichel> similar sized
[15:24:57] <CaptHindsight> Loetmichel: not sure of the point you are trying to make
[15:25:24] <CaptHindsight> some trucks have high current starters
[15:25:38] <Loetmichel> point was: a bit of copper can carry surprisingly heavy currents
[15:25:43] <CaptHindsight> russians make starters with U shaped copper bars?
[15:25:57] <Loetmichel> not starters, starter "solenoids"
[15:26:09] <CaptHindsight> oh, copper is a good conductor
[15:26:26] <Loetmichel> just an electromagnet that pulls said u shaped copper bar in
[15:26:29] <CaptHindsight> good to know
[15:26:49] <Loetmichel> ont two ends of the same copper bar
[15:27:09] <Loetmichel> easily repairable though
[15:27:11] <CaptHindsight> copper is a good conductor
[15:27:13] <Loetmichel> we had one fail
[15:27:43] <Loetmichel> dismantle, file new "teeth" on the U-part, file the burn marks out of the copper contacts on the bottom end, assemble: works
[15:27:46] <CaptHindsight> some people are anti-aluminum wire
[15:27:56] <CaptHindsight> metal snobs
[15:28:16] <CaptHindsight> yet still too cheap for silver
[15:28:25] <Loetmichel> and those engines were nearly indestructible
[15:28:38] <Loetmichel> we had a piston seizure on one because of overheat.
[15:28:44] <gregcnc> dang those antialuminiumiumiumites
[15:29:21] <Loetmichel> waited on the side of the highway until the engine was cold again. Pressed one starter: *CLACK*, nothing happens. so the driver pressed both buttons...
[15:29:39] <Loetmichel> *CLACK* *CRACK* and the engine spun to life on 11 cylinders
[15:30:04] <Loetmichel> lower bearing cap on the conrod of the sized piston ripped off ;)
[15:30:37] <Loetmichel> we drove home, changed the whole cylinder and piston and conrod: works like a charm again
[15:30:45] <JavaBean> and the piston wasn't launched into the crankshaft?
[15:31:06] <roycroft> i think i'm not a big fan of machining brass
[15:31:13] <Loetmichel> didnt even need to undo the oil plan, enough clearance to fish all the broken parts out of the pan from above once the cylinder was removed ;)
[15:31:19] <roycroft> which is sad, because i really like the metal
[15:31:25] <roycroft> but it's so bloody grabby
[15:31:49] <roycroft> perhaps if i had proper tooling for it things would go better
[15:31:59] <Loetmichel> javabean: the conrod broke bcause the piston was seized inside the cylinder
[15:32:10] <Loetmichel> how could it possibly launch?
[15:32:50] <JavaBean> didn't the combustion cycle contine in that cyclinder?
[15:32:57] <Loetmichel> and to be honest: missing one cylinder of 11 isnt realy a deal
[15:33:20] <Loetmichel> JavaBean: diesel. how could it if the piston isnt moving any more?
[15:33:28] <roycroft> should i take an end mill and dump it in a vibratory tumbler for a while? :)
[15:33:33] <Loetmichel> no compression no ignition
[15:33:35] <CaptHindsight> 5 of six pretty lumpy, 3 of 4 kinda rough, 1 of 2 really bad
[15:34:17] <JavaBean> because the intake/exhaust values and if gas spark would continue even if the piston didn't move
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[15:34:32] <Loetmichel> yes it would. IF it were gas
[15:34:59] <Loetmichel> but probably not ignite either because of no gas change
[15:35:00] <CaptHindsight> the piston just ended up in the lucky spot
[15:35:20] <Loetmichel> there would not be much gas goint INTO the cylinder if the piston isnt moving
[15:35:30] <CaptHindsight> not too close to the valves and not too close to the crank
[15:35:44] <Loetmichel> CaptHindsight: right
[15:35:49] <gregcnc> what actually broke in that case that didn't cause catastrophic engine damage?
[15:36:09] <Loetmichel> but even if it destroyed the valves: we had half a dozen spare heads
[15:36:14] <CaptHindsight> and the connecting rod broke in a spot where it didn't whack the block to hell
[15:36:20] <gregcnc> yeah
[15:36:45] <CaptHindsight> was the engine made by Cat?
[15:37:00] <Loetmichel> gregcnc: the lower conrod bnearing cap broke, and the conrod fell down (V12) so it didnt interfere with the crankshaft any more
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[15:37:45] <Loetmichel> the conrod itself was fine, just the bolts/cap broke off the lower end
[15:38:17] <Rab> My homies had an old 4cyl Volvo turbo blow a hole through the piston (gas engine). They opened the oil pan (no easy task in the snow), took off the rod cap, shoved the piston up, disconnected the plug and injector, and got where they needed to go, barely.
[15:38:47] <Rab> There might have been a coat hangar or something holding the rod up.
[15:38:51] <CaptHindsight> the fun of working under a car in the cold
[15:39:02] <Rab> CaptHindsight, this was in Chicago.
[15:39:34] <CaptHindsight> my transmissions or clutches would always go when it was under 20F
[15:39:34] <Rab> They had a lot of "fun" in the snow.
[15:40:05] <CaptHindsight> sometimes I'd wait for the temp to be over 10-15F to have a warm day to fix it
[15:40:42] <CaptHindsight> teenager with free - $20 cars
[15:41:07] <Loetmichel> hehe
[15:41:24] <CaptHindsight> rev to 5-6K rpm and then pop clutch at every light was likely the problem :)
[15:41:25] <Loetmichel> i know. i drive $3000 BMWs ;)
[15:41:50] <Loetmichel> but two of them so i have a backup if one fails ;)
[15:42:18] <Loetmichel> but i am way to lazy to do the repairs myself these days.
[15:42:43] <Loetmichel> have a good cheap mechanic that is always excited to see me... "SIE schon wieder?" :-)
[15:43:16] <Loetmichel> ("YOU again?")
[15:44:15] <CaptHindsight> now it's just oil and tuneups and the every few year rebuild
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[15:48:08] <CaptHindsight> like miss0r2 the local mechanics would have very little experience with our vehicles and likely get it wrong
[15:48:49] <CaptHindsight> or just change parts until it works and charge you for all of it
[15:48:59] <miss0r2> what? Hey!
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[15:52:51] <CaptHindsight> gregcnc: how many million would your engine swap of cost?
[15:52:57] <CaptHindsight> of/have
[15:53:10] <gregcnc> 1200 in labor by an independent
[15:53:37] <gregcnc> not including stuff i replaced on the donor
[15:53:45] <CaptHindsight> is that the day rate or 1.5 days?
[15:53:57] <gregcnc> i think it was 1.5
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[16:15:11] <jymmmm> Ok, just tested my inverter, OVP right at 16V, damn
[16:16:06] <gregcnc> what did the specs say?
[16:17:15] <jymmmm> IT says 16V, but I was hoping for 16.8V
[16:17:55] <jymmmm> It's so damn hard to find an inverter that will run on LiPo voltages
[16:18:33] <CaptHindsight> mehbe we can modify the inverter to OVP @ 16.8
[16:19:29] <CaptHindsight> mehbe by changing a resistor value
[16:19:56] <jymmmm> I thought of that, but do you think we would fry something else too?
[16:20:08] <CaptHindsight> jymmmm: have you opened the inverter yet? Are part numbers visible?
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[16:20:26] <jymmmm> CaptHindsight: Reopening it now
[16:20:48] <gregcnc> I can't believe Li compatible inverters are not common today
[16:21:01] <CaptHindsight> if so please post a CLEAR high res pic of the board
[16:21:05] <jymmmm> gregcnc: I found ONE quality one
[16:21:46] <CaptHindsight> clear does not mean motion blur for dramatic effect
[16:22:18] <CaptHindsight> with enough contrast to see part numbers and traces
[16:22:38] <CaptHindsight> so lights on, flash at the proper angle
[16:23:28] <CaptHindsight> it's nice when they post a close up of the part label on ebay and all you see is a white blur
[16:26:00] <perry_j1987> man i need some of that tool organizer foam
[16:31:19] <jymmmm> Eeeesh, have to unsolder to take it apart :(
[16:32:33] <CaptHindsight> frustrating
[16:33:06] <CaptHindsight> jymmmm: no adjustment pots anywhere?
[16:33:23] <gregcnc> it seems your four cell setup is odd
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[16:33:35] <CaptHindsight> don't muck with them until you know what they do if so
[16:34:34] <CaptHindsight> gregcnc: tradition be damned
[16:34:54] <gregcnc> wide range power supplies cost more
[16:35:09] <jymmmm> I have some bullet connectors, easier than un/resoldering
[16:35:13] <perry_j1987> should i bother entertaining the idea of getting a fadal 4020
[16:35:29] <Tom_L> new?
[16:35:37] <perry_j1987> early 90s
[16:35:39] <gregcnc> very common for getting in
[16:35:41] <Tom_L> they're ok
[16:35:54] <Tom_L> on the 'cheap' end of the spectrum
[16:35:55] <perry_j1987> over 10,000 lb esh
[16:36:19] <CaptHindsight> https://www.ebay.com
[16:37:21] <CaptHindsight> perry_j1987: how much space and power do you have?
[16:38:13] <perry_j1987> in the process of shopping for a new shop
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[16:39:06] <CaptHindsight> 2 complete and working Matsuura 500's for $2400 or best for both
[16:39:31] <perry_j1987> you have?
[16:39:50] <CaptHindsight> might not see a deal like this until later this year when more shops go under
[16:40:45] <CaptHindsight> has 2x https://www.ebay.com
[16:40:56] <CaptHindsight> Franklin Park
[16:43:13] <Rab> They'd have to be paying me $1200 to look at that red all day...
[16:43:50] <CaptHindsight> Rab: how much for yellow or green? :0
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[16:44:49] <Rab> CaptHindsight, if you're doing it right, maybe the machine covers itself in green? ;)
[16:46:40] <Tom_L> purposeful, you can't see the blood spatters that way
[16:51:13] <CaptHindsight> Favorite CNC Machine Color Poll: White, 'cause it shows all the dirt
[16:51:16] <Tom_L> CaptHindsight, what industry do most of the shops up there run parts for?
[16:52:23] <CaptHindsight> Tom_L: automotive, aerospace/mil, energy
[16:52:33] <CaptHindsight> in order of mosts
[16:52:41] <Tom_L> auto still #1 up there?
[16:52:44] <Tom_L> yeah
[16:53:26] <CaptHindsight> not sure how much tool and die there is anymore
[16:53:40] <jymmmm> CaptHindsight: No trimmers at all, did find this chip... https://www.mouser.com
[16:53:48] <CaptHindsight> to west in Rockford it was automation
[16:55:54] <CaptHindsight> and machine tools
[16:56:34] <CaptHindsight> what I mostly see is niche shops with connections to local industry or whats left of it
[16:57:20] <CaptHindsight> one does mil spec fasteners, another nuclear industry, another >90% is Snap On turning
[16:58:08] <CaptHindsight> the big machine makers all have sales floors around here, but limited manufacturing
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[16:59:08] <gregcnc> place my father was working at was shut down for a week. laid off several before that
[16:59:13] <perry_j1987> back .. bad internet out here
[16:59:36] <perry_j1987> so you think those near 40 yearold matsuura's are still useable?
[17:00:01] <jymmmm> CaptHindsight: https://i.imgur.com
[17:00:06] <CaptHindsight> mine is from 1980
[17:00:13] <miss0r2> depends what you think 'usable' covers :)
[17:00:51] <CaptHindsight> jymmmm: oh it looks like single layer PCB and all through hole
[17:01:05] <jymmmm> yeah
[17:01:16] <CaptHindsight> I see 3 IC's
[17:01:29] <CaptHindsight> all the same?
[17:01:51] <jymmmm> no
[17:01:58] <perry_j1987> still running original controls or did you convert it to linuxcnc
[17:02:06] <jymmmm> trying to ident
[17:02:06] <CaptHindsight> LCNC
[17:02:28] <perry_j1987> servos or steppers on those things
[17:02:38] <CaptHindsight> DC servo
[17:02:50] <CaptHindsight> mine is a bigger one
[17:03:02] <perry_j1987> what kind of work did you have to do to get it going
[17:03:10] <CaptHindsight> https://imagebin.ca
[17:03:22] <jymmmm> CaptHindsight: No trimmers at all, did find this chip... https://www.mouser.com
[17:03:24] <CaptHindsight> skunkworks: has a 500 like the ones on ebay
[17:04:06] <CaptHindsight> perry_j1987: skunkworks did a complete LCNC swap with encoder on the spindle for rigid tapping
[17:04:18] <CaptHindsight> ask him for pics
[17:04:33] <perry_j1987> k
[17:04:33] <CaptHindsight> might still be on the LCNC wiki
[17:04:56] <CaptHindsight> if I knew that I was staying I'd get the 500's
[17:05:13] <CaptHindsight> but i want to get out of this crazy place
[17:05:37] <gregcnc> the biggest disadvantage with old iron is limited program memory
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[17:09:05] <perry_j1987> so guaranteed swap to LCNC then for any of the older ones
[17:09:23] <CaptHindsight> I can LCNC anything
[17:09:24] <gregcnc> depends if you need it
[17:10:07] <CaptHindsight> hair drier, barber chair, toothbrush, pancake flipper etc
[17:11:08] <Tom_L> CaptHindsight, and go where?
[17:12:35] <CaptHindsight> https://www.ebay.com
[17:13:28] <jymmmm> CaptHindsight: other chip has been sanded odd
[17:13:29] <CaptHindsight> Tom_L: likely somewhere in the EU
[17:13:30] <jymmmm> off*
[17:13:37] <gregcnc> https://www.ebay.com
[17:14:35] <CaptHindsight> Tom_L: somewhere where they are actually trying to move forward
[17:15:19] <CaptHindsight> Tom_L: it's not happening here in my lifetime, unless I live to >100
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[17:16:15] <jymmmm> CaptHindsight: you will live to 10000
[17:16:37] <Tom_L> china seems to be growing by leaps and bounds
[17:16:40] <CaptHindsight> willing to help any country trying
[17:16:50] <Tom_L> too bad you can't breath over there
[17:16:54] <CaptHindsight> they were, till they turned nuts
[17:17:11] <CaptHindsight> ruining HK and hope not Taiwan next
[17:17:49] <CaptHindsight> I worker on and off in China until a few years ago
[17:19:00] <CaptHindsight> waited to see if they would still go back to their old routines and they did
[17:21:25] <andypugh> CaptHindsight: How’s your Chinese?
[17:22:01] <CaptHindsight> andypugh: not good, my daughter was the fluent one
[17:22:28] <jymmmm> 谢谢
[17:23:03] <andypugh> I wonder how many from Hong Kong will decide to come to the UK?
[17:23:04] <CaptHindsight> jymmmm: that I have down like the locals
[17:23:20] <CaptHindsight> andypugh: will the UK take them?
[17:23:40] <andypugh> If they have the “overseas passport” then they have announced that they will.
[17:23:52] <CaptHindsight> they are not like the mainland Chinese
[17:24:34] <CaptHindsight> if trump is still in power next year I think they will move on taiwan
[17:27:02] <andypugh> https://www.bbc.co.uk
[17:28:40] <CaptHindsight> andypugh: how will the conservative in the UK react?
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[17:30:01] <andypugh> If Boris Johnson is in favour (who is about as right-wing as anyone in UK politics) then I would imagine there will be broad support.
[17:30:17] <CaptHindsight> most are beyond reason here
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[17:30:30] <andypugh> The left will see it as himane, the right will see it as our colonial duty.
[17:30:44] <CaptHindsight> good for them
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[17:35:34] <CaptHindsight> gregcnc: who has thermostat type wire but rated for 300V local?
[17:35:51] <jymmmm> CaptHindsight: https://cdn.datasheetspdf.com
[17:36:11] <CaptHindsight> added some mini-splits that run the indoor units at 208V
[17:36:32] <CaptHindsight> the blowers are 208V and <2A
[17:36:32] <gregcnc> like 20awg?
[17:36:37] <CaptHindsight> yeah
[17:36:51] <CaptHindsight> i think thermostat wiring is 150V
[17:37:02] <jymmmm> I thought like 24v
[17:37:23] <CaptHindsight> s, the control isgnals are but the wire rating is higher
[17:37:40] <CaptHindsight> isgnals/signals
[17:37:52] <jymmmm> Mine look like CAT3 wire -shrug-
[17:38:24] <jymmmm> CaptHindsight: Well, that's the 3 chips
[17:38:29] <Tom_L> plenum is 300v
[17:38:34] <Tom_L> 18ga
[17:38:59] <jymmmm> 18ga solid?
[17:39:00] <CaptHindsight> the runs are 15ft and 30 ft
[17:39:06] <Tom_L> normal is 150v 18 or 20ga
[17:39:24] <jymmmm> why 150V for 24V signal?
[17:39:32] <Tom_L> just because
[17:39:37] <CaptHindsight> I have miles of MTW at 300V min
[17:39:52] <CaptHindsight> rather not run conduit
[17:39:55] <gregcnc> no idea, never had a need for that I usually go to steiner or northwest
[17:40:32] <jymmmm> Eh, just run CAT5 and be done with it
[17:41:02] <CaptHindsight> 3 conductors per head, 208Vac and a signal wire
[17:43:45] <CaptHindsight> 4 with ground, but there is copper for refrigerant, but can't be used as grounds yet are so you get an instant loop
[18:02:13] <Tom_L> ok, rpi working again
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[18:07:34] <Tom_L> anyone recall the ini section to limit tool table columns?
[18:08:24] <Tom_L> found it
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[18:08:32] <Tom_L> [DISPLAY]
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[18:22:38] <perry_j1987> gah the shop beer fridge is hitting me again today haha
[18:22:42] <perry_j1987> havnt gotten anywork done yet
[18:23:05] <perry_j1987> just taking calls; answering questions and keeping cool with frosty beer
[18:23:07] <perry_j1987> tough life here
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[19:09:49] <CaptHindsight> jymmmm: back, I see they have a microcontroller in there
[19:10:52] <CaptHindsight> that complicates things
[19:11:14] <CaptHindsight> I'd have to see how they detect the input voltage level
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[19:29:46] <gregcnc> jymmmm if you charge to 4V you'd be doing you batteries a favor and be able to run the inverter
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[19:53:14] <veegee> I need to come up with a VFD design that steps up to 600V without a transformer
[19:53:25] <veegee> essentially a transformerless step up inverter
[19:54:03] <veegee> 240V to 600V is < 1:3 ratio, should be doable in a single stage without too much efficiency loss
[19:55:21] <SpeedEvil> Flying cap
[20:04:48] <jymmmm> CaptHindsight: Yeah, I noticed that too
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[20:05:06] <jymmmm> gregcnc: Even at 4v, still the OVP kicks in
[20:06:43] <veegee> The amount of money I've spent on knipex boggles my mind
[20:08:53] <veegee> but those cobra and pliers wrench stuff is just beautiful
[20:10:15] <veegee> zero backlash parallel jaws, it's what everyone wants in pliers
[20:14:43] <Tom_L> kinda makes ya not wanna use em ehh?
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[20:24:14] <jymmmm> CaptHindsight: I think I found something https://www.youtube.com
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[20:37:23] <gregcnc> too much coffee
[20:38:40] <Tom_L> JT-Cave, thanks again for all your docs
[20:38:49] <Tom_L> building 2.8 on the rpi again
[20:39:40] <Tom_L> the img file i save that had it was bad so i backed up one and punt
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[20:41:15] <jymmmm> gregcnc: You had too much coffee? Eat an orange (seriously)
[20:41:27] <gregcnc> that dude in teh video, holy shit
[20:41:38] <jymmmm> gregcnc: oh, heh, too fast?
[20:42:00] <gregcnc> I thought somehow I had 2x on from the last one i watched
[20:42:34] <jymmmm> gregcnc: Near the end, he briefly shows that he had already converted a HF inverter to LiPo
[20:44:22] <jymmmm> gregcnc: So I guess I just have to locate the resistor divider and/or zener, then maybe change the caps from 16V to 25V
[20:44:56] <gregcnc> yeah i was going to suggest a voltage divider somewhere if you want to cheat
[20:45:55] <jymmmm> gregcnc: Yeah, jsut shift the LVD and the OVD
[20:46:28] <jymmmm> gregcnc: In the comments/iinks he talks about how to poke around the circuitry
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[20:49:35] <gregcnc> my choice would be 7S and 24V inverters, seems pretty common
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[20:50:26] <gregcnc> but I was pretty sure I saw Li compatible when I was looking for inverter chargers
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[20:51:13] <jymmmm> gregcnc: I read that too. I ordered a 4S 60A BMS from china, and I don't want to just waste it
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[21:28:29] <veegee> Tom_L I use them all the time. Very good quality steel, hardness as specified. They don't dent and deform like cheapo chinese steel pliers
[21:30:26] <Tom_L> yeah i've got a few good tools i know the feeling
[21:32:16] <Tom_L> ok 2.8.0~pre1 rebuilt and running on the pi again
[21:48:56] <Connor> andypugh: Got the Collet closer working for the lathe. The cam mech wasn't sliding.. Was seized up. Had to press it off, clean it up and oil it.
[21:49:54] <Connor> To to figure out how to dial in the run out on the back of the spindle that it mates with.
[21:50:36] <Connor> and maybe open up the cover so I can take it on/off without having to remove the spline.
[21:58:30] <veegee> Pipe threads seem to engage significantly better after blasting with crushed glass and wire brush
[21:59:00] <veegee> Also, not sure why crushed glass is considered "not reusable". Feels like I can reuse it just fine.
[21:59:16] <Tom_L> use it for foot scrubber
[21:59:55] <Tom_L> knocks the crest off the threads
[22:01:03] <Tom_L> hope you cleaned the pipe out
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