#linuxcnc Logs
Feb 08 2020
#linuxcnc Calendar
02:02 AM Deejay: moin
02:31 AM veegee: YAY found a local company that has kerosene at the pump
02:32 AM XXCoder: for lighting or what?
02:32 AM veegee: CAD $1.70/L. 87 AKI gasoline is $1.20/L
02:32 AM veegee: XXCoder for cleaning oil and grease while I rebuild my machine
02:32 AM XXCoder: ahh stripping oil off?
02:32 AM XXCoder: +grease
02:33 AM veegee: yes, it works perfectly
02:33 AM XXCoder: never knew that. interesting
02:33 AM veegee: But if you buy it from the store as camp fuel, it's super expensive
02:33 AM veegee: well any light hydrocarbon works
02:33 AM veegee: Advantage of kerosene is that it's highly refined, no additives, meant to be used as a heat/cooking fuel, very very safe like diesel
02:34 AM veegee: Not water based so doesn't cause risk of rust on my mill
02:34 AM XXCoder: indeed
02:34 AM veegee: Also not volatile and barely has any odor. It's like diesel without the additives and much cleaner. You can drop a match into a bucket of it and the match will extinguish
02:34 AM veegee: I'd use gasoline, but that's super dangerous
02:36 AM veegee: Xylene is even better for cleaning, but $10/L in the store. I'll probably mix some gasoline into the kerosene, or possibly just distil the kerosene to remove the very longest chain hydrocarbons and make it slightly more volatile
02:36 AM XXCoder: isnt there eyminzes to break them down? (cant spell the word)
02:36 AM veegee: Also I want to use a regular car oil filter to filter my used kerosene. I just need something that can screw into the center so I can attach it to my pump
02:37 AM XXCoder: nice. can even multi-stage it
02:37 AM XXCoder: then when filter go bad you can downgrade all of em one step down and add brand new one at end
02:37 AM veegee: Yeah. If you leave a bucket overnight, all the metal flakes and disgusting stuff settles to the bottom and the top becomes almost as clear as it was fresh
02:38 AM veegee: FOr now I dropped very strong magnets into the bucket to keep the metal particles in place while I swish the parts I want to clean around in the bucket
02:38 AM veegee: This mill is looking like brand new condition again
02:39 AM XXCoder: man I love that guy https://www.youtube.com/watch?v=_XEaeenp1DE
02:39 AM XXCoder: thats awesome :)
02:41 AM XXCoder: that video is secpond part
03:07 AM Tom_L: morning
03:39 AM -!- #linuxcnc mode set to +v by ChanServ
05:25 AM jthornton: morning
05:26 AM XXCoder: hey jt
05:42 AM XXCoder: jthornton: https://www.aliexpress.com/item/33022733906.html
05:42 AM XXCoder: slightly temped to get it lol but nah
05:42 AM XXCoder: hm larger than I thought. nema57s
05:46 AM jthornton: better off building something with some linear rails
05:46 AM syyl: it even has handles.
05:46 AM XXCoder: yeah i have cnc router i dont need that really
05:47 AM jthornton: which router do you have
05:47 AM XXCoder: ogh chinese 6040 or something
05:47 AM XXCoder: its been idle so long :(
05:47 AM XXCoder: just no room. i wanted to do stuff so I got laser machine ebcause its so much smaller
06:34 AM jdh: never heard of a nema57. seems unlikely
06:34 AM XXCoder: theres many nema sizes
06:36 AM XXCoder: i think nema102 exists as max size known? might be wrong
06:36 AM jdh: looks like chinese nema57 is a 23?
06:37 AM XXCoder: its size in mm
06:38 AM XXCoder: 23 is 23mm corner to corner. 57 is sigifcantly larger
06:39 AM XXCoder: https://www.alibaba.com/product-detail/130B23-3-phase-nema-52-stepper_62065783623.html nema 53
06:39 AM jdh: 23 is 2.3 inches
06:40 AM jdh: a 23mm corner to corner would be less than an inch
06:40 AM XXCoder: youre right, somehow I was always thinking it as in mm lol
06:40 AM _unreal_: morning
06:40 AM XXCoder: hey
06:40 AM _unreal_: I'm trying to find an SCR to drive my relays
06:40 AM _unreal_: I got some really expensive relays but the coil is 120Vac driven
06:41 AM _unreal_: http://www.farnell.com/datasheets/1729804.pdf?_ga=2.71332947.1537898079.1581122193-863356210.1580098933
06:41 AM _unreal_: T92S11A22-120
06:42 AM _unreal_: I'm trying to find an SCR that is TTL controllable so I can control the relay. This relay will drive the main coil for the my motor controller
06:42 AM jdh: 3-30v input SSR's are cheap
06:43 AM _unreal_: ssr?
06:44 AM unterhaus: I assume nema 57 would be many horsepower
06:44 AM _unreal_: oh solid state relay
06:44 AM _unreal_: I dont need an other relay
06:44 AM _unreal_: I just need to control the coil pins on this relay I have
06:44 AM _unreal_: and I'm not driving a super high powered transformer with an SSR
06:45 AM _unreal_: ssr's make heat
06:46 AM unterhaus: there are clearpath servos in nema 56 and 143
06:46 AM unterhaus: they skip 42 for some reason
06:47 AM _unreal_: fuck 42
06:47 AM XXCoder: http://www.electricmotorservice.net/nemachart.pdf
06:47 AM XXCoder: anyone want nema449?
06:47 AM jdh: that would be silly for a stepper
06:47 AM XXCoder: 14 inches bolt to bolt length
06:48 AM XXCoder: heavy af I bet
07:32 AM X704 is now known as tiwake
07:53 AM unterhaus: my bridgeport came with nema 42 steppers. Nowadays that's a much more capable motor
07:53 AM unterhaus: it also came with a tape drive
07:53 AM unterhaus: and an lsi-11 minicomputer
07:53 AM unterhaus: but you have to be old to know about those
07:54 AM unterhaus: all that stuff had been gutted when I bought it
08:01 AM X704 is now known as tiwake
08:04 AM gregcnc: ABB's 450 size motor is only 1MW.
08:07 AM unterhaus: researchgate pfft
08:07 AM unterhaus: pfft is the sound of spitting
08:08 AM gregcnc: what are you researching
08:08 AM unterhaus: right now, fatigue in additive materials
08:08 AM unterhaus: specifically, crack initiation and high cycle fatigue
08:09 AM SpeedEvil: Drill little holes at each side of each grain boundary to prevent crack initiation.
08:10 AM unterhaus: there is a computer scientist with the same name and his coauthors keep adding me to their projects
08:10 AM XXCoder: unterhaus: https://www.smbc-comics.com/comic/citations-needed
08:10 AM unterhaus: I think stop drilling only works on sheet metal
08:10 AM SpeedEvil: unterhaus: how to get published the easy way
08:12 AM unterhaus: I don't believe I have seen et al in many engineering papers. Style is to list all authors
08:13 AM unterhaus: but there are an awful lot of people with my name out there
08:13 AM XXCoder: heh wont happen to me. my name is so far I know, unique in combination of first and last name.
08:13 AM unterhaus: not only am I getting flooded with comp sci papers, but also electrical engineering and medical papers
08:14 AM unterhaus: somebody tracked me down and claimed I was her father
08:14 AM unterhaus: nope
08:14 AM XXCoder: so funny
08:14 AM XXCoder: might be not very funny very fast
08:14 AM unterhaus: sadly, no activities that would lead to procreation in the year before her birth
08:15 AM unterhaus: on my part, anyway
08:15 AM gregcnc: but why are they finding you and not who they intend
08:15 AM unterhaus: if you are talking about the academics, no idea, they are morons
08:16 AM unterhaus: someone even added me to their lab. Don't they know their guy's email address??
08:17 AM unterhaus: I think the problem is the ones I have problems with don't have a researchgate account
08:18 AM unterhaus: One of them appears to be a social scientist
08:19 AM unterhaus: I tried to talk one of them into having an account, no answer to my email
08:20 AM gregcnc: any of you live in state where you can't pump your own gas? What is the reason for this?
08:21 AM unterhaus: I used to buy gas in NJ. I always thought it was corruption
08:21 AM skunkworks: ? that is a thing?
08:21 AM gregcnc: it is. and I just saw they may try to push it through i IL
08:21 AM unterhaus: I think you can pump your own gas in New Jersey now, not sure
08:22 AM unterhaus: you can waste a few hours on youtube watching gas station fires
08:22 AM unterhaus: possibly where they got the idea
08:22 AM gregcnc: but is that the reason?
08:23 AM unterhaus: certainly there are a lot more employees per gas station in New Jersey than in Pennsylvania
08:23 AM unterhaus: and their gas is cheaper, somehow
08:23 AM unterhaus: okay, it's probably road taxes, their roads are horrible there
08:24 AM skunkworks: someone died pumping their own gas...?
08:24 AM unterhaus: I'm sure they did, people are always setting gas stations on fire
08:26 AM gregcnc: probably between fires and spills the state thinks they need to save us from ourselves
08:26 AM unterhaus: frequently asked questions on google "what should you do if your gas pump catches on fire"
08:26 AM gregcnc: or maybe pump and run skimmers etc...
08:27 AM unterhaus: people are always introducing legislation, doesn't mean it even gets out of committee.
08:27 AM gregcnc: and the stolen cards and 500 gallon tanks hidden in vans
08:27 AM unterhaus: I suppose people stealing gs might be a problem
08:28 AM gregcnc: but this is IL were talking about it need not make sense
08:28 AM unterhaus: we stopped at a gas station in West Virginia that had peoples pictures plastered all over the front window because they stole gas
08:29 AM unterhaus: my mom got pulled over once for not paying for gas. Fortunately she had the receipt
08:30 AM unterhaus: I think I might go back and talk to the manager
08:37 AM unterhaus: how do you use a precision level to make something vertical?
08:38 AM unterhaus: I need a shorter level
08:41 AM skunkworks: a square
08:42 AM skunkworks: * precision angle plate
08:46 AM unterhaus: pretty difficult to get a good horizontal reference on my lathe
08:48 AM unterhaus: starrett has what they call a "cross test level"
08:49 AM unterhaus: $50 on amazon
08:54 AM unterhaus: there is a ratty looking one on ebay for $25
08:58 AM unterhaus: looks liek those are for flatness
08:58 AM unterhaus: bummer
09:00 AM unterhaus: looking again, the 134 has a vial that would work for vertical
09:03 AM unterhaus: amazon listing says 2 vials though. Weird
09:07 AM jymmmm: Good morning
09:09 AM skunkworks: jymmmm: !
09:09 AM jymmmm: Hey skunkworks =)
09:10 AM unterhaus: one of the amazon reviews about the starrett 134 says it comes with a note from Starrett that it's not intended to be square
09:10 AM unterhaus: starrett really went downhill about 20 years ago
09:12 AM skunkworks: can't you just level the bed over its distance? what are you actaully wanting to do?
09:13 AM skunkworks: (we through a 20"X10' lathe and found out it was so unlevel that it was cutting a .005" taper over 6 inches...)
09:13 AM skunkworks: threw
09:13 AM skunkworks: leveling it fixed it. (
09:14 AM skunkworks: wow - I might not be a good communicator this morning
09:15 AM skunkworks: * we set a lathe without leveling it and found out it cut a heck of a taper.. leveling fixed it.
09:16 AM unterhaus: I'm adding a plate to the back so I can mount an encoder
09:17 AM unterhaus: It wouldn't take much to get it vertical enough
09:18 AM unterhaus: a couple of the starrett bench levels have vials for plumb
09:21 AM unterhaus: I have a nice precision level for the lathe itself, I'm going to level it any day now
09:22 AM unterhaus: I borrowed a super precision level to set it. Someone had it set way out of whack
09:38 AM sync: unterhaus: a quick search shows older starrett boxes with the same note
09:38 AM sync: and they are probably right in saying so, as the intended purpose seems to be mostly using it laying flat on something
09:40 AM unterhaus: it has a vial for plumb, although that surface may be okay
09:40 AM unterhaus: it would work for my purposes, pretty sure
09:41 AM unterhaus: I could use a right angle plate and my level, would be unweildy
09:43 AM unterhaus: I always wanted the short Starrett machinist level, just would rather not buy it right now
09:48 AM unterhaus: I didn't know ebay had auctions with best offer. Huh
09:49 AM Rab: I've had pretty good luck making offers.
09:49 AM unterhaus: made an offer for a 98-4
09:49 AM unterhaus: made it for over his starting bid, which is more than reasonable
09:51 AM Rab: It can result in some awkward situations, however, because eBay has dark patterns to trick sellers into enabling the "Make Offer" option when they didn't mean to.
09:51 AM unterhaus: I don't remember seeing that option, but I haven't listed anything recently. I know they really want you to have free shipping, and their shipping calculator stinks
09:52 AM unterhaus: either calculates really low or really high.
09:53 AM Rab: What I've heard is that "Make Offer" is default for new *and* renewed listings, and you can choose autorenewal, so your listing which you had disabled offers for renews with the option.
09:53 AM unterhaus: my preferred listing technique is .99 cents and actual shipping
09:53 AM unterhaus: usually I just want to get rid of stuff by the time I list it
09:54 AM unterhaus: 99 cents and free shipping would be okay sometimes
09:55 AM unterhaus: someone had the starrett 134 listed for $200 more than suggested retail. Best of luck to that seller. Starrett lists prices for that stuff on their site
09:56 AM unterhaus: I need to get rid of my servo drive collection. My apologies to anyone I outbid
10:28 AM Deejay: re
11:04 AM unterhaus: guy accepted my offer, hopefully it's usable
11:33 AM unterhaus: Is a solid carbide boring bar really worth the premium?
11:35 AM _unreal_: no idea
11:35 AM _unreal_: ok second opinion
11:35 AM _unreal_: I'm trying to decide what I should do as far as how to setup my motors on this new machine I'm building
11:36 AM SpeedEvil: unterhaus: they are quite a lot more rigid
11:36 AM _unreal_: currently I have a 1/2-13 twin lead screw to drive the Y axis
11:36 AM _unreal_: I have a 48 tooth pulley on each lead screw
11:36 AM _unreal_: I'm trying to decide how to interface my motor
11:37 AM _unreal_: the brushed motor curently has a 20 tooth pulley on it
11:37 AM _unreal_: the motor its self is rated for 24oz/in
11:37 AM _unreal_: I'm wondering if I should get a 12 tooth pulley for the motor
11:38 AM _unreal_: or if I should gear the motor with a second pulley setup
11:38 AM _unreal_: I'm not sure what the force on the current setup would equal
11:39 AM _unreal_: ?
11:45 AM unterhaus: SpeedEvil, I see it has young's modulus much higher than steel
11:46 AM SpeedEvil: Indeed - there are a bare handful of materials that stiff
11:48 AM SpeedEvil: Berylium comes pretty close, but has its own issues. Molybdenum is hard to make stuff with due to ridiculous temperature it melts at, same with tungsten (metal) and osmium is a platinum group metal
11:50 AM SpeedEvil: As a general note, if you can have a steel boring bar ~1.3 or so times the diameter as a carbide boring bar, the steel one may be nearly if not as stiff
11:52 AM unterhaus: I haven't been too happy with the boring bars I have for holes less than 1/2"
11:52 AM unterhaus: bigger holes are fine
11:54 AM unterhaus: I need to research tng inserts to see if I can make the 1/2" boring bar work better
11:54 AM SpeedEvil: What sizes of holes?
11:56 AM unterhaus: I was mostly in a carbide boring bar for 1/2" holes. I think much smaller than that and I would be happy with the hole quality from a drill
11:57 AM unterhaus: *looking for a carbide ...
11:59 AM unterhaus: you gotta love ebay search, searched for solid carbide drill bits and got HSS drill bits
12:29 PM _unreal_: THERE finally
12:29 PM _unreal_: I just ordered my SMD parts for ve7it's servo controller
12:30 PM _unreal_: oh hi ve7it
12:30 PM _unreal_: ve7it, I just discovered I dont have a way to program the 30F pics
12:30 PM _unreal_: I just ordered a pickit3
12:31 PM _unreal_: I have the minipro and k150 and both of them dont support the 30f :(
12:38 PM _unreal_: so who is around?
12:46 PM ve7it: _unreal_, just got a cup of coffee... pickit3 should work well... I have an old pickit2 and it was great for all the pics I was using
12:48 PM _unreal_: ya I was rather shocked and disipointed to find that my current programers dont support it
12:48 PM _unreal_: just ordered the bleeping SMD parts so I can finish the motor controllers finally
12:49 PM _unreal_: next week I "" SHOULD "" get a bunch of parts ariving finally
12:50 PM _unreal_: !!!!! there it is
12:50 PM _unreal_: I thought I had a 22ohm SMDs
12:50 PM _unreal_: just found the @#$@#$ strip on the floor
12:52 PM ve7it: https://drive.google.com/open?id=1YtbRzhx934Tm7KVqALQBrCjEvObhQV1S
12:52 PM ve7it: https://drive.google.com/open?id=1MDInm0Ag94OvpIG8_KDVlwJVeIzt8vSA
12:52 PM ve7it: just finished latest project
12:55 PM ve7it: I wish now I had done a pcb.... hand wiring was very time consuming, I only had 2 op amp inputs wired backwards... no smoke was released during this project
12:57 PM _unreal_: nice
12:58 PM _unreal_: there 3 more SMD parts added
12:58 PM ve7it: what are you using for a spindle on your new cnc?
12:58 PM _unreal_: so much for putting blood sweat and purple smoke into it
12:58 PM _unreal_: so far I have not picked one
12:58 PM _unreal_: I have not even finished Z
12:59 PM _unreal_: until I get Z designed I'm not likely to ether
12:59 PM _unreal_: but I will for sure go with ether a china spindle
12:59 PM _unreal_: or a DIY BLDC
01:00 PM _unreal_: I'd LIKE to have a high power super short BLDC spindle
01:00 PM _unreal_: using an RC modle motor
01:00 PM _unreal_: I've seen some very nice designs
01:00 PM _unreal_: great for HIGH rpm projects
01:01 PM ve7it: ah... for a bigger machine, I have my eye on using a front load washing machine drum drive motor... there are 2 types.. a direct drive which I think andy has played with for servo use and a really cool 3 phase 16000rpm motor that would make a nice medium speed drive for a spindle
01:02 PM unterhaus: I wish I could figure out how to use the spindles I have from a moore grinder
01:02 PM unterhaus: have the driver too, just don't understand the cooling/lube
01:05 PM ve7it: https://www.ebay.ca/itm/C20-ER16A-150L-Collet-Chuck-Holder-Straight-Shank-for-CNC-Milling/302982847588 one of these mounted in 3 high speed bearings would be interesting
01:06 PM ve7it: unterhaus, must be some info around... service manuals?
01:07 PM unterhaus: no service manuals I can find. Moore is a ghost town nowadays
01:07 PM unterhaus: except for nanotech
01:10 PM _unreal_: ve7it, ya that looks like its a bit of wiring time
01:11 PM _unreal_: ve7it, I'll be back and forth a bit. my father is home looks like a skeleton and is expecting to be visited by a nurse later on
01:11 PM ve7it: if I had done a pcb, I still would have had a wiring error.... I screwed up drawing the schematic... got the + and - inputs swapped on 2 op amps.. a cut and paste error
01:12 PM _unreal_: for an IV treatment
01:12 PM _unreal_: heh
01:12 PM _unreal_: OOPS
01:12 PM _unreal_: never done that before
01:12 PM _unreal_: My fave was swapping top and bottom sides of a dual sided PCB
01:12 PM _unreal_: I did it flawless just backwards
01:12 PM _unreal_: made soldering a ahh heh CHORE
01:14 PM SpeedEvil: 'bend the DIP backwards' ?
01:15 PM _unreal_: ? no
01:15 PM ve7it: at least building from the schematic, I discovered the error... I see a lot of designs posted with obvious errors ... poor bastards that arent designers dont have a hope in getting the thing working
01:15 PM _unreal_: the it ment that the solder pads where on the wrong side. so I had to float parts HIGH to solder them
01:16 PM _unreal_: ya it will be nice to get this thing going
01:16 PM _unreal_: I cant wait to get the motor controller working
01:17 PM _unreal_: oh ve7it I broke down and ordered caps
01:17 PM _unreal_: 27,000 uF 75v caps
01:17 PM _unreal_: $80 later
01:17 PM _unreal_: or did I tell you already?
01:44 PM gregcnc: ve7it http://www.dieselrc.com/projects/cncspindle/
02:14 PM unterhaus: I don't see where he puts the magnets back in there on that spindle
02:22 PM gregcnc: what magnets?
02:22 PM unterhaus: it's a brushless motor, no?
02:22 PM gregcnc: yes
02:22 PM unterhaus: have to be magnets
02:23 PM gregcnc: lol
02:23 PM gregcnc: the spindle has been running for over a decade
02:26 PM unterhaus: i know, I just didn't see where he puts the magnets back in, I didn't say they weren't there
02:26 PM unterhaus: is it yours?
02:28 PM unterhaus: I think they are there in the balancing pic, as would make sense
02:28 PM gregcnc: http://www.dieselrc.com/projects/cncspindle/025.jpg
02:29 PM _unreal_: if it has no magnets its an induction
02:29 PM _unreal_: err no even induction has magnet
02:29 PM _unreal_: dual coil motors have no magnets
02:29 PM gregcnc: induction does not use permanent magnets
02:30 PM gregcnc: in that pic you see the stator. the black part on the shft is the magnet assembly
02:31 PM gregcnc: If I was bored I'd redesign it and put the motor between the bearings to shorten the assembly
02:32 PM gregcnc: balancing something like that is not easy
02:32 PM unterhaus: okay, I thought neu only did bldc motors
02:33 PM gregcnc: it is BLDC
02:33 PM gregcnc: second image shows the parts
02:33 PM _unreal_: see the banana connectors
02:34 PM _unreal_: gregcnc, are you in the USA?
02:34 PM gregcnc: yes
02:34 PM _unreal_: What I'd like to do is build a custom micro high power spindle for my new cnc
02:34 PM gregcnc: why not use somethign that's out there
02:35 PM _unreal_: What I'd like to do is has turn this new mill I'm building into a 5 axis
02:35 PM _unreal_: 2 axis spindle
02:36 PM _unreal_: gregcnc, got to get going I'll talk to you later when I get baCK
02:36 PM gregcnc: ok
02:37 PM gregcnc: unterhous it's built exactly like the CAD image. the magnet assembly is a cylinder as the second image on the page shows.
02:41 PM unterhaus: I was looking at the spindle picture wrong, I didn't realize how short the motor is compared to the spindle
02:50 PM CaptHindsight: why would I want to DIY this? https://www.ebay.com/itm/NSK-Nakanishi-NR-5045E-High-Speed-Spindle-40-000-EM25N-5000-Motor-50-000/183946813567
02:50 PM CaptHindsight: US $675 or best
02:52 PM gregcnc: yeah all depends on tooling and how you want to drive it
02:53 PM CaptHindsight: so mnay nice used or NOS spindles around
02:53 PM gregcnc: https://www.ebay.com/itm/272817231824 I need one of these, but cheaper and sooner than 2 months
02:55 PM CaptHindsight: gregcnc: local delivery is by pidgeon
02:55 PM gregcnc: bison might have these
02:56 PM CaptHindsight: oh Zoro, with Chine being closed due to illness ...
02:56 PM CaptHindsight: China
02:56 PM gregcnc: it's haimer. you think china?
02:57 PM CaptHindsight: Zoro is a local seller for many things China, they used to stock in Buffalo grove
02:57 PM CaptHindsight: but now it's all external warehouses and software trickery
02:57 PM CaptHindsight: it might be sooner being a non Chinese product
02:58 PM CaptHindsight: they might have just added a month to all their product listings due to spring festival and coronavirus
02:58 PM unterhaus: the ebay spindle category is an interesting mix
02:59 PM CaptHindsight: unterhaus: yeah filter out the ChinaCo stuff and it is pretty nice
02:59 PM unterhaus: I think this is like the moore spindles I have https://www.ebay.com/itm/Moore-55000-RPM-Grinding-Head-Inv-13888/332311904545?hash=item4d5f554121:g:ggMAAOxyzGlQ5wYT
03:00 PM unterhaus: those things are really tippy, I have had one fall on my head more than once
03:00 PM unterhaus: as I was taking it down from a shelf
03:00 PM unterhaus: Always caught the spindle before it hit something else though
03:02 PM gregcnc: the pain with small spindles and CNC milling is not having quick change tooling
03:06 PM CaptHindsight: https://www.automationtechnologiesinc.com/products-page/cnc-atc-spindles/
03:06 PM CaptHindsight: but china
03:07 PM CaptHindsight: https://www.ebay.com/itm/NSK-Nakanishi-NR50-5150-ATC-Spindle-Max-50-000rpm/192654741226 $550
03:07 PM gregcnc: it's out there, wasn't really when I did mine
03:07 PM unterhaus: I wonder if there is some high-end cnc out there that just changes high speed spindles
03:08 PM gregcnc: i think that one lacks a motor
03:08 PM unterhaus: can we all agree that a motorized spindle requires wires?
03:08 PM gregcnc: there are small fast spindles with ATC, but $$$
03:09 PM CaptHindsight: unterhaus: sure, they use something like these https://www.ebay.com/itm/4-5KW-BT30-Automatic-Tool-Changer-ATC-Spindle-Motor-Air-Cooling-24000RPM-220V/114010130749
03:09 PM CaptHindsight: or the cartridge spindles
03:09 PM gregcnc: but 30 taper is no longer small
03:10 PM gregcnc: ISO10 taper is about the same size as ER16
03:10 PM CaptHindsight: ISO20
03:10 PM unterhaus: bt30 on that thing, it must be huge
03:12 PM CaptHindsight: $1500, iso20 with ATC https://www.ebay.com/itm/1-8KW-220V-ISO20-Automatic-Tool-Change-ATC-Water-Cooled-Spindle-Motor-CNC-Mill/163967359177
03:12 PM unterhaus: my boss got a collet system for the air bearing spindle I used to use. Could not tap that thing in
03:15 PM unterhaus: iso20 must be fairly small
03:16 PM unterhaus: I don't understand what system that's supposed to go in
03:16 PM unterhaus: is the tool changer just a rack of toolholders that gets moved under the spindle?
03:20 PM CaptHindsight: https://www.ebay.com/itm/ATC-Tool-Change-Adapter-for-65mm-Chinese-Spindle-0-8KW-or-1-5KW-New-Version/283356272848
03:20 PM CaptHindsight: This spindle is suitable for the "china spindle" of 65mm outer diam and 49.5mm neck diam. The assembly is quick and very simple. It is screwed onto the spindle shaft and attached to the spindle.
03:29 PM unterhaus: video is interesting. Needs further explanation
03:30 PM unterhaus: their example spindle has a ER style collet chuck, but the back looks like it might be an ATC spindle
03:31 PM unterhaus: I thought most of the "china spindle"s out there had a fixed collet chuck
04:06 PM Deejay: gn8
04:07 PM gregcnc: those are ATC adapters
04:08 PM gregcnc: a German company came up with the idea quite some time ago
04:12 PM unterhaus: I didn't really understand how it worked. Does it require air?
04:13 PM unterhaus: okay, I see the air inlet now
04:13 PM syyl: i have one of those iso10 ATC attachments
04:13 PM SpeedEvil: Battery in the back, can run at 1kW for a minute, then needs put back in the toolchanger.
04:15 PM gregcnc: https://www.youtube.com/watch?v=DTC-lwiDfX8
04:15 PM syyl: i would be super scared to run them unattended in for automatic toolchange
04:15 PM syyl: they dont have a drawbar sensor
04:17 PM unterhaus: the spindle has a button on the back you have to push on to actuate the drawbar?
04:17 PM fjungclaus1 is now known as fjungclaus
04:18 PM syyl: usually they require air from the outside and a valve
04:18 PM syyl: at least mine does
04:19 PM syyl: the tool is clamped via a spring stack
04:19 PM syyl: and released by air
04:24 PM unterhaus: so what does the adapter provide that isn't already there?
04:25 PM SpeedEvil: I was assuming high speed
04:25 PM SpeedEvil: - being more serious
04:26 PM gregcnc: quick change tooling
04:27 PM gregcnc: the spindles the adapters are made for are as simples as hand held router to the chinese hf spindles
04:27 PM CaptHindsight: https://www.youtube.com/watch?v=TBrx-qgHQcU
04:27 PM CaptHindsight: and the printed plastic version (don't ask why) https://www.youtube.com/watch?v=OTaon2fveP4
04:33 PM unterhaus: for some reason the mostly plastic video reminds me I should go finish my conduit bending project
04:34 PM unterhaus: I watched enough utubes that I thought I understood conduit bending. Nope
04:36 PM andypugh: The MPCNC seems to have taken the clever Ultimaker design that allows all motors to be stationary, and modified it so that all motors move.
04:38 PM CaptHindsight: andypugh: well they wanted a "newer" design
04:39 PM unterhaus: is the ultimaker corexy kinematics?
04:40 PM unterhaus: seemingly not, because people are compare/contrast the two
04:41 PM andypugh: No. It is like that one on the video, except with moving belts and stationary motors.
04:41 PM andypugh: There are two moving bars, and the head is where they cross.
04:42 PM unterhaus: z also has a stationary motor?
04:43 PM andypugh: I think its a moving platform. It’s a printer so Z moves slowly and rarly.
04:44 PM SpeedEvil: https://www.youtube.com/watch?v=TDxpVSXmKiE 'it looks like this printer was entirely esigned by a marketing department and not by someone who has used a 3d printer before and knows how to build a proper one' - almost everything is wrong.
04:47 PM CaptHindsight: but it uses leadscrews!
04:50 PM CaptHindsight: other than the wiring and the way it is assembled what is so wrong about it?
04:51 PM _unreal_: gregcnc, hi I'm back
04:52 PM _unreal_: had to take my father out for shopping, he just got home from the Health rehab place since his surgery.
04:52 PM _unreal_: gregcnc, so ya I'm toying with ether buying a spindle or building
04:53 PM _unreal_: What I'd LIKE to do is building an ultra compact high power spindle
04:53 PM _unreal_: The smaller one's from china are not what I need
04:54 PM gregcnc: how small
04:54 PM _unreal_: gregcnc, NOT the most recent photo I need to take a post some new stuff https://drive.google.com/open?id=1iklKpYIqOhs70yq-xktLj4IxJeOcpPkq
04:54 PM _unreal_: there is now a hole in the top steel plate
04:55 PM gregcnc: doesn't look small
04:55 PM gregcnc: what features do you need that the china spindles don't offer?
04:56 PM _unreal_: compact high power lower heat production
04:56 PM _unreal_: and solid shaft not extended bs shaft
04:56 PM unterhaus: CaptHindsight other than the underpowered steppers, the catching on fire and the wiring, it's all great
04:56 PM CaptHindsight: unterhaus: yeah, so no big deal
04:57 PM gregcnc: done any cutting power math?
04:57 PM _unreal_: gregcnc, I have 2x2" 1/4" thick walls square tube that is going to be the main Z extension mount
04:57 PM _unreal_: I want to make a pan tilt head for the Z
04:57 PM unterhaus: I like the rail they used
04:57 PM _unreal_: I have two choices, keep it as a FIXED spindle or make it multi direction.
04:58 PM _unreal_: I'd like to produce the multi direction
04:58 PM _unreal_: gregcnc, I have aprox 10" of plunge
04:58 PM _unreal_: gregcnc, the cordless drill should give a good idea of the size of the machine
04:59 PM CaptHindsight: https://www.youtube.com/watch?v=lIVdwP0RAN8 Oasis 3DP, an open source powder and inkjet 3D printer
04:59 PM gregcnc: can you do lathe work to a few microns?
05:00 PM _unreal_: I dont own a lathe
05:00 PM _unreal_: thats my problem
05:00 PM gregcnc: how are you going to make a spindle?
05:00 PM _unreal_: toying with the idea of "HE'S LOOKING AT YOU KID"
05:01 PM gregcnc: no idea what that means in this case
05:02 PM _unreal_: https://external-preview.redd.it/kfRlBHJibZEUvfvMHehCX3e0draePekwOs92WYWrlFI.jpg?auto=webp&s=4f86ab730a48abd5015fd505eb8e78de9363f6ae
05:02 PM _unreal_: you hav e a lathe ya?
05:02 PM gregcnc: doesn't somebody sell those?
05:02 PM _unreal_: and what the idea of what I'm looking at
05:02 PM _unreal_: no
05:02 PM _unreal_: not that I have found
05:02 PM syyl: that does not look to convincing
05:03 PM gregcnc: what are you cutting?
05:03 PM gregcnc: you don't want open motors for metal
05:03 PM _unreal_: better example https://lh3.googleusercontent.com/proxy/tmP8tCrsZAmGK1nxfPBORzEHOdEBnvd8x95DPsXjScoGESoAGVPF6mnqQwS357717RSZIcSzyBYVn8d-jWo2h7piAIAVV7gvo2aIAzX1LCezP6Y_s0qzAIkPKRg
05:03 PM syyl: i would love to see the bearing-arrangement in that flange
05:04 PM _unreal_: syyl, you can see it
05:04 PM gregcnc: plain old radial bearings, if lucky preloaded, but a proper bearing system could be desinged
05:04 PM syyl: well, i see *one* bearing, _unreal_
05:05 PM syyl: you mean, thats it?
05:05 PM XXCoder: unreal huh??
05:05 PM XXCoder: those are spindles?
05:05 PM _unreal_: XXCoder, yes
05:05 PM _unreal_: very compact
05:05 PM gregcnc: they replace the origninal motor shaft with a collet holder
05:06 PM XXCoder: whats rpm range and strength? ie can it cut alum and such
05:06 PM _unreal_: XXCoder, those motors come in diffeent powers
05:06 PM _unreal_: high k or low k
05:06 PM XXCoder: what is k unit of?
05:06 PM _unreal_: the lower the rnage the lower the RPM higher the torque
05:07 PM gregcnc: power and speed not really an issue, tiny bearing size is
05:07 PM XXCoder: ahh yeah that tend to be the case
05:07 PM XXCoder: (torque vs rpm)
05:07 PM gregcnc: plenty of power for the tools that fit
05:08 PM _unreal_: https://youtu.be/uLutMoh4Ttg
05:08 PM syyl: distance from the tiny bearing to the end of the collet chuck
05:08 PM syyl: hmm
05:08 PM gregcnc: yeah
05:08 PM syyl: soft materials work probably fine
05:08 PM _unreal_: k is the RPM per volt
05:08 PM syyl: as in soft cheese, wood and plastics
05:08 PM gregcnc: kV
05:09 PM gregcnc: I have considered getting proper RC based spindle made in China. I have the right connections
05:09 PM gregcnc: I just don't think there would be much market compared to the price of the cheap china spidles that exist now
05:10 PM XXCoder: 43mm one might be popular if can be powerful type
05:10 PM XXCoder: isnt they all DC which have issues?
05:10 PM gregcnc: what issues?
05:11 PM XXCoder: rpm vs torque
05:11 PM gregcnc: far better than AC
05:11 PM XXCoder: hmm i remembered the reverse. does it means common chineseium spindles is ac?
05:11 PM gregcnc: yes
05:11 PM _unreal_: gregcnc, they are all brushless
05:11 PM _unreal_: low KV motors have super high torque
05:12 PM gregcnc: I could teach you about motors
05:12 PM XXCoder: so... cheap dc 52mm and 43mm spindles would be popular!
05:12 PM gregcnc: i was involved in the first good chinese RC brushless sold in the US
05:13 PM _unreal_: XXCoder, its like any other motor though they are only good for a "range" when it comes to speed/power
05:13 PM _unreal_: you can get motors that are tuned to the range you need
05:14 PM XXCoder: big ones have such wide range :( I tested 1 rpm on one of machines and it works fine but very strong
05:14 PM XXCoder: unreal sure but tend to have only one choice if want cheaper
05:14 PM XXCoder: it tend to be ~24k rpm
05:14 PM _unreal_: ?
05:14 PM _unreal_: XXCoder, no the motors are all over the place range wise
05:14 PM XXCoder: in least it was the case when i was working on router
05:14 PM _unreal_: high kv low kv, size of the motor
05:14 PM _unreal_: wattage range
05:15 PM _unreal_: etc...
05:15 PM gregcnc: quality
05:15 PM _unreal_: with out saying
05:15 PM XXCoder: yeah. though more varied ones is at least 56mm
05:15 PM _unreal_: and they have come WAY down in price
05:15 PM unterhaus: I probably have only bad Chinese RC motors
05:15 PM _unreal_: heh
05:15 PM _unreal_: I build quad copters
05:15 PM _unreal_: and thats all they run on
05:16 PM _unreal_: hobbyking.com is a great source
05:16 PM XXCoder: for small machines only have 52mm. 43mm theres ONLY one when I was looking, thats why I upgraded mine to 52mm spindle holder
05:16 PM _unreal_: I've given them THOUSANDS
05:16 PM gregcnc: stuff these days is pretty decent. 15 years ago, they were junk
05:16 PM unterhaus: I was reading some of my old posts on rcgroups and I realized I used to understand motor sizing a lot better
05:16 PM _unreal_: eheheh
05:16 PM _unreal_: unterhaus, agreed
05:17 PM _unreal_: https://drive.google.com/open?id=0B3vL4RqyNgQAcW05dWktU2JoWjQ
05:17 PM unterhaus: I put the wrong prop on one of my planes and decided to research it. Found a post I made that explained why I had the problem
05:17 PM _unreal_: unterhaus,
05:17 PM XXCoder: gregcnc: i was wondering if can use stepper for spindle, using some kind of bearing setup (stepper drives it by gearing and belt not directly act as spindle)
05:17 PM gregcnc: for your psindle you need to look at expected cutting loads and torque and go from there
05:17 PM _unreal_: XXCoder, sure its called a bldc
05:17 PM gregcnc: you could, but I wouldn't
05:18 PM gregcnc: stepper in not the same as BLDC
05:18 PM _unreal_: "steppers" have too high of a step rate
05:18 PM XXCoder: bldc servo
05:18 PM _unreal_: gregcnc, a stepper and bldc by design are 99% the same
05:18 PM XXCoder: reading about it now
05:18 PM gregcnc: sure
05:18 PM _unreal_: the wiring is different a little but thats about it
05:19 PM XXCoder: https://capolight.wordpress.com/2017/07/30/stepper-motors-or-a-bldc-servo-motors-which-is-better-and-when-to-use-them/
05:19 PM gregcnc: yeah it's a motor
05:19 PM gregcnc: they are all teh smae
05:19 PM _unreal_: XXCoder, bldc is much better for speed
05:19 PM gregcnc: once you know what your requirements are you can choose a motor and bearings
05:20 PM XXCoder: mines nearly all wood. but I want some alum also
05:20 PM _unreal_: a bldc will take MORE power if your using an encoder to drive a bldc. I would suggest gearing a BLDC way down in that case
05:20 PM gregcnc: I very small motor at high speed will need water cooling
05:20 PM XXCoder: my spindle can do it but its range is quite high rpm which means I have to do feed high or work around
05:21 PM _unreal_: gregcnc, exactly. Thas why I want to build a high power rc brushless that I dont have to worry about it
05:21 PM gregcnc: still need liquid cooling
05:21 PM gregcnc: mine is cooled
05:22 PM _unreal_: gregcnc, my main issue is that I cant find a SMALLL china spindle that is high power
05:22 PM _unreal_: they are all too long
05:22 PM _unreal_: I need a spindle that is 6" max including collet
05:23 PM _unreal_: I have a micro spindle on my small machine works great but the shaft will flex if under load
05:24 PM XXCoder: just had weird idea
05:24 PM XXCoder: use rc motors as micro cnc machine spindle
05:24 PM * _unreal_ palm to face
05:24 PM XXCoder: :D
05:24 PM _unreal_: XXCoder, https://external-preview.redd.it/kfRlBHJibZEUvfvMHehCX3e0draePekwOs92WYWrlFI.jpg?auto=webp&s=4f86ab730a48abd5015fd505eb8e78de9363f6ae
05:25 PM gregcnc: I could build my design to be almost half the length
05:25 PM _unreal_: https://i.ytimg.com/vi/eZ3BzL82qNg/maxresdefault.jpg
05:25 PM XXCoder: unreal from what I see in scale, smallest is around bit over inch
05:25 PM XXCoder: (motor diameter not rest of it)
05:25 PM _unreal_: ya
05:26 PM _unreal_: but those motors MUST run high rpm or they will over heat
05:26 PM XXCoder: those would be perfect for engraving
05:26 PM _unreal_: ya
05:26 PM _unreal_: 2800kv one's ya running 24v GOOD GOD
05:27 PM _unreal_: 24x2800kv
05:27 PM _unreal_: thats 67,200RPM no load
05:28 PM unterhaus: XXCoder, have a batch of rc motors with a tiny endmill pecking away
05:28 PM _unreal_: as I said what I'm asying is thats the perfect design for a 5 axis
05:28 PM XXCoder: unreal lol my machine first spindle was shit chineseium edge trimmer
05:28 PM unterhaus: I was remotely involved in a project like that with micro edm
05:28 PM gregcnc: if you say so
05:28 PM XXCoder: 27k rpm
05:28 PM _unreal_: especially if milling soft materials
05:29 PM _unreal_: full 3d
05:29 PM XXCoder: its bearing was super shit and its way out on runout
05:29 PM XXCoder: so I threw it out
05:29 PM unterhaus: mount the rc milling heads on tiny quadcopters. No axis motion involved at all
05:29 PM gregcnc: balancing a spindle to that speed isn't trivial either
05:29 PM XXCoder: I'd say runout was around .006" or so lol
05:30 PM _unreal_: gregcnc, those RPMs would only be good for 1/8th bits
05:30 PM _unreal_: imo
05:30 PM XXCoder: chineseium spindle in comprasion ran smoothly (tiny vibration) and runout of roughly .001"
05:30 PM gregcnc: they are good for what you design them for
05:31 PM _unreal_: gregcnc, that speed would be amazing for PCBs
05:31 PM unterhaus: the air bearing chuck I balanced had set screws for balancing. Move them in or out.
05:32 PM XXCoder: nice
05:32 PM gregcnc: that's common
05:33 PM gregcnc: what did you balance it on?
05:33 PM unterhaus: it was on a nanaotech
05:33 PM unterhaus: lathe
05:34 PM gregcnc: what tool did you balance it with
05:35 PM unterhaus: accelerator and a digital filter
05:36 PM unterhaus: I just found a video of me talking about spindle metrology :)
05:37 PM unterhaus: send the filtered signal into an oscilloscope. Not the best method, I'll admit
05:38 PM gregcnc: just guess onthe angle?
05:39 PM unterhaus: it has been a while, I'm trying to remember. I think I could get the index pulse off the spindle
05:39 PM gregcnc: sure something otherwise you don't know the location
05:40 PM unterhaus: the math method relies on you putting a big weight on one side and then removing it
05:41 PM unterhaus: a tech from a client company came and didn't like the sound of my balancing method
05:41 PM unterhaus: so he used a balancing computer and made it worse. But he was happy
05:43 PM unterhaus: I learned later I was probably balancing near a resonance, I noticed I could get a 180 phase change and it didn't occur to me why it was happening
05:44 PM gregcnc: hard bearing soft bearing overhung etc., makes a difference
05:44 PM unterhaus: I'm glad nobody asked for the link to me talking about spindle metrology before I closed the window
05:44 PM gregcnc: above below critical speed
05:48 PM unterhaus: I think critical speed and resonance are two ways of describing the same phenomenon
05:48 PM CaptHindsight: acceleromometers
05:49 PM unterhaus: that's how they spelled it on the power rangers
05:49 PM unterhaus: my favorite power ranger moment was when one of them called a thermometer a thermo-meter and they just left it in
05:50 PM CaptHindsight: adds spice to life
05:53 PM unterhaus: the views on this diamond turning video continue to climb. we found out somebody ripped it off https://www.youtube.com/watch?v=vAvfrrlMZg4
05:54 PM unterhaus: the ripoff cuts it off just before you can see Ted's face in the copper at the end
05:55 PM gregcnc: YT easily finds copies now, but it's still your responsibility to claim them
05:56 PM XXCoder: unterhaus: is tjhat link to ripped off version or orginial?
05:57 PM unterhaus: that's the original
05:57 PM XXCoder: man thats like mirror
05:57 PM unterhaus: Ted made some videos with my high speed camera that were pretty neat
05:58 PM unterhaus: the department keeps using the picture with someone's face reflected in one of those turnings. It looks like he has a hole in his head
05:59 PM CaptHindsight: https://www.youtube.com/watch?v=cazT_-kNRBU 400w spindle review mounted on an Ultimaker platform
06:00 PM XXCoder: MPCNC
06:01 PM XXCoder: thats that design and project called
06:01 PM XXCoder: "mostly printed cnc"
06:01 PM CaptHindsight: XXCoder: we were talking about MPCNC earlier
06:01 PM XXCoder: ahh ok :)
06:01 PM CaptHindsight: earlier party today
06:02 PM CaptHindsight: pretty much take any chinese spindle, take it apart replace the bearings, regrind the shaft, derate by 50%, done!
06:02 PM XXCoder: :) essentally
06:03 PM XXCoder: depends on what want to do
06:03 PM XXCoder: if wood it dont really matter
06:03 PM CaptHindsight: Chinese watts are closer to dream watts
06:03 PM unterhaus: I swear I had more videos on my channel. I know one of them wasn't public
06:03 PM CaptHindsight: 2x what physicists use as a Watt
06:03 PM XXCoder: youre being generious
06:04 PM XXCoder: its more like cw = 0.2w
06:04 PM CaptHindsight: for audio
06:04 PM gregcnc: https://www.ebay.com/itm/263901192689
06:04 PM sync: they are just wound to reach max power at max rpm
06:04 PM CaptHindsight: 1000W audi amp that fits in your hand
06:04 PM sync: but apart from that they meet their spec
06:05 PM XXCoder: that pretty damn high rpm
06:05 PM CaptHindsight: only ER8 I need Cat40
06:06 PM XXCoder: cat40 thats pretty beefy
06:09 PM gregcnc: https://www.ebay.com/itm/153815227271
06:10 PM XXCoder: smallest toolchanger spindle I ever used, you could hide toolholder in hand, with tool sticking out
06:11 PM _unreal_: I'm designing my Y motor mount/tensioner right now
06:12 PM _unreal_: 6.35
06:12 PM _unreal_: ? this isnt my cad keyboard
06:34 PM _unreal_: so quiet
06:34 PM jthornton: dammit back to the same issue with python-vlc first audio file plays then the second one loads but no sound... I give up
06:34 PM _unreal_: ?
06:35 PM _unreal_: XXCoder, https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DWWfh7kdDhU0&psig=AOvVaw1Ww5I6qa5ZQiNevTDcIm9Q&ust=1581288868025000&source=images&cd=vfe&ved=0CA0QjhxqFwoTCIC4-beLw-cCFQAAAAAdAAAAABAm
06:43 PM XXCoder: such ugly url for youtube lol
06:44 PM XXCoder: looking
06:44 PM XXCoder: thats cool. too much camera shaking though, its barely watchable
06:48 PM skunkworks: all our mills have brushless motors... :)
06:48 PM XXCoder: you plan to use one for your kid cnc machine?>
06:58 PM Rab: haha @ SLA battery
06:59 PM XXCoder: sla battery?
07:01 PM Rab: Powering the spindle in the video.
07:01 PM XXCoder: ahh ok. it wasnt captioned so i dont know what was being spoken
07:02 PM Rab: Nothing was spoken, I see it at 17 sec.
07:07 PM XXCoder: oh
07:07 PM XXCoder: the small block thingy?
07:10 PM _unreal_: XXCoder, EXATLY
07:10 PM _unreal_: when she shows me that she's ready
07:10 PM XXCoder: nice :)
07:10 PM _unreal_: I have to get it running first
07:10 PM _unreal_: I only need to finish the wires, I've just been busy and lazy
07:10 PM _unreal_: :)
07:11 PM _unreal_: You would agree though perfect choice?
07:11 PM XXCoder: i'd say so. how much is those tiny spindle tho?
07:12 PM _unreal_: they are all DIY
07:12 PM _unreal_: so far as I can tell
07:12 PM XXCoder: oh hmm'
07:12 PM _unreal_: its just an rc brushles, with a custom body to hold the bearings
07:12 PM _unreal_: and an ESC
07:12 PM _unreal_: they run on 12-24v depending on design
07:13 PM _unreal_: 3s-6s
07:13 PM _unreal_: I know RC hadware really well, hence all jthornton's questions to me about the drone stuf
07:14 PM _unreal_: Id love to get a 650-750KV motor setup as a spindle for my new build
07:16 PM _unreal_: XXCoder, look at this https://3dprintingindustry.com/news/5axisworks-brings-low-cost-5-axis-milling-3d-printing-machine-kickstarter-33406/
07:16 PM _unreal_: ultra compact
07:16 PM XXCoder: i remember that onbe
07:17 PM _unreal_: That is my goal with this machine
07:18 PM _unreal_: my build is WAY more rigid then that bild
07:24 PM _unreal_: kills me not having a lathe
07:25 PM XXCoder: i bet
07:36 PM CaptHindsight: I had an idea for a drones way back in the 70's
07:36 PM _unreal_: I'm trying to find a round belt like this
07:36 PM _unreal_: https://www.amazon.com/Sanitaire-Upright-designed-Uprights-brushroll/dp/B008MKKRIK
07:36 PM _unreal_: that is 17"
07:36 PM CaptHindsight: they were modeled after WWII military aircraft
07:37 PM CaptHindsight: nitromethane fule engine, radio controlled
07:37 PM CaptHindsight: fule even
07:37 PM _unreal_: fule?
07:37 PM _unreal_: What is fule?
07:37 PM CaptHindsight: fuel spelled sideways
07:37 PM _unreal_: ahhhh.
07:40 PM X704 is now known as tiwake
07:40 PM CaptHindsight: when did an electric powered RC quadcopter become a drone?
07:40 PM CaptHindsight: I guess EPRDQC was too hard to pronounce
07:43 PM CaptHindsight: https://www.youtube.com/watch?v=Vn0BAP6kdDE Runaway (1984) Trailer
07:47 PM tris- is now known as tris
09:26 PM veegee: When the chinese started making it more accessible to the dumbass general public
09:29 PM _unreal_: ?
09:50 PM _unreal_: there I'm more or less done building my design for my Y motor mount
10:15 PM daveland: Been playing with an AMD AM3 socket HP motherboard with onboard video and Phenom X2 2.8Ghz .. latency worst case so far 13us. Mobo cost $13 cpu cost $5
10:15 PM daveland: shipped
10:16 PM skunkworks: Nice!
10:16 PM daveland: they are selling the entire box for $60 -$100 on amazon and ebay .. if you want the case and windows7
10:18 PM daveland: only bad point is Powersupply is non standard..so I got mine for $5 shipped.... but still not bad.. if the latency holds up once I get it all together.
10:18 PM daveland: I bought 4 so I can do the CNC mill and the Router.. and use the other 2 for 3D printer servers and spares
10:19 PM daveland: They are 9 years old.... 2009 vintage... but still going strong. they must be making better Caps now
10:20 PM skunkworks: I have had similar luck with hp 8300 sff
10:20 PM skunkworks: and about the same price
10:20 PM daveland: this is 6005 pro sff
10:20 PM daveland: with onboard dadeon 4200 ??? graphics
10:20 PM daveland: radeon
10:21 PM daveland: had to iosolcpu on one core and used Stretch ( rt_preempt)
10:22 PM skunkworks: same
10:22 PM daveland: But it was not a big hassel... Is the 8300 intel or AMD ?
10:23 PM skunkworks: http://www.electronicsam.com/images/KandT/testing/8300/Screenshot_2019-04-26_17-53-42.png
10:23 PM skunkworks: i5
10:23 PM daveland: very nice... im about twice that
10:24 PM fjungclaus1 is now known as fjungclaus
10:24 PM daveland: ahh I5 3470 .. comparable...
10:25 PM skunkworks: ether way - very good for even software generation
10:25 PM daveland: I bougth 2 smaller intel SSD's 80GB and 180GB for like $15 each. they work great... and older is not MLC so should last longer
10:30 PM daveland: working on Pluto-p stepping.. got it complied.. now trying to fix follow error... seems plutop has been kind of abandon