#linuxcnc Logs
Nov 20 2017
#linuxcnc Calendar
12:02 AM monkeyisl: i've seen a mahcine running mach3. and i started to clone+ upgrade it with lcnc from scartch.. cad done lm , stepper, spindle are lready.
12:05 AM monkeyisl: so idon't know what i'm doing
12:05 AM XXCoder: ATC is way harder than cnc itself
12:05 AM monkeyisl: somebody said "mach3 sucks, lcnc rules" when i came here. so i 've decided lcnc... heh..
12:05 AM monkeyisl: xxcoder : yup.
12:05 AM monkeyisl: i'm not desgining it i probably buy something already done.
12:05 AM XXCoder: that was me ;) and probably nearly everyone else here
12:05 AM monkeyisl: oh right :D
12:05 AM monkeyisl: btw i don't actaully know the difference. heh
12:06 AM monkeyisl: hopefully i'll expereince soon
12:11 AM monkeyisl: btw lcnc frontend looks nicer
12:11 AM monkeyisl: xxcoder : you git clonced lcnc?
12:11 AM XXCoder: nah I just used linuxcnc distro image install done
12:11 AM XXCoder: I used 8 gb ssd
12:12 AM monkeyisl: lol cool
12:12 AM monkeyisl: i found 128gb ancient ssd so i'm using it
12:13 AM XXCoder: its also super cheap lol
12:18 AM CaptHindsight: monkeyisl: https://www.automationtechnologiesinc.com/products-page/cnc-spindle/kl-2200atc/
12:18 AM monkeyisl: clickinggggg
12:22 AM CaptHindsight: https://www.ebay.com/itm/NSK-Nakanishi-NR-5041E-ATC-Spindle-40-000rpm-New-complete-w-accys-unused/272920297941
12:23 AM CaptHindsight: that 2nd one might just have ATC as a part number
12:23 AM CaptHindsight: it looks like it has a manual/threaded shaft for a nut
12:25 AM CaptHindsight: it has a pneumatic fitting https://www.ebay.com/itm/NIB-NSK-Nakanishi-NR40-5100-ATC-Spindle-50-000rpm/322868244922
12:26 AM CaptHindsight: https://www.youtube.com/watch?v=SqXCXX3WY9E
12:27 AM CaptHindsight: tiny ATC
12:27 AM CaptHindsight: http://www.nskamericacorp.com/product/detail/nr40-5100 atc
12:28 AM CaptHindsight: 1/8" collet
01:03 AM IchGucksLive: morning
01:12 AM gloops: hi
01:20 AM XXCoder: hey
01:21 AM XXCoder: CaptHindsight: ATC means spindle have something change tool with holder hold and release? or does it also require system to swap tools also?
01:21 AM XXCoder: not too sure what range ATC covers
01:22 AM CaptHindsight: a chuck that operates with air, hydraulics or solenoids qualifies
01:23 AM CaptHindsight: an arm and tool carousel is icing on the cake
01:23 AM XXCoder: so ATC can be used with hand just automated grab hold and relese?
01:23 AM CaptHindsight: yeah
01:23 AM XXCoder: okay so I understand scope more. thanks
01:24 AM CaptHindsight: lots of folks modify the drawbars on BP's to operate with air
01:25 AM XXCoder: would love to have atc on mine heh. dont have to set tool length again and again and..
01:27 AM CaptHindsight: https://www.ebay.com/i/262974322178
01:28 AM XXCoder: interesting
01:41 AM IchGucksLive: the KRESS got also a noce ATC
01:41 AM IchGucksLive: Nice
01:42 AM IchGucksLive: im off
01:42 AM IchGucksLive: Later
01:44 AM gloops: well, todays little challenge, box section frame 1500x1350mm square and flat to within a mm or two
01:51 AM XXCoder: gloops: https://www.youtube.com/watch?v=docu7RM4Tm0
01:51 AM XXCoder: there is cheaper but yeah you could learn cnc stuff with that lol
01:51 AM XXCoder: just dont expect fancy cutting
01:52 AM gloops: very poor design
01:53 AM XXCoder: it is. great intro to cnc tho
01:53 AM gloops: well i suppose yeah
01:53 AM gloops: there are some on ebay for little more than £100
01:54 AM XXCoder: yeah. break it whatever
01:54 AM XXCoder: later can do upgrades like myfordboy did
01:54 AM gloops: im building a british bulldog of a machine
01:55 AM archivist: brick built shit house version
01:55 AM XXCoder: brick built lol
01:56 AM XXCoder: someone made a 4 axis machine with lego.
01:56 AM gloops: im not sure these are a good intro to cnc, they might be a good intro to cnc as a concept, getting familiar with cartesian dimensionality and software and so on
01:56 AM archivist: a term used for over engineered
01:56 AM XXCoder: gloops: exactly thats when risk of impact or damage is highest
01:57 AM XXCoder: hell tutorial may well be to build another one of those or better design lol
01:57 AM gloops: ive seen a few people on facebook buy similar things and within days theyre back - anyone know a better machine for £1500
01:59 AM XXCoder: with some backlash fixes that machine may be actually ok prototype machine for pcbs
01:59 AM XXCoder: besides that only use I can forsee is tutorials
02:00 AM Deejay: moin
02:01 AM XXCoder: gloops: or real cool machinist/engineering job
02:01 AM XXCoder: "final interview part: build this part with given stuff"
02:02 AM XXCoder: stuff is miscalubrated caliper, gauge of one size, this machine unbuilt and some tools to build it, couple stock
02:03 AM gloops: watch as the man turns the screw to move the y axis - you can see the z flexing
02:03 AM gloops: z flex = death
02:05 AM archivist: z/any
02:06 AM gloops: well any yes, y flex is usually manifest in z movement
02:07 AM gloops: the unsupported rails although short are inadequate, the cutter is hopelessly forward of the anchor point of the gantry, considerable leverage in play
02:08 AM XXCoder: yeah figured it to be fairly bad design just didnt have words
02:09 AM gloops: maybe ok for engraving slowly
02:11 AM XXCoder: yeah
02:11 AM XXCoder: pcbs
02:11 AM archivist: we had one in here show his gantry which looked like an old gate
02:11 AM gloops: lol
02:11 AM archivist: should have saved that image
02:12 AM gloops: well scrap metal is just as strong as new metal
02:12 AM XXCoder: lol I saw guy made big cnc router'
02:12 AM XXCoder: it was made from lots "boxes" of wood
02:12 AM XXCoder: very strong
02:12 AM XXCoder: gantry was boxed also
02:13 AM XXCoder: my orginial plan was to build something like that
02:13 AM archivist: dj has a wooden one
02:13 AM gloops: my first go i just went by instinct, this will never bend, that is plenty strong enough, - but it did bend, i was pretty amazed 2.5 inch heavy pipe could bend from routing wood
02:14 AM archivist: flex is always there, it is just the amount that varies
02:14 AM XXCoder: should have rubber hose fit inside then smaller hose in such way that thers no gap
02:14 AM XXCoder: much more stiff but yeah still flex
02:14 AM gloops: archivist said - shape trumps material - which is true, and its also true that design trumps strength of material
02:15 AM gloops: you can use much lighter sections if you consider the moment effect - force applied at a distance
02:15 AM gloops: 2 inch wider footprint for bearings is better than 1mm thicker box section
02:16 AM XXCoder: I couldnt find those pics of machine
02:16 AM XXCoder: but imange this https://i.pinimg.com/236x/f4/0a/ee/f40aee81ed5306d751416ed8a1736f7d--storage-crates-wood-working.jpg
02:16 AM gloops: i can stand on this box section and it doesnt move - different story if i stand on a 2ft lever under it
02:16 AM XXCoder: whiole bed has that boxed style as bed
02:16 AM XXCoder: *cnc router
02:16 AM archivist: it is not just the rotation from a distance, it is shear, tortional twist etc
02:17 AM XXCoder: and gantry is made from boxes also, all around
02:17 AM gloops: wood boxes are strong, very strong
02:17 AM archivist: gloops you cannot feel 10 thou by standing on something
02:18 AM gloops: archivist no thats true, of course the box section is bending, but by amounts within the parameters i need
02:18 AM gloops: the floor is bending when we walk on it
02:19 AM archivist: I have problems with floor moving with my levels
02:20 AM archivist: was awkward when I built the 5 axis at the clockworks, the floor there spanned about 20 ft
02:21 AM gloops: those are strong shapes XXCoder, especially if the back is one sheet of wood, braced all round, you would never bend that plywood along the flat
02:21 AM archivist: he had dug under the floor and built a basement
02:21 AM gloops: columns or pillar - pit props
02:22 AM XXCoder: interesting
02:22 AM archivist: while I was there I jacked up the wall next to me by over an inch
02:22 AM XXCoder: or jacked floor down a inch? heh
02:22 AM gloops: lol
02:23 AM gloops: i was once accused of lifting an upper storey bay window by 2 inch - bloke said before when he was laid in bed he could see the lighthouse, now he couldnt lol
02:23 AM archivist: the supporting wall at the side was sinking into the clay, put a pillar under the wall
02:24 AM archivist: bay windows do sag
02:24 AM XXCoder: gloops: reprap cnc router design lol https://www.ebay.com/itm/292301284548?rmvSB=true
02:24 AM gloops: it was built into the roof, would mean we'd lifted the roof 2 inch
02:24 AM archivist: replacing them is a problem for the double glazing industry
02:25 AM archivist: ew half plastic router
02:26 AM XXCoder: like I said, reprap cnc rputer lol
02:26 AM archivist: spell that correctly repcrap
02:26 AM XXCoder: lol
02:27 AM XXCoder: gloops: what I like about homofaciens is he shows all stuff and issues like backlash
02:27 AM gloops: https://www.ebay.com/itm/3040-cnc-router-1-5KW-spindle-USB-port-100MM-Z-axis-engraving-machine-desktop/221424961059?
02:27 AM gloops: big price jump for something more substantial
02:28 AM XXCoder: thts somewhat better than mine
02:28 AM XXCoder: spindle is lot more powerful than mine
02:28 AM XXCoder: 400w to 1.5kw
02:28 AM gloops: 1.5kw - probably overpowered
02:29 AM XXCoder: one you linked is likely able to mill alum
02:29 AM gloops: really doubt the machine could get anywhere near stalling that
02:29 AM XXCoder: not too deep and hard but yeah
02:30 AM gloops: yours will mill ally, slowly
02:30 AM gloops: use yours to make the other one
02:31 AM XXCoder: lol what my plan is to make large wood router, whenever has shop. which is futher off now what with water issues here :(
02:31 AM XXCoder: basement is getting wetter and wetter, unknown source
02:31 AM XXCoder: tomorrow someone comes to rip off floor and some walls
02:32 AM gloops: someone is making an 8x4 on facebook with wood, have to see how he goes
02:36 AM archivist: found it http://www.delorie.com/photos/cnc/img_2605.html
02:36 AM XXCoder: nice
02:36 AM XXCoder: 3 psu 3 of what looks like tb6600s
02:38 AM archivist: he made his own drivers not tb6xxx
02:39 AM XXCoder: http://www.delorie.com/photos/cnc/img_2523.html
02:52 AM gloops: some thought gone into that
02:55 AM gloops: with wood its easy to think that things will be misaligned owing to the wood not being precision surfaced etc, but its consistently out of alignment, the cutter always travels the distance dictates by the screw thread
02:56 AM archivist: you should mill the top surface so it is correct
02:57 AM XXCoder: yeah mtmwood discovered that with his new cnc router lol
02:57 AM gloops: so long as your bearing rails are right
02:59 AM gloops: if the z isnt vertical for e.g, x position at z0 is different to x position at z 100
02:59 AM gloops: those kind of things matter
03:00 AM archivist: a level and some adjustment
03:01 AM gloops: set something upright dead sqaure to the bed - run a dial up and down it
03:02 AM gloops: if no dial, a scribe point or something, anything
04:00 AM monkeyisl: how could i add touch screen?
04:01 AM monkeyisl: do i need to install driver? or it works like usb mouse?
04:03 AM sync: It depends
04:04 AM archivist: some googling for the screen you have
04:06 AM monkeyisl: i don't have screen yet.
04:06 AM monkeyisl: what ppl use for the screen?
04:07 AM monkeyisl: i know it depends. right
04:08 AM archivist: I dont have a touch screen
04:09 AM archivist: I did go searching and had an ELO type which was rs232
04:13 AM monkeyisl: thank you. ..
04:17 AM archivist: I think touch screen is ok for a cam user but for me developing gcode on the machine it is not for me
04:43 AM jthornton: morning\
04:44 AM XXCoder: yo
04:54 AM jthornton: crap forgot to take the hose off the spigot
04:54 AM XXCoder: doh
04:58 AM jthornton: 26F at the moment
04:59 AM XXCoder: dang
05:30 AM monkeyisl: https://www.aliexpress.com/item/21-5-Inch-Resistive-Touch-Screen-Panel-490mmx285mm-4-Wire-USB-Kit-for-21-5-Monitor/32810108959.html?spm=2114.search0104.3.194.iyl5bI&ws_ab_test=searchweb0_0,searchweb201602_4_10152_10065_10151_10344_10068_10345_10342_10343_10340_10341_10541_10562_10084_10083_10307_10175_10060_10155_10154_10539_10312_10059_10313_10314_10534_10533_100031_10103_10073_10594_10557
05:30 AM monkeyisl: _10596_10595_10142_10107,searchweb201603_25,ppcSwitch_2&btsid=ddb08855-b794-4552-b8a3-ff58e76e6365&algo_expid=cdb50fbf-5a77-42f6-ac93-10739d8edf96-22&algo_pvid=cdb50fbf-5a77-42f6-ac93-10739d8edf96&rmStoreLevelAB=0
05:30 AM monkeyisl: bouhgt this.. from china.
05:31 AM monkeyisl: it has both usb,rs232 so i'll be safe.
05:32 AM jthornton: when you paste links like that everything after .html can be removed
05:34 AM monkeyisl: oh i see.
05:34 AM monkeyisl: ill shorten it.
05:34 AM monkeyisl: https://imgur.com/a/bbjRe <-- 80usd inc shipping. from china LOL.
05:36 AM monkeyisl: but it will take forever.
05:40 AM monkeyisl: if you guys have to have 2 buttons, what should them be?
05:40 AM monkeyisl: i can think emegency stop as one of.
05:40 AM XXCoder: e-stop and start
05:41 AM XXCoder: honestly I'd add pause
05:41 AM XXCoder: very handy, that
05:41 AM monkeyisl: paus..e..
05:41 AM monkeyisl: i thinksoo.
05:41 AM monkeyisl: estop will have no rollback right?
05:41 AM monkeyisl: eletrically OFF.
05:42 AM XXCoder: you can set program to start from whatever but yeah program stops, machine loses its XYZ location (assuming no encoder and such)
05:42 AM XXCoder: power off not nesscarly
05:42 AM XXCoder: theres setups where e-stops force all steppers into full hold
05:43 AM XXCoder: and turn off spindle
05:43 AM XXCoder: since that has zero cpu overhead you can stop it even with computer crashed
05:45 AM monkeyisl: hm... but i don't trash myself. so i'd better eletricallly off all steppers and spindle with estop.. or i'll just amke it power button
05:45 AM monkeyisl: so estop just off everything but pc.
05:46 AM XXCoder: turning steppers off may be bad mobe
05:46 AM XXCoder: better to just send 12v to all pairs so it cant move
05:46 AM monkeyisl: i don't trush chinkaldn steppr driver and VFD
05:47 AM XXCoder: huh
05:47 AM XXCoder: didn't I say that e-stop bypasses everything?
05:47 AM XXCoder: it dont need functional driver or computer to stop steppers
05:50 AM monkeyisl: my stepper driver asks AC to power up it has built-in AC-DC....
05:50 AM XXCoder: e-stop dont use stepper driver
05:50 AM monkeyisl: how is then it is emegency stop
05:50 AM XXCoder: e-step has power cutoff and power supply
05:50 AM monkeyisl: right
05:50 AM XXCoder: well sometimes its better to keep something powered
05:50 AM monkeyisl: that's what i mean though..
05:51 AM monkeyisl: ahh..
05:51 AM XXCoder: some machines z will fall down without power
05:51 AM monkeyisl: so there is pause
05:51 AM monkeyisl: ahh
05:51 AM monkeyisl: ahh rightright
05:51 AM XXCoder: which is Bad Thing (tm)
05:51 AM XXCoder: so yeah thats why e-stop has 2 wirings
05:51 AM XXCoder: one to cut off, and one to supply
05:52 AM XXCoder: in case of steppers you could supply say 12v (assuming drivers use 12v also) to one wire of each stepper pair
05:52 AM XXCoder: so steppers cant move reardless what computer commands it to
05:53 AM * archivist whacks XXCoder for that connecting to a random wire
05:54 AM XXCoder: wsell yeah whatever hot not grounded
05:54 AM XXCoder: sorry heh
05:54 AM XXCoder: I didnt say random but I didnt specify which also
05:54 AM monkeyisl: my ... my z thread is like 4mm.. so.. it won't instanlly drops.. it will stuck there for a long time even i off competely..
05:55 AM monkeyisl: -s
05:55 AM XXCoder: yeah it dont apply to all machines. not too sure when exactly its better to stop and when its better to cut power
05:55 AM XXCoder: spindle its safe bet to cuit
05:57 AM monkeyisl: kk
05:57 AM monkeyisl: i recall, when i'm designg 3d trash, i ended up with corexy
05:57 AM monkeyisl: 4mm was ok my bed was stuck there.
06:00 AM gloops: dont power off vfd while spindle is running - pooof
06:00 AM monkeyisl: oh..
06:00 AM monkeyisl: what aheppens?
06:00 AM archivist: back emf from motor
06:00 AM gloops: vfd smoke
06:00 AM monkeyisl: ahhh
06:00 AM monkeyisl: hmmmmmmmmmmmmm
06:00 AM monkeyisl: is there no didoe?
06:00 AM monkeyisl: or not enougenough
06:00 AM monkeyisl: big enough
06:02 AM gloops: not happened to me but the hy chinese ones do blow up, i made sure my plug fittings and wiring were secure to the vfd, im a bugger for tripping on wires and pulling plugs out
06:02 AM XXCoder: hmm how do estop stop spindle?
06:03 AM gloops: on linuxcnc
06:03 AM monkeyisl: ahh..
06:03 AM gloops: stop spindle DO NOT sever power supply
06:04 AM monkeyisl: they said back emf tested.
06:04 AM monkeyisl: @ maximum speed. 24000
06:04 AM gloops: well i dont know, im just going by reports
06:05 AM gloops: says in my manual not to do it
06:05 AM monkeyisl: 2.2k kit VFD cap is slows discharing. cuz it will generate
06:05 AM monkeyisl: ahhhh.
06:05 AM monkeyisl: OK.
06:06 AM monkeyisl: seems it's why spindle interface is isolated . .. anyway.. when i need spindle encoder interface?
06:07 AM XXCoder: tappiong
06:07 AM XXCoder: also if you want machine to know rpm
06:07 AM gloops: you get a readout on linuxcnc to set speed
06:08 AM XXCoder: any other uses for encode on stepper?
06:08 AM archivist: you wont be tapping with a high speed spindle
06:08 AM gloops: you can set the spindle speed and use spindle override or just let the g code do it
06:08 AM monkeyisl: ahhhhh...
06:08 AM XXCoder: archivist: ya doubted my machine could but wanted it for detection of issues and PID on spindle speed
06:09 AM XXCoder: it allows it to cut at lower rpm
06:09 AM gloops: i had my speed back to front heh, so when the g code set 20000 it running at like 4000
06:09 AM archivist: time I finished the encoder feedback on my spindle, made the disk
06:10 AM XXCoder: I added magnets to my spindle fan top, found out my hall sensor dont work past 200 hz bah
06:10 AM XXCoder: so got 1 khz one
06:10 AM gloops: remember with air cooled spindle time is a factor at low speed - fan not effective
06:10 AM XXCoder: havent worked on that
06:20 AM monkeyisl: found mine is 400hz. so can't do tapping am i right?..
06:20 AM XXCoder: yours is high speed spindle like mine. cant tap with that soindle
06:22 AM monkeyisl: highspeed means highfreqnuecy motor pulse right?
06:23 AM monkeyisl: or it spins fast to detect?
06:24 AM XXCoder: 24k rpm
06:24 AM XXCoder: usually it means lower speed range suckjs
06:24 AM XXCoder: taps tend to need lower rpm
06:26 AM XXCoder: not too sure on rpm range for tapping
06:26 AM XXCoder: 100 rpm?
06:26 AM monkeyisl: hmmm...
06:28 AM malcom2073: 2-3k
06:28 AM malcom2073: Is what we were rigid tapping the other week at
06:29 AM malcom2073: Though if you do incremental tapping it tends to be less than 1k
06:29 AM malcom2073: cause of speed up and slow down
06:30 AM monkeyisl: ahh servo spindle .. is for tapping
06:31 AM malcom2073: Get a tapamatic
06:31 AM malcom2073: :-D
06:32 AM jthornton: https://mesaus.com/index.php?route=product/product&path=74_78&product_id=140
06:32 AM jthornton: there is a cheap one lol
06:34 AM XXCoder: interestung lol
06:34 AM XXCoder: 1200 rpm
06:34 AM XXCoder: not surpising
06:37 AM archivist: psst anyone want to buy a tapping head.. I have one spare too, mine being a UK made one
06:38 AM archivist: jthornton, er some repetition "This is as new as a new one"
06:39 AM monkeyisl: i could just use same VFD?
06:39 AM archivist: maybe depending on spindle motor
06:40 AM XXCoder: "newer than new" means it is newer than the word "new". ;)
06:41 AM XXCoder: laters
06:58 AM JT-Shop: hose seems to be ok
07:00 AM monkeyisl: hm... i curious how mach3 can do realtime on xp?...
07:01 AM archivist: monkeyisl, see the number of complaints with the mach3 users where latency has been an issue
07:03 AM CaptHindsight: JT-Shop: ever come across https://machmotion.com/about-main custom Mach3/4 shop near you
07:07 AM monkeyisl: <jthornton> https://mesaus.com/index.php?route=product/product&path=74_78&product_id=140 <-- what VFD is recommended for those?
07:09 AM jthornton: not sure of the question, any drill press can use a tapping head or a cnc mill
07:10 AM CaptHindsight: https://en.wikipedia.org/wiki/RTX_(operating_system) has claimed latencies under what the hardware can actually perform
07:11 AM CaptHindsight: monkeyisl: ^^ but mach3/4 doesn't even use RTX
07:17 AM monkeyisl: CaptHindsight : but it works, dones' it? ..
07:17 AM monkeyisl: only for home trash 3axis?
07:17 AM CaptHindsight: almost works
07:17 AM monkeyisl: almost .. ok hah
07:19 AM CaptHindsight: I see that reasoning all the time, "but it works, the mill made with a butter knife and a used washing machine motor"
07:19 AM archivist: and the external motion boards also have issues with stuff like screw cutting
07:19 AM CaptHindsight: see it cuts metal
07:20 AM archivist: not straight but it cuts
07:20 AM CaptHindsight: but how well and how repeatably? how durable? etc
07:23 AM CaptHindsight: monkeyisl: spend a few hours reading the LCNC forums and the mail list
07:23 AM CaptHindsight: you'll see the difference
07:24 AM CaptHindsight: some people here build machines for a living
07:24 AM CaptHindsight: with decades of experience
08:02 AM gloops: https://www.ebay.co.uk/itm/Pair-of-tapping-heads-by-Chas-Taylor-of-Birmingham-Reverse-function/332448441551?
08:04 AM gloops: or another https://www.ebay.co.uk/itm/Tapmatic-Tapping-Head/222721035674?
08:05 AM archivist: the sort I have https://www.ebay.co.uk/itm/archer-tapping-head-spares-repairs/122784149599
08:06 AM archivist: the archer grips the square as well
08:15 AM jelly-home is now known as jelly
08:41 AM IchGucksLive: hi from germany
08:47 AM monkeyisl: IchGucksLive : hi, why did you recommend me mach?
08:58 AM IchGucksLive: i dont like M so i dont do that you mean someone else i even dont own a WINPC
09:30 AM IchGucksLive: till later
10:22 AM gloops: this looks like a good job https://scontent.fman2-2.fna.fbcdn.net/v/t1.0-9/23658474_1627367783968548_7437989827992579982_n.jpg?oh=99a1bd925dedd4c9a9b5e2be7ea75db1&oe=5AA7CAE8
10:24 AM gloops: but all that ally, those plates are 2ft 3/4 inch plates must be £60 apiece
10:24 AM gregcnc: just money right?
10:25 AM gloops: well, cheaper to do it right in the long run, if you want a machine build a machine
10:25 AM archivist: webs up the gantry sides, someone has a bit of clue
10:26 AM gloops: building 1 right is cheaper than builing 2 wrong then 1 right
10:26 AM archivist: but the beam across--
10:26 AM gloops: gonna be 2 beams accross, another one underneath, can see where hes drilled
10:27 AM gloops: 2 8 inch plates the full length for the X - 1500mm £s
10:28 AM gregcnc: is there a blog or forum thread?
10:29 AM gloops: c 3 ballscrews
10:29 AM gloops: it on a facebook group gregcnc
10:29 AM gloops: DIY CNC machines
10:30 AM gregcnc: I can't fault someone for spending coin to do things properly
10:31 AM gregcnc: the alternative is to wait for a super deal on a real machine if you have space etc.
10:31 AM gloops: keep saving, or see the bank manager
10:37 AM MrHindsight: would you ship someone a $80K printer without a crate, just on a pallet with stretch film wrap?
10:38 AM archivist: I think shrink wrap forces the shipper to be a bit careful because he can see the item
10:38 AM gregcnc: free fork lift holes too?
10:39 AM MrHindsight: yes and bent sheet metal
10:39 AM gregcnc: nice
10:39 AM gregcnc: archivist, not here they don't care
10:39 AM MrHindsight: and only insured for $200
10:39 AM gregcnc: not even insured?
10:39 AM gloops: my rails and screws came in polythene bags, rails bent fortunately i think the screws are not
10:40 AM gregcnc: I must overdo things when i ship
10:40 AM gloops: dont sign for it
10:40 AM gregcnc: i just don't want the hassle
10:40 AM MrHindsight: Fedex air freight overnight, must be like $6k
10:41 AM MrHindsight: gregcnc: same here, the shippers know how to give you the run around
10:41 AM gloops: it showed some covert footage inside the sorting depot on TV - they were throwing widescreen TVs onto the conveyor belt like they were paving slabs
10:42 AM SpeedEvil: Though shippers can be the problem too
10:42 AM SpeedEvil: I recieved 2*1800mm*54mm glass tubes in the post once
10:42 AM SpeedEvil: that had been posted with three layers of bubblewrap and 'fragile' tape as their sole packaging
10:42 AM gregcnc: there is abuse, but even normal shipping must be accounted for and people don't get it
10:43 AM MrHindsight: SpeedEvil: arrived as glass shards?
10:43 AM SpeedEvil: MrHindsight: more or less
10:43 AM gregcnc: it's not like picky it off the shelf and putting it into your cart and the grocery store
10:43 AM SpeedEvil: the vendor wouldn't agree with me that this was unreasonable shipping.
10:43 AM SpeedEvil: So I returned it to them in a 30cm square box, and they had to refund me
10:43 AM gregcnc: haha
10:44 AM SpeedEvil: (solar collector vacuum tubes)
10:44 AM gregcnc: what did you make?
10:45 AM gregcnc: a buddy got one of those solar tube cookers he said he likes it
10:45 AM SpeedEvil: I was going to order more of them from the same seller as they seemed to have a lot, for solar water heating
10:45 AM archivist: I got a couple of bits from ebay recently came in two huge parcels, exceedingly well packed
10:46 AM SpeedEvil: Today I learned that 2 123 blocks will fit through my letterbox, and go bang quite loudly when they hit the floor.
10:46 AM SpeedEvil: ^yesterday
10:46 AM SpeedEvil: No, saturday
10:46 AM gregcnc: I have a box arriving from DE today. with a chuck and bunch of odds, so wonder what it will look like
10:48 AM Jymmm: gregcnc: https://2ssfqk3rcvgy3dk8q79v7oyh-wpengine.netdna-ssl.com/wp-content/uploads/2016/12/Usage-of-Fragile-Stickers.jpeg
10:48 AM gregcnc: When i was shipping a lot I always though those were an invitation to some guy having a bad day
10:49 AM Jymmm: gregcnc: Then toss a bowling ball inside?
10:51 AM MrHindsight: we had a 5 gal pail that was lost for 1 month ....
10:51 AM MrHindsight: it showed up in Asia on its side with the arrows pointing sideways that said UP^^ UP^^
10:52 AM MrHindsight: everything had leaked out
10:52 AM MrHindsight: no USPS doesn't want to pay for shipping since it was not completely lost
10:53 AM MrHindsight: no/now
10:55 AM MrHindsight: UK Parcel Farce is so far the worst, they just refuse to deliver some parcels and just return them with no reason
11:04 AM gloops: i got a note from fedex (in the uk) *last attempt at delivery item will be returned to sender in 48 hours*
11:07 AM MrHindsight: no first to third notice for 30 days and then suddenly right before it gets returned
11:07 AM MrHindsight: yeah, been seeing that as well lately
11:08 AM MrHindsight: I have to keep on top of every shipment now for customers
11:08 AM MrHindsight: I let them know when there has been any delay or exception to their shipment
11:08 AM gloops: was pretty shocked haha, i phoned them straight away and there was no real concern - i think the threat to return is just to hurry you up
11:08 AM MrHindsight: otherwise they tend to end up returned after 2 months or lost forever
11:09 AM MrHindsight: you're still out the shipping fees if they get returned
11:10 AM MrHindsight: can easily be $100's for express services
11:10 AM gloops: yeah not something i wanted to risk, went to the depot same afternoon
11:13 AM hazzy: They are just trying to double their revenue by shipping each item twice
11:13 AM hazzy: :D
11:13 AM djdelorie: XXCoder: the cnc originally had one big power supply and three custom bldc controllers, but I burned out one of the controllers. At the moment it has a chinese stepper kit installed until I can fix the servos
11:14 AM djdelorie: archivist: yes, I glued wooden strips on the frame and milled them "flat" before putting the spoils board on
11:14 AM pcw_home: We had a packet of brackets from Taiwan shipped USPS, USPS tried to deliver to our business on Saturday (naturally no one there),
11:14 AM pcw_home: left no note and the package was setup to be returned , then only by chance one of our employees happened to see the package at the post office
11:14 AM pcw_home: when shipping something out.
11:15 AM * gloops decides timing pulleys are crap
11:16 AM cradek: archivist: did you always cut your own pinions or did you have a source for blanks? I'm doing a repair that needs two cut, and I have one appropriate blank (out of a grab-bag assortment I had from somewhere)
11:17 AM MrHindsight: wasn't there a story about Amazon shipping fluorescent tubes in the retail display boxes without any packing material?
11:17 AM cradek: archivist: it's a largeish 6 leaf and I have lots of the right diameter in 7, or too small in 6, bleh
11:19 AM MrHindsight: I never understood why next day overnight super service is one delivery attempt and then returned
11:19 AM MrHindsight: 2-day or more is like 3 attempts
11:27 AM IchGucksLive: hi
11:32 AM roycroft: hey folks
11:33 AM roycroft: is anyone around who is familiar with the huanyang vfds?
11:34 AM roycroft: i need to control one remotely, and without using cnc software - i just need remote switches/pot/display
11:34 AM roycroft: the switches and pot are easy, but i can't sort out from the manual if it supports a remote display or not
11:34 AM MrHindsight: part number?
11:35 AM MrHindsight: but it's written in clear Engrish :)
11:35 AM roycroft: i don't have the actual vfd i'll be using yet
11:36 AM roycroft: it's this one:
11:36 AM roycroft: https://www.amazon.com/gp/product/B00Z4ZKXP8/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
11:36 AM roycroft: and that part number doesn't correspond to huanyang part numbers
11:36 AM roycroft: what i really need is an rpm display
11:37 AM roycroft: i just can't figure out how to install a hall effect sensor on my spindle
11:37 AM roycroft: i have no problem using a tachometer that's not integrated with the vfd at all
11:37 AM MarcelineVQ: how remote? the button panel on the huanyang is a remote display, so you could extend the ribbon cable if you wanted, it also has a rpm display, though it'll probably be a guestimate based on frequency rather than real accuranyc, dunno
11:37 AM roycroft: i'll have a knob i can turn to adjust the speed
11:37 AM roycroft: that's the other question
11:38 AM roycroft: i've not extended the ribbon cable, but it looks doable
11:38 AM roycroft: less than a meter total length
11:38 AM roycroft: the one i have claims to display rpm if it's programmed correctly
11:38 AM roycroft: but i can't program it correctly
11:39 AM MarcelineVQ: mine shows rpm just fine but I've not used it under load and don't have a tach so idk if it's real rpm
11:39 AM IchGucksLive: roycroft: it may be a clone
11:39 AM roycroft: it it not a clone
11:40 AM roycroft: but it only supports motor speeds up to 9999rpm
11:40 AM roycroft: and my spindle goes up to 24,000 rpm
11:40 AM MarcelineVQ: so who rpm you uhm, make sure the motor isn't running, and set PD144 to rated speed / 10
11:40 AM MarcelineVQ: 24000 is 2400
11:41 AM roycroft: oh
11:41 AM roycroft: that's so clear in the documentation :P
11:41 AM MarcelineVQ: it doesn't say that in the manual at all, had to figure it
11:41 AM roycroft: i'll give that a go
11:41 AM roycroft: have you actually extended the ribbon cable on one?
11:41 AM MarcelineVQ: in fact it says it's 1r in the manual, but it's 10/r
11:41 AM MarcelineVQ: no
11:42 AM roycroft: everyone talks about how much noise those things generate and how everything must be shieled, and it might not work anyway
11:42 AM roycroft: if the signals to the control panel are differential then extending the cable might not be so bad
11:42 AM roycroft: it would not be a difficult experiment to give it a go
11:43 AM roycroft: and i could live with that
11:43 AM roycroft: i wouldn't even need an external speed control pot if i did that - i could use the up and down arrows on the control panel for that
11:43 AM roycroft: the only external switch i'd need is a panic button
11:44 AM MarcelineVQ: once the speed is set properly you can hit the shitft button until ROTT lights up and you should be looking at spindle rpm
11:45 AM MarcelineVQ: at the moment I use the turn knob on the front to control speed, yours may or may not have one when it arrives ehe
11:45 AM roycroft: the ones i have now have the knob on the control panel
11:45 AM roycroft: it looks like the higher power ones do not though, and use the arrow keys to adjust speed
11:46 AM MarcelineVQ: seems reasonable, dunno how long those buttons will last though
11:46 AM roycroft: another option, of course, would be for me to just calibrate the external speed control pot and not use a remote speed display at all
11:46 AM roycroft: this is, after all, for a wood router
11:47 AM roycroft: hell, i could probably get away with just adjusting by sound
11:47 AM roycroft: but since the vfd can display the numbers i think it would be nice to be able to see them
11:48 AM MarcelineVQ: yeah, let me know if the number adjusts by load, if the vfd actually updates based on emf that would be petty neat
11:49 AM roycroft: i'm getting my new vfd on wednesday
11:49 AM roycroft: i'll probably do some testing on friday
11:50 AM roycroft: assuming my coolant pump arrives on wednesday as well
11:50 AM roycroft: i've only run the spindle for a couple minutes at a time so far, with zero load, and it hasn't gotten hot
11:50 AM roycroft: but i want coolant available before i do any load tests
11:51 AM MarcelineVQ: yah, wouldn't want it to get hot anyway just to see it, who knows what lube is in there or insulator tolerance
11:51 AM roycroft: the spindle i bought claims to use german bearings
11:51 AM roycroft: i haven't disassembled it to confirm that
11:52 AM gregcnc: made in germany, china
11:52 AM roycroft: but german or japanese bearings are usually higher quality than taiwanese or chinese
11:52 AM MarcelineVQ: of course it does, it was stored in a warehouse in germany after all
11:52 AM roycroft: it runs really quietly, that much i do know for sure
11:59 AM MarcelineVQ: if you're looking to set up a seperate pot for speed check out the Basic Wiring Diagram, maybe on page 12, and PD070 settings on page 44. Pot is probably going to be AI or VI to ACM(GND)
11:59 AM roycroft: yeah, the speed control pot should be easy
11:59 AM roycroft: as well as remote off/on switches
11:59 AM roycroft: it's the display that concerns me
12:01 PM IchGucksLive: look at my video it explains exactly the vi
12:04 PM roycroft: what video?
12:04 PM MarcelineVQ: You can get a frequency read off V0 but I'm not sure if you can get the rpm read. You may be able to set one of the multi-outputs to rpm
12:06 PM IchGucksLive: roycroft: https://www.youtube.com/watch?v=xpb9JUaWl7M
12:07 PM roycroft: thanks
12:07 PM roycroft: i can't watch it right now, but i've bookmarked it for after work
12:09 PM roycroft: the other issue i have with my exiting vfds is that not oly does a braking resistor not work, it appears that if it did it would not be terribly useful
12:10 PM roycroft: it appears that the vfd wants to spin way down before dumping to the resistor
12:10 PM roycroft: such that a quick stop is impossible
12:10 PM Jymmm: Computers ar the only thing I know of that cost thousands, then only worth hundreds in 6 months or less.
12:10 PM roycroft: for this upcoming application that's not important at all - i won't even bother installing a braking resistor on that machin
12:11 PM roycroft: but i have another application where i'd really like it to stop very quickly when i hit the e-stop button (a belt grinder)
12:11 PM roycroft: is my attempt at reading the documenation completely wrong?
12:11 PM gregcnc: not all vfd have brakes, decel ramp speed/method should be configurable
12:14 PM gloops: what about this machine IchGucksLive he is using 16mm screws 1500mm https://scontent.fman2-2.fna.fbcdn.net/v/t1.0-9/23658474_1627367783968548_7437989827992579982_n.jpg?oh=99a1bd925dedd4c9a9b5e2be7ea75db1&oe=5AA7CAE8
12:14 PM roycroft: yes, i can set pd026 to decelerate instead of coast stop (declerate is the default, actually)
12:14 PM MarcelineVQ: roycroft: if there's material in contact and isn't a mechanical torque increaser that would impart interial it'll stop pretty fast when you tell it to
12:15 PM MarcelineVQ: *inertia
12:15 PM roycroft: but it appears that i set pd028 to the frequency where the braking resistor engages
12:15 PM roycroft: and the maximum setting of pd028 is 10Hz
12:15 PM roycroft: which means the spindle is almost stopped before the brake engages
12:15 PM IchGucksLive: gloops: if i go that pricy road for al Profiles i woudt use 20
12:16 PM roycroft: unless i'm misreading
12:16 PM IchGucksLive: gloops: see th Y span
12:16 PM roycroft: and i well could be - i have a very difficult time reading engrish manuals
12:16 PM IchGucksLive: and the freerun 1605
12:16 PM gloops: well they are c3 screws but yeah he has spent some money an ally
12:17 PM gloops: you dont need c3 screws for wood
12:17 PM IchGucksLive: gloops: http://www.tecwalker.com/aluprofile-baureihe10.html
12:18 PM gloops: 54 euros a metre
12:18 PM MarcelineVQ: roycroft: hard to say, it sais the inverter will drop its frequency but it doesn't say what the motor is doing at that time
12:18 PM IchGucksLive: gloops: as i know what is used at https://www.sorotec.de/shop/CNC-Portalfraesen/
12:18 PM gloops: look at the 1500mm x plates
12:19 PM gloops: his approach is - slower but sure
12:19 PM IchGucksLive: gloops: i use this http://www.tecwalker.com/profiltechnik-1307.html
12:19 PM IchGucksLive: 45x90
12:20 PM gloops: 1 section?
12:20 PM IchGucksLive: ? understanding problem
12:20 PM IchGucksLive: in the AL 4 axis
12:20 PM roycroft: i'll experiment some more when i have the time - it's been a long time since i tried to test using a braking resistor
12:21 PM IchGucksLive: roycroft: the VFD will not need this
12:21 PM gloops: hes going to add another cross beam to the Y - its drilled for it, space between Y bearings looks about 8 inch
12:21 PM gloops: i used this heh http://www.ainscoughmetals.co.uk/items/steel-box-section/4.815-rhs-!-60mm--x-40mm-4mm-thick-mild-steel-box-section/2067
12:21 PM gregcnc: if it doesn't have a brake it will essentially coast. DC braking at 10HZ is odd. mine do it from any frq
12:25 PM Tom_itx is now known as Tom_L
12:25 PM IchGucksLive: gloops: there are 20meter sets on BAY
12:25 PM IchGucksLive: at about 100Euros
12:25 PM IchGucksLive: Tom_L: its off
12:25 PM IchGucksLive: beer
12:25 PM the_wench: I am not your waitress!
12:25 PM IchGucksLive: its on
12:25 PM gloops: well too late now its welded up
12:25 PM Tom_L: well which is it? :)
12:25 PM Tom_L: doesn't seem to be responding
12:25 PM IchGucksLive: gloops: http://www.ebay.de/itm/ALU-Profil-Aluprofil-8-Stab-40x40-2000mm-Nut-8-Profile-Aluminium-AlClipTec/381850986858
12:25 PM gloops: makes for a very easy build
12:25 PM gloops: and precise build
12:25 PM Tom_L: what you workin on?
12:25 PM gloops: ive got to mark out and punch and drill over 100 holes
12:26 PM Tom_L: well it's about time c-log
12:26 PM gloops: mine is only a router Tom, was just looking at one someones building
12:29 PM Tom_L: missed much last couple days?
12:30 PM gloops: hmm, usual stuff, someone tried reporting a bug but i didnt know anything about it
12:31 PM Tom_L: JT-Shop's makin a chicken feeder i see
12:34 PM gloops: yeah saw the design, i wasnt paying too much attention
12:35 PM -!- #linuxcnc mode set to +v by ChanServ
12:35 PM gloops: problem round here is rats, you can only really feed enough for them to clean up during the day
12:35 PM gloops: otherwise the rats are in the feeders at night
12:53 PM andypugh: I am not sure I understand plant hire rates. Compare: https://www.speedyservices.com/10_0176-h-mag-drill-stand-piccolo-30mm with https://www.kelvinpowertools.com/alfra-piccolo-38/50-mag-drill-c-120-p-9190
12:55 PM IchGucksLive: as long as the rats dont kill the cnc hydrauik it is ok
12:57 PM jdh: expense vs. capital?
01:00 PM IchGucksLive: Gn8
01:20 PM gloops: germany in a bit of a mess atm
01:20 PM roycroft: yeah, looks like another election is going to happen soon
01:20 PM roycroft: merkel's days may be numbered
01:23 PM gloops: dont think they have anyone to replace her
01:24 PM roycroft: that's what the new election would be about
01:26 PM roycroft: she either needs an outright majority or a new election might give the spd a plurality, and the fdp would likely be willing to form a coalition with the spd
01:26 PM roycroft: although it seems unlikely that the spd could gain enough support to overtake the cdu/csu any time soon
01:29 PM gloops: and the danger of further afd gains
01:29 PM roycroft: yes
01:29 PM roycroft: but fortunately nobody wants to form a coalition with afd
01:31 PM andypugh: Merkel should hold an election to prove her mandate. It worked _so_ well for May.
01:31 PM gloops: yes May was doing so well
01:31 PM roycroft: was and is
01:31 PM roycroft: she's a shining example to the rest of the world
01:32 PM MrHindsight: democracies are on the way out
01:32 PM roycroft: i'm not so sure about that
01:32 PM gloops: yes, the great spectre is haunting europe again
01:32 PM roycroft: trump may be responsible for a resurgence of democracy in the usa
01:33 PM roycroft: the virginia election earlier this month was a stunning victory for democracy
01:33 PM MrHindsight: guberments are like steering large ships
01:33 PM MrHindsight: takes a while to change course
01:33 PM roycroft: the problem is that most governments are too big
01:33 PM roycroft: governing is best done as locally as possible
01:34 PM MrHindsight: maybe Germany needs someone worse than Trump to wake people up
01:34 PM roycroft: anyway
01:34 PM MrHindsight: I didn't think trump would be bad enough but he's proving me wrong
01:35 PM roycroft: in the recent election, the spd + fdp + linke + grüne still don't add up to a majority coalition
01:35 PM roycroft: they could probably form a minority government, but i'm not sure that's possible
01:36 PM MrHindsight: Make Germany Great Again!
01:37 PM sync: roycroft: no that is not possible
01:37 PM roycroft: i'm not familiar enough with german parliamentary law to know if a minority coalition can form a government without the plurality party
01:37 PM roycroft: it can happen in the uk
01:37 PM MrHindsight: for the USA they seem to have meant the 1840's
01:37 PM roycroft: as long as the queen is ok with it :)
01:45 PM enleth: R2E4: you seen my earlier suggestion for your drive enable problem? I've got join/part messages muted, I'm not sure you were actually there or had a chance to see it in the backlog
01:51 PM andypugh: This is impressive stuff. Every single hammer blow seems to have exactly the desired effect: https://www.youtube.com/watch?time_continue=74&v=TYRYPM19Tg0
01:55 PM MrHindsight: beginners luck
01:58 PM gregcnc: when time was cheaper than material
01:59 PM roycroft: yeah, that crew are impressive, andupugh
02:00 PM roycroft: from what little i've been able to watch
02:01 PM gloops: the old smithy was a skilled man
02:03 PM -!- #linuxcnc mode set to +v by ChanServ
02:12 PM gloops: probably blacksmiths made the first leadscrew
02:14 PM gloops: apparently a filed screw, crude at first, use that to make the next screw, and that one to make the next - do that 4 or 5 times and inaccuracies are reduced to not very much at all
02:17 PM andypugh: I think there is more to it than that, otherwise you get an exact copy of the first screw.
02:17 PM gloops: also documentation of wire twined round a wooden spindle
02:18 PM phipli: evening
02:18 PM gloops: yeah i wondered about that andypugh
02:18 PM andypugh: The difference between making perfect flats and hand-grinding telescope mirrors seems to be that you use three pieces in rotation to make a flat.
02:19 PM andypugh: (and I assume that you make squares in the same way as flats, once you have made your flat)
02:19 PM gloops: you can get a good spiral on wood lathe using cable pull
02:21 PM gloops: and how would you know you had a good screw?
02:21 PM gloops: or flat
02:21 PM SpeedEvil: measure it against another screw
02:21 PM gloops: which one? as no other perfect screw exists
02:21 PM SpeedEvil: two indicators, and compare the movements of nuts
02:21 PM gloops: you have got any indicators
02:21 PM gloops: havent
02:21 PM SpeedEvil: gloops: yes, there are certain inaccuracies that can be ruled out.
02:22 PM andypugh: If you have three flats they can only agree if they are flat.
02:22 PM roycroft: you know it's a good screw if she thanks you after
02:22 PM gloops: andypugh how does that work?
02:22 PM XXCoder: gloops: it would require error recude process so next screw woild be much better
02:22 PM SpeedEvil: gloops: an indicator that is relative only and has no absolute accuracy isn't very hard to do
02:22 PM XXCoder: repeat error is smaller than your tol range'
02:23 PM gloops: XXCoder yes, the copying and adjusting successive screws speeds things up i guess
02:23 PM andypugh: gloops: You weren’t an apprentice fitter then? That’s one of the first things they used to do, hand file and scrape a set of surface plates.
02:23 PM gloops: not apprentice fitter no lol, ive probably done it at some time in the murky past
02:24 PM andypugh: Blue and scrape A to B. Blue and scrape B to C. Blue and scrape B to A. Repeat. A lot.
02:24 PM andypugh: (Sorry, C to A was the last)
02:24 PM andypugh: And I think that you might do the other combos too.
02:25 PM MrHindsight: I forget are they flat when everything is blue or no blue remains
02:25 PM andypugh: But, the point is that if you just blue and scrape two together you can get a concave/convex pair, but that can’t happen if you do three.
02:25 PM gloops: theyre flat when its time to clock off
02:25 PM XXCoder: MrHindsight: mostly gone when its mechinism that move against each other, like rails
02:25 PM XXCoder: dunno otherwise
02:26 PM MarcelineVQ: good question. I would guess it's more about even-ness of color presense than amount of color presence
02:29 PM gloops: yes that you could easily file thread gauges
02:29 PM gloops: - yes that
02:29 PM MrHindsight: what if you have 3 microscopic high spots? the plates would not touch and there would be no blue
02:30 PM gregcnc: andypugh didn't you link a pdf spcifically about making flats with three plates? i thought i saved it but guess not
02:30 PM XXCoder: mr that would tke blue off only at those 3 high spots
02:31 PM MarcelineVQ: then you have an piece that's flat on average, but if it's flat on average in a way that matters hinging should reveal that
02:31 PM MarcelineVQ: but I'm skeptic about that particular example working out perfectly to cause that
02:33 PM MrHindsight: that's why one always should use more than one method to measure
02:33 PM gloops: im going to get a proper scraper, or make one
02:33 PM SpeedEvil: Angle grinder
02:33 PM SpeedEvil: (mostly kidding)
02:33 PM gloops: not as satisfying
02:33 PM andypugh: My dad used to blue and angle-grind gear teeth.
02:34 PM MrHindsight: gregcnc: maybe http://ericweinhoffer.com/blog/2017/7/30/the-whitworth-three-plates-method
02:34 PM SpeedEvil: :)
02:35 PM andypugh: One gear took 3 men 6 shifts to grind, and four grinders in rotation so they got the chance to cool down. It was a big pinion meshing with an even bigger wheel.
02:35 PM andypugh: I think that the idea was to take 6mm off of every meshing face to lose some spalling, and to get the machine running again while a new gear set was made.
02:36 PM MrHindsight: Making flat lapping plates (look like a several part series, might be hours) https://www.youtube.com/watch?v=rHmsQEAx16o
02:38 PM gloops: you can just see some nice big gears on this https://uk.video.search.yahoo.com/yhs/search;_ylt=AwrIQcqcPBNaK00Al0B3Bwx.;_ylu=X3oDMTBybDA1bGNhBGNvbG8DaXIyBHBvcwMyBHZ0aWQDBHNlYwNzYw--?p=Kelham+Island+Steam+Engine&fr=yhs-ddc-linuxmint&hspart=ddc&hsimp=yhs-linuxmint#id=43&vid=3281d8b173da2b5abb0770d140020a57&action=view
02:38 PM gloops: but i remember a much larger gear it drives, laid horizontal, fills the whole room, moves very slow
02:39 PM MrHindsight: wow was that a real time direction change in the first 20 seconds?
02:39 PM gloops: oh yeah, forward/reverse instant
02:40 PM gloops: steam engine from river don works
02:40 PM gloops: you can still see it running every day, not been for 20 years or so
02:43 PM MrHindsight: gregcnc: did you see the links yesterday about the mach3/4 retrofit supplier?
02:43 PM gregcnc: I saw but was busy and didn't look. Basically understood it was a lot of money
02:44 PM gregcnc: I was thinking of the 1908 document here https://circuitousroot.com/artifice/machine-shop/surface-finishing/hand-scraping/index.html#whitworth-1840-misc
02:46 PM MrHindsight: wow (From Popular Science Monthly, Vol. 32, No. 4 (February, 1888)
02:49 PM MrHindsight: math and science are still the same after all this time, no new textbook required
02:50 PM XXCoder: some is same not all
02:50 PM MrHindsight: within the context of the articles
02:50 PM gloops: there is a pattern through the ages
02:51 PM gloops: you scrape something flat so it can be used to make more flat things
02:51 PM gloops: rinse/repeat
02:51 PM gloops: same as now you make machines to make better machines
02:52 PM gloops: https://www.ebay.co.uk/itm/scrapers-Bearing-lathe-bed-engineers-metal-vintage-mechanics-tools/332451514098?
02:52 PM MrHindsight: (If anyone ever tells you that three plates are used to generate an original set of surface plates because "if two plates are equal to a third they must all be planar" (or the like), this is the volume to which to direct them in order to dispel this oversimplification.)
02:53 PM MrHindsight: http://mooretool.com/publications.html
02:53 PM gloops: ok
02:53 PM gloops: link saved on 4 hard drives and 3 usb sticks
02:54 PM gregcnc: uh they still sell it, now I feel bad for finding a pdf of moore's foundations
02:55 PM gregcnc: some interesting stuff in that book
02:55 PM MrHindsight: http://www.pearl-hifi.com/06_Lit_Archive/15_Mfrs_Publications/Moore_Tools/Foundations_of_Mechanical_Accuracy.pdf
02:56 PM MrHindsight: some prefer hard copies
02:56 PM MrHindsight: you can't press flowers with pdf's
02:57 PM MarcelineVQ: all kinds of stuff in there http://www.pearl-hifi.com/06_Lit_Archive/15_Mfrs_Publications/
03:00 PM gloops: Dr Wainwrights 'Instructions to the intrepid student of the hand scraper'
03:01 PM MrHindsight: sounds fishy
03:33 PM toastydeath: quick note to all from above:
03:33 PM toastydeath: master screws get checked with either gage blocks or an interferometer
03:34 PM toastydeath: almost always after going through at least one lapping pass
03:35 PM gloops: interesting toasty - but remember those werent available
03:36 PM toastydeath: sure they were
03:36 PM gloops: well gauge blocks of some kind maybe
03:36 PM toastydeath: just not standardized
03:37 PM SpeedEvil: you can go from make a flat -> make a cube -> make relative gage blocks.
03:37 PM toastydeath: early early screws got cut using gears, which were cut at first by hand division and later by dividing plates
03:37 PM SpeedEvil: It's just really annoying
03:37 PM toastydeath: if you don't have much to do and don't care about depth of cut, you can make all sorts of clockwork tools that generate involutes and drive them with capstans, which is highly accurate
03:37 PM gloops: yes dividers, division, measure the travel and so on
03:38 PM gloops: i still think a cable drag would have been a good start
03:39 PM toastydeath: cable drag?
03:40 PM gloops: pull carriage along screw shaft with cable winding round the lathe spindle
03:40 PM Deejay: gn
03:40 PM gloops: you get motion relative to the rotation
03:40 PM toastydeath: that is a capstan drive
03:40 PM toastydeath: and they're still used in ultraprecision tools
03:40 PM gloops: well it now yes
03:40 PM gloops: is
03:41 PM gloops: this would have been done between centres on a wood lathe
03:41 PM XXCoder: I wonder if we could use rock to make air hockey without air
03:41 PM toastydeath: ..?
03:41 PM toastydeath: rock instead of air?
03:42 PM XXCoder: yeah rock is so flat that other very flat thing can glide over it lol
03:42 PM MarcelineVQ: XXCoder: if your puck is teflon you can play air hockey on anything
03:42 PM XXCoder: teflon and rock combo
03:42 PM toastydeath: if you shape the underside of the puck correclt,y that works
03:42 PM toastydeath: dynamic fluid bearing
03:43 PM toastydeath: gets beat up from the start/stop but during travel behaves identically to a static fluid bearing
03:45 PM XXCoder: I saw that video where guy makes air bearing
03:45 PM XXCoder: insane stuff.
03:45 PM toastydeath: that's what i used to do, my shop made nothing but air bearings
03:45 PM toastydeath: plus some power plant stuff for GE
03:45 PM XXCoder: it bounced like a spring but nothing iside but air and very close fitting
03:46 PM toastydeath: they're pretty easy to make too, even the porous media ones
03:48 PM XXCoder: cool
03:48 PM XXCoder: funny I saw boss almost destroy big 90 degree support once
03:49 PM toastydeath: haha
03:49 PM XXCoder: surface was recently ground, and 90 degree was new
03:49 PM XXCoder: so he was talking and showed slide so smoothly
03:49 PM XXCoder: he missed it lol and caught it right before it fell off into surface
03:49 PM XXCoder: *floor
03:50 PM XXCoder: that'd probably kill 90 degree support accuracy. its heavy cast iron so might even shatter
03:50 PM MrHindsight: toastydeath: howya been LTNS
03:50 PM toastydeath: ltns?
03:50 PM toastydeath: ohhh
03:51 PM MrHindsight is now known as CaptHindsight
03:51 PM toastydeath: pretty good, just not on irc much
03:51 PM CaptHindsight: long time no ...
03:51 PM toastydeath: how's your shenanigans?
03:51 PM CaptHindsight: fun as always
03:52 PM CaptHindsight: this channel lost a few during the reprap years
03:52 PM CaptHindsight: IQ points and people
03:52 PM CaptHindsight: seems to be bouncing back now
03:54 PM CaptHindsight: toastydeath: did you make any linear air bearings?
03:54 PM toastydeath: yep
03:54 PM toastydeath: we made full slides pre-assembled
03:55 PM toastydeath: 48" max usually
03:55 PM CaptHindsight: need some about the length
03:55 PM CaptHindsight: for inkjet
03:57 PM CaptHindsight: with linear servos
03:57 PM toastydeath: if you want to make them fairly simple, get something that can be lapped like steel or cast iron. mill out a holder, on the bottom cut a bunch of air channels, drill into them and tap npt
03:57 PM CaptHindsight: have the servos
03:57 PM toastydeath: then, get a thin plate of the same material and drill a bunch of small, random holes all over it. put an o-ring around the edge, bolt it into the holder with the air channels
03:58 PM CaptHindsight: can also make polymer granite custom
03:58 PM toastydeath: once it's bolted up, lap the bottom with some sandpaper on a surface plate
03:58 PM toastydeath: boom, air bearing
03:59 PM CaptHindsight: you just used o-rings on the outer edges of the linear type?
03:59 PM toastydeath: no, we made pretty much exclusively porus media bearings, so they were glued into the holder
03:59 PM CaptHindsight: easy with a rotary
03:59 PM CaptHindsight: ah ok
03:59 PM toastydeath: the o-ring doesn't need to be fancy, just need a seal to keep the air in
03:59 PM CaptHindsight: the ends
03:59 PM toastydeath: you could use liquid sealant/caulk
04:00 PM CaptHindsight: what sorts of loads did they carry?
04:00 PM CaptHindsight: how much mass?
04:00 PM CaptHindsight: max
04:01 PM toastydeath: a little bit under the theroetical max - so if the bearing was running 60 psi (most were) you just do the multiplication and call it like 70-80% of that
04:01 PM CaptHindsight: so 30% is a good margin
04:01 PM toastydeath: yep
04:01 PM toastydeath: also keep in mind they're really sensitive to preload
04:02 PM toastydeath: you definitely want to preload the bearing somehow, usually with another air bearing
04:02 PM toastydeath: vacuum can also be used
04:02 PM XXCoder: air bearings all way down
04:02 PM XXCoder: sorry
04:02 PM CaptHindsight: thanks
04:02 PM CaptHindsight: bbl
04:02 PM toastydeath: so if you want just one air bearing and not a bunch for peload, you ring the outside with the bearing orifaces and just cut a giant pocket out in the middle, vacuum on that
04:02 PM Tom_L: we get IQ points for being here??
04:03 PM synfinatic: negative points
04:04 PM MarcelineVQ: omy https://www.youtube.com/watch?v=sFrVdoOhu1Q that spin he does
04:04 PM XXCoder: yep thats why we make sure our iq is high enough, because too low and we die when we enter here
04:05 PM gregcnc: https://www.youtube.com/watch?v=lOTWx69mghM
04:06 PM XXCoder: it keeps spinning. https://www.youtube.com/watch?v=BF60s6LeQkI
04:06 PM XXCoder: combine with air blowing on bearing it could reach silly rpms
04:07 PM toastydeath: yeah, we had an accident with that once
04:07 PM XXCoder: what happened?
04:08 PM toastydeath: i was making a research bearing for Zygo, and they needed a spherical air bearing
04:08 PM toastydeath: so I cut it and sent it into the tuning dept
04:09 PM toastydeath: one of the things that happen with air bearings is that they don't vent air evenly around the perimieter. so linear bearings will have a small force pushing them in one direction or another
04:09 PM toastydeath: but on a spherical bearing, there's nothing stopping the bearing from moving - no matter what direction the excess vents, it'll continue to gain speed
04:10 PM toastydeath: so we have this 2" ball, deadass mirror finish, and the tuning guys left it sit in the bearing for like two hours
04:10 PM toastydeath: they walk in later, hear this light wooshing noise, sounds like it's coming from the bearing. thinking something's wrong, they cut the air
04:10 PM toastydeath: that wooshing noise was the air being dragged over the surface of the ball because it was spinning so fast
04:11 PM toastydeath: makes contact, and catapults itself out of the bearing, up the wall, into the ceiling, and keeps repeating that cycle for several minutes
04:11 PM XXCoder: was everyone ok? because dang
04:11 PM toastydeath: no idea how fast it was spinning because even after like 10 minutes it was over 100k
04:12 PM gregcnc: dang
04:12 PM toastydeath: and we slowly shut it down
04:12 PM toastydeath: yeah everyone was fine
04:12 PM XXCoder: super smooth and dragging air I bet it was very very high
04:12 PM XXCoder: because drag must be damn near zero
04:12 PM toastydeath: so we had to warn zygo not to leave the bearing on
04:13 PM toastydeath: but it actually worked out for them because they wanted it to spin and weren't sure how to spin it without leaving residue on the ball
04:13 PM Tom_L: heh
04:14 PM gregcnc: I like the granite spheres floating on water
04:14 PM XXCoder: toastt I bet future of bearings would be in space
04:14 PM XXCoder: and ensuring there is no gravity changes as it forms
04:14 PM toastydeath: ?
04:15 PM XXCoder: forming near perfect spheres
04:15 PM toastydeath: we can do that here, the problem isn't actually gravity
04:15 PM toastydeath: it's the crystalline structure of the material
04:15 PM XXCoder: so have to grind anyway?
04:15 PM toastydeath: because of how spherical lapping works, gravity doesn't impact the process
04:16 PM toastydeath: no, the structure is the limit of how spherical you can make it
04:16 PM XXCoder: interesting. I'd want to chat more but gonna go work. bleh. laters
04:16 PM toastydeath: b/c even amorphous solids, while they don't have microscopic crystalline structure, do have macroscopic structure resulting from differences in cooling
04:16 PM toastydeath: bai2u
04:17 PM gregcnc: ok I was thinking non uniform density hardness etc
04:18 PM toastydeath: it is
04:18 PM toastydeath: but even structures with uniform density and hardness will exhibit different wear rates on different sides of the crystalline face
04:19 PM toastydeath: so the sphere winds up slightly hexagonal or cubic
04:20 PM toastydeath: or egg/nonuniform for amorphous materials
04:20 PM gregcnc: makes sense, is this measured in nanometers or?
04:21 PM gregcnc: I haven't seen a fly cutter like this before https://www.instagram.com/p/BbuPIuRFCEf/
04:22 PM toastydeath: depends on the application - for low accuracy, nanometers
04:22 PM toastydeath: higher accuracy, they'll measure it fractions of a wave for whatever light source they're using
04:22 PM gregcnc: nanometers for low accuracy, OK stuff mortals dream about
04:22 PM toastydeath: hahahaha
04:23 PM toastydeath: most of the time it's for optics
04:23 PM toastydeath: so nanometers aren't quite so helpful
04:24 PM Crom_: Doh! Screwed up speed on a 1/32" slitting saw, now to figure out how to sharpen it,
04:25 PM Crom_: I have 4' to slit all told
04:25 PM Crom_: blade like real slow
04:26 PM Crom_: now to make a 20mm arbor adapter for my angle grinder
04:27 PM MarcelineVQ: time to build that mist cooled power hacksaw you always wanted
05:24 PM JT-Shop: CaptHindsight: that place is pretty far from me
05:39 PM andypugh: gloops: Did I mention that my great-grandfather left the merchant navy to run the River Don Engine? It is similar to the marine engines of the time, you see. That engine is the reason I am a Yorkshireman and not Welsh.
05:46 PM archivist: last time I turned up at Kelham Island it was shut
05:51 PM andypugh: And talking about how to start from scratch, Clickspring has a very good video about how to mark-off and hand-file gears in his Anitlythera series: https://www.youtube.com/watch?v=BIUAdINXZmQ
05:52 PM archivist: one day I might/will upgrade to see youtube again
06:10 PM CaptHindsight: JT-Shop: sorry had you confused with someone else up in Sullivan
06:22 PM JT-Shop: no biggie
06:23 PM phipli: andypugh, with a name like Pugh I could have guessed you're family had lived there at some point
06:23 PM phipli: had a teacher called Pugh...
06:23 PM phipli: anyhow - sleep time for me
06:24 PM andypugh: Many of the surnames beginning with P are welsh, from “Ap” = “Son of”
06:25 PM andypugh: Pugh = Hughson, Pritchard = Richardson, Parry = Harrison,
06:26 PM JT-Shop: I wonder what Thornton comes from?
06:28 PM andypugh: It’s a place
06:28 PM JT-Shop: my father did look English with the curly black hair an all and IIRC I have some English in me and some Irish, I had red hair when I was less old than now
06:28 PM JT-Shop: in England?
06:30 PM archivist: Thornton-Cleveleys Blackpool
06:30 PM JT-Shop: cool, thanks archivist
06:31 PM archivist: and Thornton in Scotland
06:31 PM archivist: near Kirkcaldy
06:31 PM andypugh: The one I know is Thornton-in-Lonsdale, where one of my favourite pubs is: https://goo.gl/maps/QsfAZ5gz44C2
06:32 PM andypugh: But there are lots of them. https://en.wikipedia.org/wiki/Thornton
06:33 PM JT-Shop: wow there is a lot of them
06:34 PM andypugh: This might be the funnest: https://en.wikipedia.org/wiki/Thornton-le-Beans
06:35 PM JT-Shop: my mom used to sing the bean song to me
06:35 PM JT-Shop: Beans, beans, the musical fruit
06:35 PM JT-Shop: The more you eat, the more you toot
06:35 PM JT-Shop: The more you toot, the better you feel
06:35 PM JT-Shop: So we have beans at every meal!
06:37 PM JT-Shop: The town's odd name is derived from the common place name 'Thornton', meaning a farm with thorn bushes. This farm had beans grown upon it.
06:38 PM JT-Shop: goodnight
06:38 PM archivist: some of the derivations I see seem a bot bogus
06:39 PM archivist: more about selling you a sheet of generic stuff about any word remotely similar to your name
06:40 PM archivist: we did pay for our surname... nothing seems close in it
06:43 PM andypugh: I didn’t know you had an actual human name, archivist :-)
06:45 PM archivist: https://en.wikipedia.org/wiki/Caroline
06:46 PM andypugh: Maybe a Charles who got ideas?
07:07 PM R2E4: JT-Shop: you there?
07:14 PM R2E4: JT-Shop: You have 20 of the din rail mounts? I ordered them today along with 5i25 and some other cards. I forgot to check if they were in stock.
07:34 PM CaptHindsight: 3D printer almost done https://imagebin.ca/v/3i0LDN2s3TZ7
07:43 PM jdh: is that an Aries drive?
07:44 PM CaptHindsight: jdh: lower middle, yes
07:45 PM CaptHindsight: positioners, servos and drives are all Parker
07:45 PM jdh: pretty cool setup with the compumotor serial encoder. We have some with those and heidenhain
07:46 PM CaptHindsight: 5mm pitch ballscrew with 4k cpr encoder
07:50 PM jdh: I have Parker ACR9000 controllers. They are very un-parker-like
07:51 PM CaptHindsight: I like the Aries. They just work
07:52 PM CaptHindsight: I find lots of custom Parker on ebay
07:53 PM CaptHindsight: often it's just some minor difference from a standard part number
07:54 PM CaptHindsight: jdh: the ultra positioner next to it has a 40tpi screw
07:55 PM jdh: we have tons of parker plain old 23/34 steppers. we buy real compumotor replacements. cost a ton, slow to get.
07:55 PM jdh: for almost all uses, a $20 chinese motor would work as well
07:56 PM CaptHindsight: new parkers must cost ~$1k
07:56 PM jdh: what do those two positioners do?
07:56 PM jdh: heh, double stack 23 with encoder is like $1200, then they take the encoder off
07:56 PM CaptHindsight: one is the powder supply piston, the other is the build stage under the laser galvo
07:59 PM CaptHindsight: https://www.youtube.com/watch?v=x_ROkgQYLh0
08:15 PM sync: CaptHindsight: can you reuse the powders?
08:17 PM CaptHindsight: sync: yes, they are thermoplastics
08:18 PM sync: well sure, but some mfgs advise against using it again
08:19 PM CaptHindsight: if you mean regrind a printed part then it will change them a bit
08:19 PM CaptHindsight: using fesh powder for each print run is best for the powder supplier
08:19 PM CaptHindsight: fesh/fresh
08:20 PM Jymmm: Not sure about 3D printing, but you can use HF powder coating powder and a laser to "bake it"
08:21 PM Jymmm: then just brish off the loose powder
08:21 PM Jymmm: brush*
08:21 PM CaptHindsight: yes powder coating powders are available in many thermoplastics
08:22 PM Jymmm: HF is limited to blk, red, yel, and blu iirc
08:23 PM CaptHindsight: oh harbor fright
08:23 PM CaptHindsight: what does the SDS say the powder is? Polyester
08:23 PM Jymmm: My bad... blk, red, white, yellow
08:23 PM Jymmm: https://www.harborfreight.com/catalogsearch/result/index/?dir=asc&order=EAScore%2Cf%2CEAFeatured+Weight%2Cf%2CSale+Rank%2Cf&q=Powder+Coat+Paint
08:24 PM CaptHindsight: they are just micronized thermoplastics
08:25 PM gregcnc: I was looking for parker servos one ebay, but nobody has any idea what the custom encoders CPR is
08:25 PM sync: nah CaptHindsight I mean reusing the powder that was in the cylinder without being sintered
08:26 PM sync: gregcnc: easy to find out tho
08:26 PM gregcnc: once I buy it
08:26 PM CaptHindsight: sync: we do it all the time
08:27 PM CaptHindsight: gregcnc: 500 or 1k ppr are the standard options, but they could use anything
08:27 PM gregcnc: right
08:28 PM gregcnc: there is also a code for a 5k
08:28 PM CaptHindsight: even 100 ppr :)
08:28 PM gregcnc: E code just means encoder
08:30 PM CaptHindsight: depends on the series and date
08:30 PM CaptHindsight: SM D=500 ppr, E=1000 ppr, H= hall effect only, R = resolver
08:31 PM gregcnc: Found a listing for two with 5k but needed three and they just aren't common.
08:32 PM CaptHindsight: call parker, they are pretty good at deciphering a custom part number
08:32 PM CaptHindsight: they buy their encoders from a source in Schaumburg
08:33 PM CaptHindsight: the local parker guys know all the encoder suppliers
08:33 PM CaptHindsight: I once had a bad custom servo
08:33 PM CaptHindsight: I pulled the encoder and sent them a pic...
08:33 PM gregcnc: BE series list 2k and 5k line
08:33 PM CaptHindsight: the next day the guy that makes that exact encoder called me back
08:34 PM CaptHindsight: $200 shipped
08:34 PM gregcnc: dynapar is north, who was that?
08:34 PM CaptHindsight: http://www.parkermotion.com/literature/precision_cd/CD-EM/compumotor/cat/english/BE_Series.pdf
08:35 PM sync: I don't think HH makes encoders in the us
08:36 PM CaptHindsight: that pdf ^^ only shows a 2k encoder with a J
08:37 PM gregcnc: 2013 copy i have says L is 5k
08:37 PM CaptHindsight: yeah have to check the year
08:38 PM CaptHindsight: might have been https://ecatalog.dynapar.com/ecatalog/incremental-encoders/en/F10
08:39 PM CaptHindsight: getting the encoder aligned with the hall sensors can be a pain
08:39 PM jdh: why do you have to align them? I don't recall ever doing that with a Parker
08:40 PM gregcnc: if you replace one
08:41 PM CaptHindsight: UPS dropped the positioner on its end wit the servo motor attached...
08:42 PM CaptHindsight: bent the servo motors shaft just enough to make the encoder wheel scrape against the sensor/diode
08:43 PM CaptHindsight: so it worked until it got too scratched
08:45 PM CaptHindsight: worked long enough to tune the servo then it just acting crazy
08:47 PM CaptHindsight: sync: the powder in the supply piston is heated to the same temp as the build stage and oven
08:47 PM CaptHindsight: sync: the powder doesn't melt until the laser hits it
08:49 PM CaptHindsight: the cheapo SLS don't have a build oven with inert gas, they just print with air and at room temp
08:49 PM sync: yes, they said that it still degrades because the temperature is quite close to the melting temp depending on your setup
08:49 PM sync: but I sense a lot of bullshit
08:49 PM CaptHindsight: I can see old powder sitting out absorbing moisture
08:50 PM CaptHindsight: yes, I got my boots on :)
08:50 PM CaptHindsight: what is to degrade?
08:52 PM CaptHindsight: oxidize, absorb moisture, if it melts then the particles can agglomerate making for larger powder particles
08:54 PM CaptHindsight: if i was printing with <100um features then it might have an effect if they agglomerate
08:56 PM CaptHindsight: if the part required super precision than i could see filtering the powder before a second use
09:29 PM MarcelineVQ: can anyone think of a use for a crockpot in a garage shop?
09:33 PM roycroft: i have a couple small crock pots in my garage shop
09:33 PM roycroft: i use them for pickling metals after soldering or annealing
09:37 PM MarcelineVQ: thanks :D
09:58 PM Crom_: MarcelineVQ: Crock pots are great for degreasing parts... put in crockpot, fill with water and purple cleaner, heat...
09:59 PM Crom_: Old shop, we had one, just for soup, chili, stew for lunch...
09:59 PM MarcelineVQ: oh? interesting
09:59 PM Crom_: we saved a ton of money eating in
10:00 PM Crom_: with 6 deer hunters we never lacked for meat
10:01 PM chopper791: hello
10:02 PM MarcelineVQ: I don't need the crockpot but it's not worth selling around here so I'd rather find a use for it than tossing, degreasing idea is neat
10:02 PM Crom_: fudge, 7/8 grinder arbor is too hard ford me to cut... I'm going to have to make a holder for a angle grind on the lathe qctp
10:02 PM MarcelineVQ: you don't get weirdness in the air from the boiling water?
10:02 PM Crom_: grinder
10:03 PM Crom_: MarcelineVQ: no boil, it's at 180F or so...
10:03 PM Crom_: or 165 for chili
10:03 PM Crom_: same on using for degreasing
10:04 PM Crom_: there was an exhaust fan over that bench for degreasing
10:06 PM Crom_: 3
10:08 PM Crom_: just ordered 5ea 65mm dia x 1mm thick x 72t slitting saws
10:09 PM Crom_: That should get me thru my remaining 47" of slitting
10:10 PM MarcelineVQ: what were you slitting?
10:10 PM chopper791: Replacment electronics have been powered on for 10 minutes now and no magic smoke is being released. Fingers crossed that I am finally sitting good on the electronics.
10:11 PM roycroft: the temperature that a crockpot reaches is perfect for a lot of cleaning tasks
10:12 PM * roycroft is a fan of simple green, but uses that primarily in his ultrasonic cleaners
10:23 PM roycroft: dilute simple green + 65c + ultrasonic + time will remove grease/oil, dirt, paint and bondo
10:28 PM MarcelineVQ: interesting. I've got some old simple green I've had for awhile waiting for me to find enough floor to use it on
10:50 PM roycroft: it's amazing stuff
10:50 PM roycroft: it works great, and can be safely rinsed down the drain
10:52 PM roycroft: the stuff it dissolves, not necessarily so much
10:53 PM MarcelineVQ: ehe
10:59 PM roycroft: still, even if the solute is nasty, the solvent being clean is a win, other than systems where the solvent can be fully recovered and recycled (not downcycled)
11:07 PM Connor: Well, got my DRO and Linear scales in today. Now to mount them to the Bridgeport. Still need to figure out brackets and mounting for the scale on the DRO.
11:07 PM Connor: I think it's going to be the hardest one to do.
11:08 PM djdelorie: Did you at least get a set of scales that's the right size for your bridgeport? ;-)
11:08 PM djdelorie: my DRO was a freebie and none of the holes lined up :-( Took a while to fit it
11:08 PM Connor: Trying to figure out how most people do it.. looks like most use the self contained.. kinda like digital calipers.
11:10 PM Connor: Scales are correct for the mill as far as I know. should work for a 9x48, 9x49 or 10x50
11:10 PM djdelorie: in my case, I made a bar the right thickness and as long as the bed (for X), mounted the scales to it, then mounted it to the bridgeport
11:10 PM djdelorie: likewise for the sensor
11:10 PM Connor: Mine has some holes too.. Chances are they won't match anything.
11:11 PM CaptHindsight: yeah just make some rigid mounts
11:11 PM djdelorie: or maybe I mounted it to the bridgeport first. It would depend on which holes were covered by which other parts
11:11 PM CaptHindsight: there are some DRO kits that have everything vs just the scales and readout
11:12 PM Connor: This was a kit.. came with brackets and bars and everything for all the axis except for the Quill.
11:12 PM Connor: http://www.tpactools.com/4-AXIS-DRO-DIGTAL-READOUT-BRIDGEPORT-MILL-PACKAGE-ALL-4-GLASS-SCALES_p_55.html
11:13 PM Connor: I probably make some brackets that look like the ones in this pdf. http://www.acu-rite.com/pdf/brackets/385026-01%20Ed%20D.pdf or this one http://www.acu-rite.com/pdf/brackets/385026-000%20Ed%20B.pdf
11:14 PM djdelorie: wait, are you trying to mount the scales, or the dro itself?
11:14 PM Connor: Scales.
11:14 PM Connor: X, Y and Knee are good.. mounting a scale for the Quill.
11:15 PM djdelorie: ah, I only have X and Y so no help there, sorry.
11:15 PM djdelorie: try duck tape :-)
11:15 PM Connor: I may prototype something out with the 3D printer and see if it'll work.
11:16 PM djdelorie: if it does work, will it still be a prototype? Or will you just leave it? ;-)
11:16 PM Connor: I'll make one out of aluminum.
11:28 PM monkeyisl: yo,, do i really need homing? ....
11:28 PM monkeyisl: i mean endstops for home xy
11:32 PM CaptHindsight: limits or home?
11:32 PM CaptHindsight: some just use software limits and home
11:32 PM monkeyisl: limits will be ok, but i mean homing .. to set origin
11:33 PM CaptHindsight: monkeyisl: what are you building?
11:33 PM monkeyisl: 4 axis cnc for alu
11:33 PM CaptHindsight: mill?
11:34 PM monkeyisl: it mills that's one of yup.. like flat alu.
11:34 PM CaptHindsight: people like HOME on Z to move the spindle near the top of the travel for tool changes
11:34 PM monkeyisl: hmm.. my question is ATC really works? in 0.001 accuarcy?
11:34 PM monkeyisl: so like
11:35 PM CaptHindsight: properly designed yes
11:35 PM monkeyisl: i let it go, and i go dinner and sleep next day it's done.
11:35 PM monkeyisl: it kinda can hapeen? LOL
11:36 PM CaptHindsight: a CNC mill with an ATC, yes but people still monitor them for broken tools, chatter, etc
11:37 PM monkeyisl: CaptHindsight could i find out some example on internet?.. hm.. like atc home build.. looks pro but still low buget.. if that makes sense
11:39 PM CaptHindsight: ATC with a carousel and arm to change tools? or just a pneumatic/hydraulic chuck?
11:39 PM CaptHindsight: https://www.youtube.com/watch?v=XntXTuXNfvE Matsuura's first 'successful' tool change under linuxcnc
11:40 PM CaptHindsight: https://www.youtube.com/watch?v=mxmmlR0jaXY Auto tool change
11:41 PM CaptHindsight: https://www.youtube.com/watch?v=yzQXqge-NLs Linuxcnc Bridgeport 412I Retrofit ATC
11:41 PM monkeyisl: wow
11:41 PM monkeyisl: i see camera! lol
11:42 PM monkeyisl: https://www.youtube.com/watch?v=mxmmlR0jaXY <-- camera? it's using opencv?
11:42 PM CaptHindsight: https://www.youtube.com/watch?v=0mwmas6hFRQ Raptor router tool change with linuxcnc
11:42 PM CaptHindsight: ^^ pretty home made
11:42 PM CaptHindsight: low budget and about your size IIRC
11:43 PM monkeyisl: the last one looks what i'm doing lol
11:45 PM monkeyisl: btw i tried my pal's mach3 lcnc with usb jog... and found why it sucks.
11:46 PM monkeyisl: and mach3 ignores all usb input when spindle is rolling.
11:46 PM monkeyisl: and latency is like not even ms period , it was close to sec
11:46 PM monkeyisl: btw that's one of..
11:50 PM CaptHindsight: mach3 lost counts on a Z-axis and now the table has a .01 deep grove .5 x 2"