#linuxcnc Logs

Aug 02 2021

#linuxcnc Calendar

01:16 AM roycroft: the mailing list would be the place
01:37 AM tjtr33: roycroft thx
01:40 AM Deejay: moin
01:53 AM randy: morning
04:11 AM Tom_L: morning
04:14 AM XXCoder: yo
04:35 AM XXCoder: fun
05:14 AM JT-Cave: morning
05:18 AM XXCoder: yo
06:32 AM mrec: how do you guys turn mist cooling on/off on your diy machines?
06:32 AM mrec: using a coil switch?
06:33 AM JT-Cave: M7
06:33 AM mrec: no I mean what kind of switch do you use?
06:34 AM JT-Cave: 24v air valve
06:34 AM mrec: a 4-5w one?
06:34 AM mrec: I have that one installed on mine.
06:34 AM JT-Cave: I'm not sure what the watts is
06:35 AM mrec: ok nevermind seems like those coil switches have to stay there for now
06:35 AM mrec: that coil switch*
06:35 AM mrec: I just added the circuit to my system incl flyback of course and it works well.
07:55 AM snakedLX is now known as snkaed
08:40 AM Eric_ is now known as unterhausen
08:40 AM perry_j1987: morning
09:12 AM perry_j1987_: anybody got fun projects for the day?
09:20 AM JT-Cave: automate a late 1800's spoke lathe
09:33 AM perry_j1987: nice
09:33 AM perry_j1987: im toying with the idea of building a little swiss lathe in the future heh
09:57 AM unterhausen: I just got my encoder working on the carriage of my lathe
09:57 AM unterhausen: I guess the dial markings on the lathe are diameter, hate to have to read the manual
09:58 AM unterhausen: what if I told the dro the scale was half what it actually is?
09:59 AM unterhausen: scale resolution
10:00 AM roycroft: you've never used this lathe before?
10:03 AM unterhausen: of course I have
10:03 AM unterhausen: never made the dials work that well, they slip, so I measure a lot
10:16 AM roycroft: we have a ban on campfires east of i5 now, but fortunately, not on the coast (yet)
10:17 AM roycroft: and we had thunderstorms to the east last night, with dozens of new fires
10:31 AM * flyback bites mrec
11:03 AM roycroft: 25 fires in the middle fork complex now, which is just to the southeast of here
11:43 AM unterhausen: I thought I had the right manual for my dro, but it doesn't have the right options in setup
11:47 AM unterhausen: okay, I think the manual for my version just doesn't explain it properly
11:47 AM unterhausen: the one for EDM machines has more detail
12:06 PM unterhausen: why would cutter comp offset the center of a hole instead of the diameter (mailing list reference)
12:18 PM roycroft: i'm not sure what you mean by offset the center of a hole, but a cutter offset should be the radius of the tool, not the diameter
03:15 PM unterhausen: roycroft, did you buy a control cabinet big enough to put a computer in?
03:29 PM JT-MachineShop is now known as JT-Shop
03:30 PM -!- #linuxcnc mode set to +v by ChanServ
03:33 PM roycroft: my linuxcnc computer is in its own rack-mount enclosure
03:34 PM roycroft: i have a short equipment rack on wheels that is for the linuxcnc computer, the motion control box, power supply, and the console will mount on top
03:36 PM unterhausen: I looked at that brewery electronics site and the biggest cabinet they have is 16x16
03:37 PM unterhausen: which is not big enough to have connectors on the computer
03:38 PM unterhausen: someone talked me out of using the NuC I bought because it eventually kills itself somehow
03:38 PM unterhausen: I suppose I could use it until it dies
04:02 PM Roguish: unterhausen, I got this for my cabinet. lots of room. https://www.amazon.com/gp/product/B073RJNDSW/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
04:03 PM unterhausen: thanks, that's an interesting option
04:03 PM JT-Shop: magnetic door catch?
04:04 PM Roguish: no, it has a 1/4 turn latch, with handle. and key.
04:05 PM JT-Shop: I see the key but no handle...
04:05 PM Roguish: both doors hinges are spring loaded pins, supper easy to take off and put on.
04:06 PM JT-Shop: my cabinet in process https://gnipsel.com/images/wood-working/saw-stop/
04:06 PM Roguish: oh, crap, maybe it doesn't have a handle..... haven't put the doors back on for some time....
04:06 PM JT-Shop: lol
04:07 PM Tom_L: they just get in the way
04:07 PM Roguish: I thought about a wooden one also. but opted for the metal. to each our own.
04:08 PM Roguish: received my R8's the other day.
04:09 PM Roguish: getting much closer to being able to actually machine with the new mill.
04:09 PM JT-Shop: cool
04:09 PM Roguish: will probably do a video
04:09 PM Roguish: of the first job.
04:09 PM Roguish: really want to test rigid tapping.
04:10 PM Roguish: JT-Shop, nice finger joints.
04:17 PM Tom_L: Roguish, test it in wood etc first time
04:17 PM Tom_L: and plan to get helix taps for cnc
04:28 PM JT-Shop: the odds of finding a cabinet that used up all the space under the table saw is slim to none :)
04:29 PM JT-Shop: thanks, finally getting good making box joints
04:56 PM unterhausen: my under-saw cabinet involved more glue and less joinery
04:57 PM unterhausen: same basic design, not sure what I'm going to put in the end cabinet
04:59 PM perry_j1987: there we go hopefully my tool post doesnt spin anymore
05:02 PM JT-Shop: I figure on the shelf end stuff like finger boards, push sticks etc
05:19 PM perry_j1987: boy i just dont know about these mist coolants
05:19 PM perry_j1987: just tried another one and the parts come out sticky
05:19 PM perry_j1987: way more friction i can tell when machining too
05:20 PM Tom_L: i haven't had a problem with it
05:21 PM perry_j1987: just tried it with the kool mist brand and this green cut
05:21 PM Tom_L: you're spinning the work and i'm spinning the tool if that makes a difference
05:22 PM Tom_L: i know it's working because some aluminum i have is real gummy without it
05:22 PM Tom_L: using coated carbide em
05:25 PM Tom_L: what do you mean they come out 'sticky'?
05:30 PM perry_j1987: feels like slightly coated it something with bit of friction to it
05:31 PM perry_j1987: surface finish goes down the tube when i use it
05:31 PM perry_j1987: chattery
05:57 PM -!- #linuxcnc mode set to +v by ChanServ
05:59 PM CaptHindsight[m]: cutting with carbide or HSS?
06:00 PM perry_j1987: carbide
06:01 PM perry_j1987: works great with sprits of WD-40
06:02 PM CaptHindsight[m]: not enough mist will just leave the parts and tools hot and sticky
06:02 PM CaptHindsight[m]: so you have to make more mist or slow down the feed/rpm's
06:02 PM perry_j1987: ok
06:07 PM CaptHindsight[m]: cutting is usually fastest with flood cooling
06:08 PM CaptHindsight[m]: since you are using lots of water to carry the heat away
06:11 PM perry_j1987: im thinking of setting that up
06:11 PM perry_j1987: i got the full enclosure on this lathe
06:11 PM perry_j1987: just need to setup a pan
06:14 PM JT-Cave: if your using carbide inserts designed for steel you will have poor finish on aluminum
06:14 PM perry_j1987: they put a nice finish with wd40
06:15 PM JT-Cave: an insert for aluminum is polished to a mirror finish with a dead sharp edge and you can cut paper with them or yourself as you prefer
06:17 PM JT-Cave: also the chip needs to be big enough to pull any heat out with it
06:18 PM perry_j1987: hmm
06:19 PM perry_j1987: i've tried finding places that sell these inserts mgnm200
06:19 PM perry_j1987: no luck except amazon pretty much
06:21 PM CloudEvil: Is there any particular reason you can't just take a random carbide insert and put a razor edge on it with a diamond wheel/stone?
06:22 PM perry_j1987: just chip breaker geometry and such to deal with
06:22 PM roycroft: you can't put a razor edge on most carbide
06:22 PM roycroft: carbide doesn't sharpen well
06:23 PM * roycroft just put some tried and true varnish oil on his lamp frame
06:29 PM -!- #linuxcnc mode set to +v by ChanServ
06:35 PM perry_j1987: so how big of a chip are we talking JT-Cave
06:35 PM perry_j1987: right now its set at 0.04 mm feed per revolution
06:36 PM Tom_L: .001-.003" chip load
06:39 PM perry_j1987: so thats within the range
06:39 PM perry_j1987: its not taking any heat away from the part i'd say though heh
06:41 PM Tom_L: you may be able to take more on a lathe but that's approx what i shoot for on a mill cutter per tooth
06:53 PM enleth: perry_j1987: if you have the means to go with flood coolant, do it
06:57 PM perry_j1987: i got an old reservoir and windshield washer pump out of an old car heh
06:57 PM perry_j1987: sittin here eyeballing me i could use that
06:58 PM enleth: it's messy but it does the job
06:59 PM Tom_L: i agree if you have the stuff to do it, flood is better
06:59 PM Tom_L: i'm just not set up for it so i use mist
06:59 PM perry_j1987: also like not running the air compressor
06:59 PM perry_j1987: those things are so obnoxious
07:01 PM enleth: perry_j1987: the small ones are, rattly little shits
07:01 PM _unreal_: hum no solarwind winds tonight
07:01 PM Tom_L: mine is big enough not to worry about that
07:01 PM perry_j1987: they need to be stored in the building far away
07:02 PM enleth: the bigger a piston compressor is, the less annoying it sounds
07:02 PM enleth: a big one mostly rumbles
07:03 PM Tom_L: i've had it so long i'm just used to it
07:03 PM perry_j1987: if i do flood on this lathe i will have to make some provisions to the enclosure
07:03 PM Tom_L: doesn't have to be a 100psi stream
07:03 PM perry_j1987: run silicone around the perimeter its just tacked on sheet metal on the base to a steel tubing frame
07:05 PM enleth: one of the two at the hackerspace is made out of a small car engine block, it's by no means quiet but it's possible to talk standing right next to it, it sounds like a mother of all heavy duty washing machines in the middle of a slow spin cycle
07:07 PM enleth: perry_j1987: if the windshield fluid pump doesn't do the job, submersible septic tank pumps are good for the job
07:07 PM enleth: cheap, quiet, will handle some crap (duh) in the tank
07:08 PM perry_j1987: the windsheild reservoir has a built in screen on the return hehe
07:08 PM roycroft: it used to be common to use air-cooled volkswagen engines connected to a motor as air compressors
07:28 PM _unreal_: well got a bit done at work on my scissor lift
07:28 PM _unreal_: got the PSU put together
07:43 PM _unreal_: so my coaster that I milled out of cutting board came out with mixed results
07:44 PM _unreal_: the UP cut bit was good and bad
07:44 PM _unreal_: left a lot of particals
07:44 PM _unreal_: still stuck
07:44 PM _unreal_: and no easy way to remove them
07:44 PM Tom_L: torch
07:44 PM _unreal_: I may try the cut again with a two flute straight
07:44 PM _unreal_: trie
07:44 PM _unreal_: tried
07:44 PM _unreal_: well I used my hot air reflow at full power
07:44 PM _unreal_: helped but didnt solve the issue
07:45 PM _unreal_: regardless I had to errors and ran the bit a mil deep over the top regardless so its a perm catch all drink coaster for me from now on :)
07:46 PM _unreal_: I'll post photos when I get to it
07:46 PM _unreal_: oh oh
07:46 PM Tom_L: stop messin with the plug
07:55 PM _unreal_: ! how did you know
07:55 PM _unreal_: heh
07:55 PM _unreal_: Tom_L, this micro dust collection system I built is @#%@#$ amazing
08:08 PM CloudEvil: :)
08:09 PM perry_j1987: just got a rag-tag setup for flood to try heh
08:09 PM perry_j1987: involves zipties and everything heh
08:11 PM _unreal_: flood?
08:11 PM _unreal_: and zip ties?
08:11 PM _unreal_: perry_j1987, results of the inverter setup and the compressor issue?
08:12 PM roycroft: if you want to try flood just move to florida
08:12 PM perry_j1987: no matter how big or where you place the tray
08:12 PM perry_j1987: it doesnt catch it all haha
08:12 PM roycroft: enough ice just broke off greenland the other day to cover all of florida with 2" of water
08:12 PM perry_j1987: wow
08:12 PM _unreal_: dont mind me while a roll my eyes
08:13 PM _unreal_: remember that ICE is floating
08:13 PM roycroft: not after it melts
08:13 PM _unreal_: and sea level has not risen
08:13 PM roycroft: actually, it is rising, constantly
08:13 PM _unreal_: roycroft, REALLLLLLY!!!!!!!! o,o O,o
08:13 PM roycroft: it's not going to rise 2" in florida next week though
08:13 PM _unreal_: roycroft, have you ever done the ice in a glass science project?
08:14 PM _unreal_: you take a glass 75% full of water and clear
08:14 PM _unreal_: you put a bunch of ice cubes in it
08:14 PM _unreal_: MARK the water line
08:14 PM _unreal_: LET THE ICE melt and observe the water line
08:14 PM _unreal_: OH LOOK THE LINE didnt move
08:14 PM roycroft: shrinkage was calculated into the how much ice fell off greenland equation
08:14 PM _unreal_: because the displacement of the water be it floating or liquid is the same
08:15 PM roycroft: there's usually dissolved air in ice
08:15 PM roycroft: and that is released as it melts
08:15 PM _unreal_: in fact water level can go down depending on air entrapment
08:16 PM roycroft: as well, water expands as it freezes
08:16 PM CloudEvil: Unless the ice is on land, as much is.
08:16 PM roycroft: it also expands as it gets hot
08:16 PM _unreal_: expansion does not increase mass
08:16 PM roycroft: nobody mentioned mass in any of this "discussion"
08:16 PM _unreal_: mass is still relevant regardless of state of the water
08:17 PM roycroft: at any rate, i was just making a joke
08:18 PM roycroft: the chunks that are breaking off greenland are on land before they break off
08:18 PM roycroft: it's not like the antarctic ice that is already in the sea, and just breaks away and goes on walkabout
08:18 PM roycroft: the greenland ice is mostly on land, and falls off into the sea
08:18 PM _unreal_: the thing I find funny is that florida has been having issues with loss of water not rising water
08:19 PM _unreal_: hence the sink holes
08:19 PM roycroft: florida is actually having both issues
08:19 PM roycroft: sea level is rising
08:19 PM roycroft: which will affect the coasts
08:19 PM roycroft: which are getting smaller
08:19 PM roycroft: and yes, overextraction of ground water is causing sink holes
08:20 PM _unreal_: coastal is not getting smaller LOL
08:20 PM _unreal_: over extraction could not agree more
08:20 PM * roycroft disengages before things get out of hand
08:20 PM _unreal_: well its as much extraction as it is changing the "flow"
08:21 PM _unreal_: FLORIDA does no really have damns
08:21 PM _unreal_: dams
08:21 PM _unreal_: but people have changed the normal wate shed a lot
08:21 PM _unreal_: causing red tide issues and sink holes an other issues
08:22 PM _unreal_: and other issues
08:23 PM _unreal_: time to go toss my tattor tots into the mic
08:24 PM _unreal_: curry chicken and tots what a combo
08:25 PM * roycroft is having grilled salmon with asparagus and porcini risotto tonight
08:34 PM perry_j1987: well looks like i wont be getting my pneumatic 5c chuck
08:35 PM CloudEvil: :/
08:49 PM XXCoder: refunded?
08:53 PM _unreal_: ?
08:53 PM _unreal_: I sware I didnt take it off of your porch
09:02 PM perry_j1987: they changed the listing
09:02 PM perry_j1987: and added individual collets and now said i only ordered an individual 5c collet lol
09:03 PM perry_j1987: sure...i spent THAT much on an individual collet
09:03 PM perry_j1987: of which there are no 5c collets in your product pictures just pneumatic chucks lol
09:07 PM unterhausen: was it from Amazon?
09:12 PM perry_j1987: aliexpress
09:12 PM XXCoder: dont they have orginial listing from date of your order?
09:12 PM XXCoder: i know ebay does
09:13 PM perry_j1987: the whole thing says over and over pneumatic 5c collet everywhere
09:13 PM perry_j1987: pictures of it and all
09:14 PM perry_j1987: not much i can do about it
09:14 PM perry_j1987: i'd have to cancel and add another thousand to my order to get one from them it seems lol
09:17 PM unterhausen: are you going to cancel?
09:17 PM perry_j1987: i havnt yet lol
09:17 PM perry_j1987: they keep trying to gaslight me making me think its just a listing for a 5c collet haha
09:20 PM unterhausen: I think a lot of those listings are people that go out and buy the thing after
09:22 PM CloudEvil: just send them the aliexpress transaction screenshot page
09:33 PM roycroft: unfortunately you cannot force them to send you what you paid for
09:33 PM roycroft: if they cannot convince you that you are mistaken about what you ordered, they will send nothing
09:34 PM roycroft: if you're lucky they'll refund your money
09:34 PM CloudEvil: Indeed.
09:34 PM roycroft: if not, you'll have to file a clame to recover it
09:34 PM CloudEvil: i scored a 5c collet chuck at 5c collet (actually 2) prices from amazon.
09:36 PM perry_j1987: i really wanted this pneumatic one hehh
09:38 PM snakedGT is now known as snaked
09:47 PM CloudEvil: https://pbs.twimg.com/media/E71EdLhVUAAifFJ?format=jpg&name=4096x4096
09:48 PM CloudEvil: 28 axis CNC.
09:48 PM CloudEvil: It does have linux on it. But not I suspect linuxcnc
10:07 PM perry_j1987: keep chasing burs from one orientation to the other
10:08 PM perry_j1987: trying to figure out how to do the best machine finish with the least amount of post processing heh
10:08 PM perry_j1987: may have to give up and throw them in the vibratory tumbler to debur heh
10:11 PM perry_j1987: i deff like the flood coolant the best
10:20 PM CloudEvil: Flash deburring is neat.
10:21 PM perry_j1987: what do you guys use to clean up afte going in vibratory tumbler
10:22 PM perry_j1987: all this dust is on the parts etc
10:52 PM roycroft: simple green in an ultrasonic cleaner
10:52 PM roycroft: which is what i use to clean most things
11:24 PM roycroft: the sunset was reddish, and now there is smoke in the air
11:24 PM roycroft: that cluster fire near here must be blowing my way