#linuxcnc Logs

Apr 01 2020

#linuxcnc Calendar

12:13 AM rue_mohr: why skunkworks?
12:18 AM rue_mohr: why "skunkworks"?
12:31 AM Centurion-Dan2 is now known as Centurion_Dan
01:29 AM Centurion-Dan2 is now known as Centurion_Dan
02:10 AM Loetmichel: mornin'
02:21 AM Centurion-Dan2 is now known as Centurion_Dan
02:50 AM Deejay: moin
03:16 AM Centurion-Dan2 is now known as Centurion_Dan
04:12 AM XXCoder: jthornton: sucks.
04:16 AM Centurion-Dan2 is now known as Centurion_Dan
04:37 AM pink_vampire: hi
04:38 AM XXCoder: hey
04:46 AM pink_vampire: hi XXCoder
04:46 AM XXCoder: i just got 5.5w laser
04:46 AM pink_vampire: COOL!!!
04:47 AM XXCoder: yeah. it can be turned on without machine by plug to cable thing
04:47 AM XXCoder: so I shined laser outside without lens
04:47 AM XXCoder: so blue
04:47 AM XXCoder: neighbor house turned blue!
04:47 AM pink_vampire: any news from the seller?
04:47 AM XXCoder: bad one? dunno
04:48 AM pink_vampire: can you control the power?
04:48 AM XXCoder: seperately yeah. though machine is untested, i need to assembly it later
04:49 AM XXCoder: btw thing about shining laser outside is not real
04:49 AM XXCoder: it'd get cops to me lol
04:50 AM pink_vampire: sure
04:51 AM XXCoder: https://www.aliexpress.com/item/32839405802.html
04:52 AM pink_vampire: try to cut only up to 70-80% of the power of the diode and keep is cool
04:52 AM XXCoder: its almost all heat sink and has fan
04:53 AM pink_vampire: "goggles as gift"
04:53 AM XXCoder: yeah im using goggles as camera protection later
04:53 AM XXCoder: not for my eyes i have better one
04:54 AM pink_vampire: nice
04:55 AM pink_vampire: can't wait to see you cutting something
04:55 AM XXCoder: :)
04:55 AM XXCoder: im making something later by layers
04:56 AM pink_vampire: try to cut ping pong balls
04:58 AM XXCoder: https://imgur.com/a/IKgm0PS lol
04:58 AM XXCoder: ping pong hmm into what?
04:59 AM pink_vampire: nice dumpster
04:59 AM pink_vampire: cut them in to smoke
04:59 AM pink_vampire: ping pong balls contain nitrocellulose
05:00 AM pink_vampire: nitrocellulose + laser = nitrocellulose gone in to smoke
05:00 AM XXCoder: lol
05:00 AM pink_vampire: https://www.youtube.com/watch?v=jne4NXJzqoI
05:01 AM XXCoder: wayy too much shaking
05:01 AM XXCoder: im noping out. i cant watch
05:02 AM pink_vampire: this is much better video https://www.youtube.com/watch?v=RzYoyXwL_A0
05:03 AM XXCoder: wow it dont leave much lol
05:03 AM pink_vampire: yeah
05:04 AM Centurion-Dan2 is now known as Centurion_Dan
05:17 AM jthornton: morning
05:17 AM XXCoder: hey jt
05:19 AM Tom_L: morning
05:20 AM XXCoder: hey tom
05:25 AM pink_vampire: XXCoder: what is the cnc controller?
05:25 AM XXCoder: my laser one? its grbl
05:26 AM pink_vampire: arduino?
05:26 AM jthornton: weather.gov predicted 39°F but it's only 44°F this morning
05:26 AM XXCoder: yeah
05:27 AM pink_vampire: do you know what chip?
05:27 AM pink_vampire: is that the nano?
05:29 AM Tom_L: 48°F
05:29 AM XXCoder: a second
05:30 AM pink_vampire: thanks
05:30 AM XXCoder: https://www.ebay.com/itm/1X-New-Wolike-Grbl-Usb-Port-Cnc-Engraving-Machine-Control-Board-2-Axis-Step1C5/174110319820
05:33 AM pink_vampire: Microprocessor:328P
05:33 AM pink_vampire: cool!
05:43 AM pink_vampire: XXCoder: https://youtu.be/nKCNEwH6C7w
05:43 AM XXCoder: looking
05:44 AM XXCoder: thats cool
05:45 AM XXCoder: combine with multicolors and https://www.free-mandalas.net/
05:45 AM XXCoder: make showstoppers ;)
05:46 AM pink_vampire: I have the SE400
05:47 AM XXCoder: cool :) my sis in law have a machine but it has no smarts.
05:47 AM pink_vampire: and I want to convert my serger machine to be a smart machine
05:47 AM XXCoder: like that video?
05:48 AM pink_vampire: no, one sec, I will draw it
05:53 AM XXCoder: wow this is very poor quaility tools. hes fixing em. https://youtu.be/EN_PHXlPJ0w
06:04 AM pink_vampire: XXCoder: this is what I want to do https://i.imgur.com/Htx88G5.png
06:05 AM Centurion-Dan2 is now known as Centurion_Dan
06:05 AM XXCoder: opto?
06:08 AM pink_vampire: there is 2 slotted optocouplers one is the limit for the UP needle position, and the other one is for the DOWN needle position,
06:08 AM XXCoder: ahh so it knows where it is at
06:10 AM pink_vampire: yes so you can click a button to move the needle up / down
06:55 AM Centurion-Dan2 is now known as Centurion_Dan
07:07 AM Loetmichel: *hmpf* selected 20k++ drills in CAD and pressed "boolean with sacrificial board"... CPU is calculating for 10 minutes now and showing no signs of being finished ;)
07:11 AM SpeedEvil: It's gotta sharpen all the drills every 100 holes.
07:28 AM Loetmichel: SpeedEvil: tungsten carbide mill bits/drill bits into pertinax. i doubt they will be dull
07:55 AM Centurion-Dan2 is now known as Centurion_Dan
08:42 AM Centurion-Dan2 is now known as Centurion_Dan
08:43 AM jymmmm: Good morning
09:06 AM Polymorphism: Hey all. I've been trying to get my CNC built for four years and a single issue has held me up. When I tighten the long axis ballnut mount to the cross member the screw gets bindy///crunchy. I finally decided to put some paper spacers under there which seems to pretty much solve it but the instructions didn't mention anything like that. Is this
09:06 AM Polymorphism: normal? Does anyone have any suggestions for this issue. More details available as needed
09:06 AM rue_mohr: hmm
09:07 AM rue_mohr: I have found you MUST only support a screw drive from one end
09:07 AM rue_mohr: the other end has to drift
09:08 AM jymmmm: "float"
09:08 AM Polymorphism: This design came as a kit and it has mounts on each end. The instructions state to run to one end tighten mount then run to other end. All is well after this but once I tighten the ballnut holder it starts to bind. I'm not sure what causes that but the side rail design is slightly quesitonable.
09:09 AM rue_mohr: http://ruemohr.org/~ircjunk/projects/cnc/p1100589.jpg
09:09 AM rue_mohr: my drive end is floating
09:09 AM rue_mohr: its captured on the left side
09:09 AM jymmmm: Polymorphism: I've have to use metal shims, and as rue_mohr mentioned, have one end "fix", the other end "floating" (basically as not to pull/push/bind the shaft
09:09 AM Polymorphism: I'll check now to see if thats possible with this design
09:10 AM jymmmm: Hi rue_mohr
09:10 AM Polymorphism: The machine is an xzero raptor
09:10 AM Polymorphism: https://i.ytimg.com/vi/gJ3mPKgSVow/maxresdefault.jpg
09:10 AM Polymorphism: like this
09:10 AM rue_mohr: jymmmm, hi low low hi
09:10 AM rue_mohr: how does that not shimmy
09:10 AM jymmmm: Polymorphism: we would need to see the shaft ends
09:11 AM jymmmm: Polymorphism: and that is VERY close to what I have
09:11 AM rue_mohr: it should have two drives...
09:11 AM Polymorphism: https://i.ytimg.com/vi/vxfsGCCNr2c/maxresdefault.jpg
09:12 AM Polymorphism: the end mounts sit in a machined flat pocket with some adjustment room
09:12 AM * rue_mohr rolls in his grave
09:12 AM jymmmm: Polymorphism: Ok, what's behind that little mounting block?
09:12 AM Polymorphism: nothing on one end, a hole for the flex coupling to come through to motor on the other end
09:13 AM jymmmm: Polymorphism: Nothing? not even a bearing?
09:13 AM Polymorphism: there is a bearing, yes
09:13 AM Polymorphism: in the block
09:13 AM jymmmm: Polymorphism: Is there a nut on the end of the shaft?
09:13 AM rue_mohr: tho you might have just suggested a fix for the Z on my new machine
09:13 AM jymmmm: rue_mohr: lol
09:13 AM Polymorphism: I don't remember and I just checked my machine I can't see the end right now
09:14 AM Polymorphism: my memory is that there was a nut to attach the bearing to the shaft though
09:14 AM Polymorphism: then the bearing sits in the block
09:14 AM jymmmm: Polymorphism: Could the end of the shaft be touching/binding against the plate the mounting block is screws into?
09:15 AM jymmmm: Polymorphism: IF there is a nut, it COULD be binding things up, or even too tight
09:15 AM rue_mohr: I'd be curious to survey how the linear bearings are doing on machines like this after a few thousand hours of operation
09:15 AM Polymorphism: the gantry moves smoothly with both end blocks tight
09:15 AM Polymorphism: once I tigthen the center ballnut mount thats when it binds up
09:15 AM Polymorphism: so it seems like the gantry height is somehow off
09:15 AM Polymorphism: its like its bowing the screw when I tigthten ballnut mount (just a theory)
09:16 AM rue_mohr: thrust plate on one end, floating on the other
09:17 AM rue_mohr: and all your linear axies are hard binding, which will wear out the linears...
09:17 AM jymmmm: Polymorphism: they could have a mounting block misaligned somewhere, so insted of everything bineg |||, it's more like |/|
09:17 AM Polymorphism: rue the design doesn't seem to use that system, I'm not sure how I would convert to that and ideally I would get it working as designed
09:17 AM rue_mohr: mhm
09:18 AM rue_mohr: one of each of the rods on each axis, should be allowed to float
09:19 AM rue_mohr: everyone seems to do whats pictured, I think when it wears out they just blame the bearings for it
09:19 AM Polymorphism: here is a shot of the X axis on an assembled machine: https://www.dzcues.com/cnc_build/2N2B8865a.jpg
09:20 AM rue_mohr: it looks like the front floats
09:20 AM rue_mohr: .. should still have two drives
09:21 AM rue_mohr: way too wide for one
09:21 AM Polymorphism: the model I have is 18"x35"
09:21 AM rue_mohr: mhm
09:21 AM rue_mohr: see the lathe?
09:21 AM rue_mohr: see how one side is ^ and the other _
09:21 AM rue_mohr: along the bed?
09:22 AM rue_mohr: thats casue its an anti-binding design
09:22 AM rue_mohr: the front can drift
09:22 AM rue_mohr: the back is the reference
09:22 AM Polymorphism: how can it drift?
09:22 AM rue_mohr: these machines are using two references, that, to _some_ degree, bind
09:23 AM rue_mohr: oh, cant see it eh? hmm, I'll write an article about it sometime
09:23 AM Polymorphism: with the mount bolts tight each end of the nut is retained completely
09:23 AM Polymorphism: yeah I don't fully understand what you mean
09:23 AM rue_mohr: http://ruemohr.org/~ircjunk/projects/cnc/p1100589.jpg
09:23 AM rue_mohr: see that axis there?
09:24 AM rue_mohr: the right side, is NOT captured, its in a bearing, but it can float left/right
09:24 AM Polymorphism: I see
09:24 AM rue_mohr: the left side of it is captured in a set of thrust bearings
09:25 AM rue_mohr: http://ruemohr.org/~ircjunk/projects/cnc/dscn7656.jpg
09:26 AM rue_mohr: the design before that used the motor as the thrust end, and left the other side floating
09:27 AM rue_mohr: and my _origional_ design did capture both ends, and they would bind like all hell
09:28 AM Polymorphism: hmm
09:28 AM rue_mohr: http://ruemohr.org/~ircjunk/projects/cnc4/slide.htm
09:28 AM rue_mohr: so my new_new machine avoided all that
09:28 AM rue_mohr: less the Y axis, which has binding sliders
09:29 AM rue_mohr: actaully I suppose all the siders are a bit funny on that one, but I was really tossing it by using 3d printed bushings
09:29 AM rue_mohr: which worked out really well....
09:31 AM rue_mohr: I didn't expect the bushings on the motor to wear out before the brushes :)
09:33 AM Polymorphism: the 3d printed bushings hold up well?
09:33 AM rue_mohr: so far!
09:34 AM rue_mohr: I didn't expect much of them
09:34 AM rue_mohr: but all the china machines are doing it, so I thought I'd give it a shot
09:34 AM rue_mohr: http://ruemohr.org/~ircjunk/projects/cnc6/slide.htm <-- the new new new machine is being a challenge
09:35 AM rue_mohr: my orig z axis idea is way too heavy
09:35 AM rue_mohr: and the spindle I got for it is a touch on the large side for the margins I left
09:36 AM SpeedEvil: Loetmichel: I was meaning the CPU had to sharpen the bits before using them again. :)
09:38 AM rmu|w: thank god it's first of april
09:38 AM rue_mohr: and even a work hardened stainless screw is no match for predrilled bedframe
09:41 AM ziper: what is a reasonable rate for CAD modelling and drawings?
09:43 AM rue_mohr: 28 things/year
09:45 AM SpeedEvil: Seems legit.
09:45 AM * SpeedEvil hires rue_mohr to fully model France.
09:49 AM ziper: sorry speedevil, turns out those things were emma maersks full of gold
09:50 AM ziper: which comes out to a meager 160 trillion
10:19 AM gregcnc: 160T is a decent rate
10:24 AM Tom_L: ziper, depends if you're doing CAD for a tractor firm or aircraft defense contract
10:24 AM ziper: tractor firm
10:24 AM gregcnc: in other words it depends on what you're actually doing
10:24 AM Tom_L: feel lucky if their check clears
10:25 AM Tom_L: also depends on your ability and swiftness
10:26 AM Tom_L: what could take one guy to draw in an hour might take another 15 min
10:26 AM gregcnc: but the customer doesn't know that
10:26 AM ziper: i think i'm pretty fast
10:27 AM Tom_L: no and i wouldn't tell but would base my cost on experience also
10:34 AM Tom_L: ziper, what cad do you use?
10:34 AM ziper: fusion 360
10:35 AM Tom_L: no serisously....
10:35 AM gregcnc: oh boy
10:35 AM Tom_L: :)
10:35 AM ziper: google sketchup
10:35 AM gregcnc: does F360 have decent detailing ability now?
10:36 AM Tom_L: i'm sure they're better than they were but i'm sure they're still playing catch up
10:52 AM Loetmichel: *HATZIEEEEEHHHH* ... no, not corna, pertinax dust from milling hardboard on the CNC mill. i just emtptied the Shopvac. WHAT a MESS!
11:54 AM CaptHindsight: rue_mohr: https://www.linearmotiontips.com/choose-end-fixity-conditions-screw-applications/
11:54 AM CaptHindsight: https://www.machinedesign.com/mechanical-motion-systems/linear-motion/article/21828146/the-importance-of-ballscrew-end-fixity
02:21 PM rue_mohr: I'm just saying to avoid fixed-fixed
02:35 PM miss0r: goodevening
02:37 PM miss0r: syyl: Are you around? Would you know of a Lathe called Shaoxing GH-1840ZX ? It has a decent reputation here in Denmark - do you know of it? (I am considering to buy one) https://www.okv.dk/Lagerliste/Drejebaenke/Shaoxing_GH-1840ZX
02:38 PM CaptHindsight: https://en.wikipedia.org/wiki/Anti-intellectualism
02:39 PM CaptHindsight: woops
02:43 PM gregcnc: missor seems like Jet sold those in the US but maybe not anymore?
02:44 PM CaptHindsight: yeah Jet
02:45 PM miss0r: hah. branded Jet or the same name?
02:45 PM gregcnc: branded Jet
02:45 PM gregcnc: same model number
02:45 PM CaptHindsight: https://www.jettools.com/us/en/p/gh-1440-1-lathe-with-newall-nms300-dro-collet-closer-and-taper-attachment/323389
02:46 PM CaptHindsight: https://www.jettools.com/us/en/p/gh-1880zx-with-acu-rite-303-dro/321595
02:47 PM miss0r: No reviews are popping up, it would seem
02:47 PM miss0r: I went to take a look at it at the vendor. From a machine repairman's point of view it seems quite sound
02:47 PM miss0r: but talking to someone who has actualy run one would be a treat
02:50 PM CaptHindsight: https://www.mscdirect.com/product/details/64280258 similar to Enco
02:50 PM CaptHindsight: I had one of these for a couple years
02:50 PM CaptHindsight: I would not buy one new or full price
02:51 PM CaptHindsight: not rock solid
02:51 PM gregcnc: with so many sources of what appear to be the same machines it's hard to say what your'e getting
02:51 PM miss0r: well.. I am looking for a new one. If I am going for used, i think I will find a CNC (Gildemeister Nef 320)
02:51 PM miss0r: Indeed
02:52 PM CaptHindsight: same or similar castings
02:52 PM miss0r: but the major issue with buying used CNC lathes is you can pretty buch bet it has ALOT of hours on it :)
02:52 PM miss0r: unless you are basically buying it for the same price as new
02:52 PM CaptHindsight: unless its a Hass or similar well made machine, I prefer used top tier over new Chinese
02:53 PM gregcnc: keep an eye out, you never know
02:53 PM miss0r: you consider Haas wellmade? :)
02:53 PM CaptHindsight: many hours on a good lathe is not a problem
02:53 PM CaptHindsight: unless they beat on it
02:53 PM gregcnc: depends if ways are worn
02:53 PM miss0r: that depends on how you define 'many' ;)
02:54 PM miss0r: well.. the "midrange" haas lathes are quite to flexible for my liking
02:54 PM CaptHindsight: what wears out if properly maintained?
02:55 PM CaptHindsight: bearings and motors
02:55 PM miss0r: they have (in my opinion) failed in using linear ball guides - which is not in itself a fail, but if you choose to do so on a lathe, you should choose some alot bigger than the ones they did
02:55 PM gregcnc: ways wear
02:55 PM miss0r: CaptHindsight: ways
02:55 PM miss0r: my main concern
02:55 PM XXCoder: miss0r: sometimes you get lucky
02:55 PM XXCoder: like mill shop that uses lathe only for tooling
02:55 PM miss0r: XXCoder: Looking forward to experiencing that ;)
02:56 PM gregcnc: https://rockford.craigslist.org/tls/d/freeport-haas-tl1-cnc-manual-lathe/7086763151.html
02:56 PM XXCoder: wonder if you could take a midrange and make it more rigid
02:56 PM CaptHindsight: if stored in lake what wears out?
02:56 PM miss0r: XXCoder: you can make anything more rigid.. but it will hardly be worth the efford :D
02:57 PM XXCoder: true
02:57 PM XXCoder: depends on the "holy trilogy" - price, quality, effort
02:57 PM miss0r: CaptHindsight: depends on the oxygen concentration at the bottom... :)
02:57 PM XXCoder: yeah I remember one stoprage that used distilled water, with oil protecting the top
02:58 PM miss0r: gregcnc: Yeah, I don't like that haas series. those linear guides are waay to slender
02:58 PM XXCoder: haas i dont really like those. but in least its not hurco
02:58 PM gregcnc: how big of cuts are you making?
02:58 PM miss0r: XXCoder: Hear Hear !!!
02:59 PM miss0r: gregcnc: Not nessesarily that big.. but those lathes are notorious for beeing sensitive to cutoff tools
03:00 PM miss0r: repairing machines I get to see alot of different designs. If everyone did like Kitamura or Mori Seiki.. that would be nice
03:00 PM gregcnc: are you buying now or in a month or two?
03:00 PM XXCoder: i got my 5.5w laser today. can't wait to fire this bad boy outside
03:01 PM miss0r: gregcnc: hmm.. I might wait a month or two.
03:01 PM gregcnc: right
03:01 PM miss0r: gregcnc: Because of this corona virus thing. A one-man operation like mine needs to think this stuff through
03:01 PM miss0r: i.e. if theres no work to be had for a while, I would be sad to have spend alot of my savings on a lathe
03:02 PM gregcnc: if there's no work, equipment may become available
03:02 PM miss0r: Indeed. Two reasons to wait a while
03:03 PM CaptHindsight: equipment at low prices that you can't use since there is no work
03:03 PM miss0r: yeah... :]
03:03 PM miss0r: but if it is cheap enough...
03:03 PM gregcnc: but if there is no note to pay
03:03 PM CaptHindsight: unless you find an area that always has work
03:03 PM CaptHindsight: healthcare is one
03:04 PM CaptHindsight: taking advantage of people is another
03:04 PM miss0r: CaptHindsight: For the time being I am booked to the point of madness.. But I will give it a few weeks
03:04 PM CaptHindsight: military
03:04 PM miss0r: I should get into alco-gel or toilet paper production
03:05 PM miss0r: heck. if I end up having nothing to do, I might as well scrape my old lathe back into spec
03:06 PM miss0r: if I get around to refurbishing the old lathe, I would only realy miss out on the 80mm spindle bore. I only have 35mm now
03:11 PM andypugh: miss0r: I would say that lathe seems to have a decent amount of iron in it at least. Decent bed depth and width
03:11 PM miss0r: the one I looked at clocks in at 2835kgs
03:11 PM andypugh: And a good big leadscrew
03:12 PM miss0r: Indeed, but again, speaking to someone who knows them first hand from use would be nice
03:12 PM andypugh: I suspect a typically short-rach tailstock though.
03:13 PM CaptHindsight: https://forum.linuxcnc.org/media/kunena/attachments/25865/xyzijk-xyzbc.txt
03:13 PM miss0r: yes.. only 150mm
03:13 PM andypugh: not so much the travel as where the centre point comes to.
03:14 PM miss0r: indeed, it *only* moves 150mm inside that bore, so the support is still nice.
03:14 PM andypugh: With my Chinese 9x20 the supplied tailstock centre could not reach within 50mm or where the tool edge was.
03:14 PM CaptHindsight: andypugh: ever work with XYZ IJK with LinuxCNC?
03:14 PM sync: miss0r: don't buy a gildemeister
03:14 PM miss0r: sync: Do tell :)
03:14 PM andypugh: CaptHindsight: No, but I have been vagiely following the forum discussion.
03:15 PM sync: don't you know?
03:15 PM syyl: dont buy a gildemeister nef
03:15 PM sync: they did not harden the bed
03:15 PM sync: so it is always worn
03:15 PM syyl: the bed on some of them is faulty hardened
03:15 PM miss0r: sync: that was only some of them, mind you :)
03:15 PM sync: that's what people say
03:15 PM sync: but all of the ones I have seen were clapped out
03:15 PM miss0r: yeah. They had some production issues.
03:16 PM andypugh: Lots of lathes had plain cast iron beds. Hardened beds didn’t come in until the 60s.
03:16 PM miss0r: syyl: What do you think of the Shaoxing one?
03:16 PM miss0r: andypugh: hehe yeah, but that was pre production CNCs...
03:16 PM syyl: looks like a generic taiwanese lathe
03:16 PM miss0r: syyl: Nah man.. I can't afford that. This is chinese :D
03:17 PM syyl: lol
03:17 PM syyl: it looks like a lot of iron
03:17 PM miss0r: but from rumours 'round here it has a decent rep
03:17 PM andypugh: I was about to say that Taiwanese generally means “pretty decent"
03:17 PM miss0r: 2835kgs...
03:17 PM syyl: i am not exactly an expert on large machines ;)
03:17 PM miss0r: syyl: I know. But I can't survice with a "toy lathe" as you put it.
03:18 PM syyl: ;)
03:18 PM miss0r: This is only a 1000mm model
03:19 PM miss0r: that being said, it takes up the same amount of space as my 1500mm one I have here now. The headstock on the Chinese one is huge
03:19 PM sync: idk I'd rather be looking for some cnc lathe
03:19 PM sync: we had one of those lathes in the university and it was ... ok
03:19 PM miss0r: sync: Yeah.. I am seriously considering it. But getting a decent cnc lathe for the same amount of money as this one is new is stretching it a big I think
03:20 PM sync: no, not really
03:20 PM miss0r: well.. I wouldn't want to spend half my time repairing it...
03:20 PM andypugh: https://www.ebay.co.uk/itm/293222994201
03:20 PM sync: you will spend half your time making the chinese lathe nice to run tho
03:21 PM miss0r: perhaps. I was at the vendor and looked at it firsthand. It looks and feels nice though
03:21 PM andypugh: Or if you want a longer one… https://www.ebay.co.uk/itm/202815869019
03:21 PM sync: oh, it does? ours felt very strange
03:21 PM sync: all of the controls felt off
03:21 PM syyl: :D
03:22 PM miss0r: sync: Oh? All the handles and wheels on this felt realy solid and smooth
03:22 PM sync: and the design choices when they threw the gears into the gearbox were also kind of strange
03:22 PM miss0r: andypugh: If I wanted an old lathe to turn random tapers, I would just keep my old one and just stop using way oil :D
03:23 PM andypugh: My cheap chinese 9x20 had the wierdest set of gears. It had a Norton-style quick change, but it still seemed that every different thread pitch needed a pick-off gear swap.
03:23 PM CaptHindsight: https://www.toolmex.com/machines/tur1550mn was looking at these a few years ago for a project
03:23 PM syyl: i had one of those too, andypugh
03:24 PM syyl: seemed great with a gearbox for the feeds
03:24 PM syyl: until i looked at the ratios
03:24 PM miss0r: andypugh: That is one thing I will never do again. I simply can't be bothered to swap gears :D I want levers for all of it
03:24 PM CaptHindsight: http://www.romiusa.com/heavy-duty-lathes/
03:24 PM andypugh: Electronic Leadscrew then.
03:24 PM syyl: thats what i did
03:25 PM syyl: and then i sold the whole thing
03:25 PM miss0r: syyl: The second it was useable :P
03:25 PM syyl: lol
03:25 PM syyl: yes
03:25 PM syyl: but the super11 is so much nicer
03:25 PM syyl: <3
03:25 PM miss0r: damn it has gotten later than I planned. I will call it a night
03:25 PM miss0r: See you around. Keep me posted if you find a nice cnc lathe not too far from Denmark ;)
03:26 PM syyl: :D
03:26 PM miss0r: Cya
03:26 PM syyl: gn8
03:26 PM CaptHindsight: andypugh: all nylon gears as well?
03:26 PM sync: that's actually not too bad tho
03:27 PM andypugh: CaptHindsight: I have blanked it from my mind. It went CNC very soon after purchase, as was always the plan.
03:27 PM CaptHindsight: I've gotten some good deals on lathes with broken gears
03:28 PM CaptHindsight: $50 in parts and saved $K's
03:28 PM SpeedEvil: I guess the assumption is 'what else did they break'
03:28 PM CaptHindsight: usually one thing and they give up
03:29 PM CaptHindsight: since they are machinists
03:36 PM Rab: Zamak --> dustbin
03:36 PM Rab: (Or eBay)
03:37 PM * SpeedEvil wishes he could get some zamak.
03:48 PM CaptHindsight: https://www.youtube.com/watch?v=DBvQjTm9EE8
03:48 PM CaptHindsight: Lathe chuck : 50+ gram out of balance
04:01 PM Deejay: gn8
04:06 PM CaptHindsight: https://geekflare.com/open-source-load-balancer/
04:07 PM CaptHindsight: ^^ these don't work for machines
04:07 PM gregcnc: do you need to balance something?
04:10 PM CaptHindsight: was looking for open source apps for dyanamic balancing
04:11 PM gregcnc: did you find any?
04:11 PM CaptHindsight: Google was confused
04:11 PM gregcnc: I couldn't but ti's been a while
04:12 PM TurBoss: what about pfsense?
04:12 PM TurBoss: or opnsense
04:12 PM CaptHindsight: http://www.rcfair.com/en/blogs/view_entry/12652/
04:14 PM gregcnc: what the RC guys call dynamic balancing usual isn't
04:15 PM SpeedEvil: Just hook four RC servos to weights on the chuck.
04:15 PM SpeedEvil: remember to unhook the charging lead before turning on the spindle.
04:15 PM DaViruz: it's very common to call two plane balancing dynamic balancing, but strictly speaking, they are not the same
04:16 PM gregcnc: oh how does it differ?
04:17 PM DaViruz: i'd say static versus dynamic balancing has to do with whether you actually rotate the thing or not
04:17 PM DaViruz: rather than how many balancing planes you use
04:17 PM CaptHindsight: gregcnc: looks like most use a smartphone app
04:17 PM gregcnc: all balancing texts disagree
04:17 PM DaViruz: though i usually call two plane balancing dynamic balancing as well
04:17 PM gregcnc: static vs dynamic is all there is
04:18 PM gregcnc: and is equal to single or dual plane
04:18 PM gregcnc: let me excavate a link
04:18 PM SpeedEvil: gregcnc: dynamic in principle varies with RPM if the thing changes shape
04:18 PM gregcnc: balancing a noodle is a shitty job
04:18 PM DaViruz: gregcnc: yes i knwow
04:19 PM DaViruz: know*
04:19 PM DaViruz: i guess i'm arguing semantics
04:19 PM gregcnc: something bending is a different problem
04:20 PM CaptHindsight: accelerometer + position sensor + oscilloscope + trial and error
04:20 PM gregcnc: https://forums.ni.com/t5/Example-Code/Two-Plane-Balancing-Example-with-DAQmx/ta-p/3996066?profile.language=en#toc2
04:21 PM DaViruz: there is a method called the three point method which is pretty effective if you have an accelerometer
04:21 PM CaptHindsight: use Linuxcnc with an accelerometer
04:21 PM DaViruz: it doesn't require the measurement of phase angle which makes it less reliant on specific equipment
04:22 PM DaViruz: you basically run the thing three times and measure vibrations, each time with a known weight placed at three different points
04:23 PM Centurion-Dan2 is now known as Centurion_Dan
04:25 PM CaptHindsight: TurBoss: another QTPY widget: machine balancer :)
04:26 PM DaViruz: most live balancing equipment i've seen has used chambers that liquid is pumped between in some manner
04:26 PM DaViruz: seen it on a couple of cylindrical grinders for roll mill rollers
04:26 PM CaptHindsight: looks like you're to use the smartphone app that tracks you
04:29 PM CaptHindsight: https://www.eevblog.com/forum/projects/diy-dynamic-wheel-balancer-mark-2/?action=dlattach;attach=181488;PHPSESSID=d0ad9mvl37fcchj6ggn2npmj75
04:29 PM gregcnc: this hobby device will do dual plane. https://dynexhobby.com/index.html
04:30 PM gregcnc: I've not used it, but I use a similar software
04:31 PM DaViruz: that's remarkably reasonably priced
04:33 PM gregcnc: the software I use reads accelerometer and position via stereo mic input
04:33 PM CaptHindsight: didn't realize how secretive everyone is about the software until now
04:36 PM gregcnc: it's magic
04:38 PM _unreal_: pcw_mesa, hi
04:40 PM _unreal_: disney must be loving this shut down :)
04:40 PM gregcnc: ?
04:41 PM _unreal_: well at least I got to go on the new starwars ride :)
04:41 PM _unreal_: took my daughter last month
04:42 PM CaptHindsight: Pandemic - The Ride
04:42 PM _unreal_: pandemic L...O...L...
04:43 PM CaptHindsight: invisible nanoparticles are flung through the environment that can possible harm you, will you make it out alive?
04:43 PM _unreal_: 100,000 tested positive since nov... 6 months. and its the end of the road? yet H1N1 had 40million
04:44 PM _unreal_: IN the usa alone
04:44 PM gregcnc: they needed to do this to get 5G into the schools
04:44 PM CaptHindsight: every man for themselves
04:45 PM CaptHindsight: all for one and one for one
04:46 PM _unreal_: so wreck the world economey, destory 10million peoples lives... cause thouses of deaths do to stress/physic issues.
04:46 PM CaptHindsight: yeah
04:46 PM CaptHindsight: just fight it out in the streets
04:46 PM _unreal_: I'm going to make a prediction. 400,000 AT MOST positive cases in the usa
04:46 PM CaptHindsight: money is more important
04:46 PM _unreal_: 8000 deaths 99% pre existing conditions with health
04:46 PM _unreal_: and mostly elderly
04:47 PM gregcnc: wtf is the story about UK getting infected test kits?
04:47 PM CaptHindsight: could be a TV show, Virus Battle
04:47 PM gregcnc: that's happening everywhere every social media platform
04:48 PM CaptHindsight: 10 people in a pit, one vial of vaccine, who will win?
04:48 PM _unreal_: gregcnc, us government members of the senate and house have been caught TRYING to get the H1N1
04:48 PM _unreal_: err corona sorry
04:48 PM _unreal_: CaptHindsight, thats easy. the republican
04:49 PM gregcnc: what's the story?
04:49 PM _unreal_: concealed license to carry
04:49 PM _unreal_: :)
04:49 PM CaptHindsight: nah they would be whining about being a single parent to do anything
04:49 PM _unreal_: gregcnc, one sec
04:50 PM _unreal_: gregcnc, one source https://www.youtube.com/watch?v=DSAYyWKd9Og&t=35s
04:50 PM _unreal_: there are a few other stories same thing with different house and senate members
04:52 PM gregcnc: so who is trying to get it in this case? i'm not well versed in this conspiracy theory
04:53 PM CaptHindsight: Aliens
04:54 PM CaptHindsight: the truth spaceship landed here to expose all this
04:55 PM CaptHindsight: https://www.youtube.com/user/TheOnion is where I get my news
04:56 PM skunkworks: http://electronicsam.com/images/greenmachine/2020-04-01-165305_1920x1080_scrot.png
04:57 PM andypugh: Now let’s see the the rotary-broach weenies do that one!
04:58 PM andypugh: You can make pasta dies.
04:58 PM Rab: On the Clausing list, people are discussing making a steady rest from a cast iron barbell weight. Anybody tried exercise equipment for cast iron stock?
04:58 PM andypugh: No, really, you can make pasta dies cheaper than anyone else :-)
04:58 PM andypugh: Rab: I have definitely considered it.
04:58 PM gregcnc: I've read it's crappiest of can you can find, but sometimes you get lucky
04:59 PM gregcnc: can = cast
04:59 PM andypugh: But I am not 100% sure they are always iron. Sometimes maybe epoxy-iron like the weights in Ikea lamps.
05:00 PM Rab: There is one rumored anecdote of success, and one anecdote of a dumbell too hard to cut with carbide.
05:02 PM CaptHindsight: what to do with 100 wooden pallets?
05:02 PM skunkworks: andypugh: i bet this has a lot of uses.. i just dont know :)
05:02 PM CaptHindsight: in various shape from grey and moldy to brand new
05:02 PM Tom_L: firewood
05:02 PM the_ment: CaptHindsight: you can furnish a hipster restaurant
05:03 PM andypugh: https://www.youtube.com/watch?v=qSjhjaN5zKI
05:03 PM gregcnc: haul them away https://www.youtube.com/watch?v=g2WJevZWcsA
05:04 PM andypugh: (that was a pallet suggestion that video)
05:04 PM Rab: Sell them for DIY reclaimed wood headboards...don't mention the toxic fumigants.
05:04 PM CaptHindsight: hah that5 is great
05:04 PM andypugh: Where the COlin Furze phenomenon started.
05:06 PM Centurion-Dan2 is now known as Centurion_Dan
05:14 PM CaptHindsight: somebody left a 20ft long custom pallet in the hall
05:14 PM CaptHindsight: they must have dragged it off the truck
05:14 PM CaptHindsight: 20ft x 2.5ft
05:15 PM CaptHindsight: now I'm wondering what was on it
05:15 PM Rab: Srs chicken coop ramp.
05:29 PM t4nk_freenode: CaptHindsight, just got a message that my return has been accepted; I'm getting my money back for the beamer :))
05:29 PM t4nk_freenode: glad, because the lag was really unacceptable,
05:30 PM t4nk_freenode: and very sad for not having a beamer
05:30 PM t4nk_freenode: ..gonna see about another one soon though
05:31 PM jdh: what's a beamer
05:32 PM skunkworks: only beamer i know of is bmw
05:49 PM Centurion-Dan2 is now known as Centurion_Dan
06:00 PM _unreal_: very pissed off at my self
06:01 PM _unreal_: I started zip tieing the main motors wire harness
06:02 PM andypugh: Well, I hope you are ashamed of yourself
06:02 PM _unreal_: and forgot a wire
06:02 PM * _unreal_ holds out hand
06:02 PM andypugh: Harness wrapping is the only way control wires for a gentleman.
06:03 PM _unreal_: I picked the thinnest lightest stick I could find
06:04 PM andypugh: https://photos.app.goo.gl/NCbKsKucv3U5XaSQ8
06:04 PM andypugh: https://photos.app.goo.gl/aQJ42W7vUtyY2yXa7
06:04 PM Tom_L: _unreal_, i usually leave them a bit loose until all done
06:04 PM _unreal_: andypugh, I'm waiting on my mesa
06:04 PM andypugh: Just tell me you didn’t use Panduit
06:05 PM _unreal_: the tracking says arriving tonight """"
06:05 PM _unreal_: panduit?
06:05 PM _unreal_: Tom_L, really.....
06:05 PM _unreal_: think I'd think that far ahead
06:05 PM _unreal_: hhe
06:05 PM andypugh: https://www.alliedelec.com/product/panduit/f1-5x4lg6/70333449/
06:06 PM Tom_L: oh that stuff looks lovely
06:06 PM andypugh: <Puts serious head on>
06:06 PM _unreal_: ahhhhh.... ya that stuff
06:06 PM Tom_L: not
06:06 PM _unreal_: Tom_L, that shit is in EVERY fucking boat I work on
06:06 PM _unreal_: breaks like nothing
06:07 PM _unreal_: they always put the crap in areas where you going to lean on it or step on it mainly in the engine room
06:07 PM _unreal_: never fails
06:07 PM unterhaus: andypugh, I have some wax harness wrap from the old days
06:07 PM andypugh: Panduit is the most flexible and practical solution. Harness wrapping is just silly, but makeit look like you cared.
06:07 PM Tom_L: andypugh, where's the RTAI you worked on located?
06:07 PM Tom_L: the 'new' one
06:07 PM _unreal_: andypugh, I got the mesa 7i96
06:07 PM andypugh: www.linuxcnc.org/temp
06:08 PM Tom_L: tested?
06:08 PM andypugh: But it’s just a compile and package of https://github.com/NTULINUX/RTAI
06:08 PM _unreal_: oh ya
06:08 PM andypugh: Alec did all the clever stuff.
06:08 PM _unreal_: florida just went FULL shut down
06:08 PM _unreal_: hehe
06:08 PM _unreal_: and I'm STILLLLLLLLL
06:08 PM Tom_L: and you're still not listening
06:08 PM unterhaus: what's different between that an the one on the ISO?
06:09 PM _unreal_: considered in the essential range
06:09 PM Tom_L: unterhaus, i believe the stretch iso is preempt-rt
06:09 PM andypugh: unterhaus: Which ISO
06:09 PM unterhaus: the mint iso from the forum
06:09 PM andypugh: I think that at least one of those is using the same ISO
06:10 PM unterhaus: there is a preempt and a rtai
06:10 PM Tom_L: andypugh, are those stretch iso images?
06:10 PM andypugh: Sorry, I mean same kernel
06:10 PM unterhaus: okey
06:11 PM andypugh: Tom_L: No, linuxcnc/temp is just a set of kernel debs and matching linuxcnc. Probbaly suitable for any recent Linux (Buster / Ubuntu wherever they are / Current Mint)
06:12 PM Tom_L: ok
06:12 PM andypugh: Then on the Forum Rob has built a set of Mint ISOs using preempt RT or RTAI
06:13 PM andypugh: (I think the forum got mored of there being no official 2.8 release. It has been several years)
06:13 PM Tom_L: yeah a bit too long
06:13 PM Tom_L: but...
06:14 PM Tom_L: i think several are using it though
06:22 PM _unreal_: hum
06:22 PM _unreal_: Tom_L, one of the things I want to do when I get the thing setup is to go read only as far as my lcnc install
06:22 PM Tom_L: why?
06:23 PM _unreal_: just want to minimize the chance of software issues
06:23 PM Tom_L: just keep a backup of the config
06:23 PM Tom_L: some of it gets put in root access directories anyway
06:24 PM Tom_L: i think the bit files are
06:24 PM Tom_L: for the mesa card
06:24 PM _unreal_: hum
06:24 PM _unreal_: heh
06:24 PM _unreal_: ya the tracking says """""""" arriving tonight BS
06:24 PM _unreal_: never works that way
06:24 PM Tom_L: which card did you get?
06:26 PM Tom_L: yeah, i put the bit files in /lib/firmware/hm2/7ixx/ whatever your card is
06:28 PM jthornton: should have ordered from me I ship on Saturday and you would have had it yesterday
06:29 PM Centurion-Dan2 is now known as Centurion_Dan
06:38 PM jthornton: someone needs to block that guy
06:39 PM Tom_L: bad connection
06:39 PM jthornton: yea
06:42 PM jthornton: how's it going in KC
06:43 PM Tom_L: i'm avoiding them
06:43 PM jthornton: good plan
06:43 PM Tom_L: i hear they're on full shutdown
06:43 PM jthornton: I go to town when others don't like early in the morning
06:43 PM Tom_L: i'm in ICT
06:43 PM jthornton: ICT?
06:43 PM Tom_L: wichita
06:43 PM jthornton: ah
06:44 PM jthornton: dunno why I thought you were in KC
06:44 PM Tom_L: and most things are shut down here
06:45 PM jthornton: hmm you're about the same distance from KC as Joplin
06:45 PM Tom_L: sounds about right
06:46 PM Tom_L: went to Savannah couple weeks ago and came back early
06:46 PM jthornton: yea, I remember
06:46 PM Tom_L: visited a bit but things were shutting down there too
06:46 PM jthornton: we had a 10 day trip planned but we canceled that
06:46 PM Tom_L: St Pat's parade was cancelled there
06:47 PM Tom_L: came home and stocked up on things and just waiting now
06:48 PM jthornton: yea the TP hording caught me by surprise but managed to stock up on everything that is shelf stable
06:49 PM jthornton: I even found a couple of N95 3M masks at Menards the other day
06:49 PM jthornton: I'm damn glad I live out in the boonies lol
06:50 PM Tom_L: i bet
06:50 PM Tom_L: only bad thing is you're probably limited on where you get stuff
06:53 PM jthornton: actually I can get most anything except stuff like you might find at woodcraft or specialty places
06:54 PM jthornton: chow time here
07:16 PM Centurion-Dan2 is now known as Centurion_Dan
07:17 PM -!- #linuxcnc mode set to +v by ChanServ
07:28 PM unterhaus: florida is going to be a horror story in a week or 2
07:41 PM JavaBean: hasn't florida been a "horror story" for 50+ years?
07:42 PM gregcnc: https://floridaman.com/
07:42 PM CaptHindsight: depends a lot on how you were raised, one mans paradise is another mans hell
07:51 PM CaptHindsight: https://www.theguardian.com/australia-news/2020/mar/30/astrophysicist-gets-magnets-stuck-up-nose-while-inventing-coronavirus-device
07:57 PM skunkworks: when you are rotating a polygon - make sure you also rotate the tool direction
08:15 PM Centurion-Dan2 is now known as Centurion_Dan
09:05 PM Centurion-Dan2 is now known as Centurion_Dan
09:41 PM Centurion-Dan2 is now known as Centurion_Dan
10:28 PM Centurion-Dan2 is now known as Centurion_Dan
10:55 PM flyback: https://www.amazon.com/Happybuy-Turbine-Generator-Vertical-Controller/dp/B07CGKW3K9?th=1
11:01 PM Centurion-Dan2 is now known as Centurion_Dan
11:16 PM Tom_L: anyone ever try mapping an axis?
11:27 PM skunkworks: not I... always wanted to... never really had dro type equipment
11:28 PM Tom_L: i thought about using the axis dro and a dial indicator
11:29 PM Tom_L: i wonder how stuart did the cinci
11:44 PM Tom_L: i also need to work on my MPG code and figure out why it's slightly off
11:44 PM Tom_L: might be ilowpass
11:53 PM Centurion-Dan2 is now known as Centurion_Dan