#linuxcnc Logs

Jul 06 2020

#linuxcnc Calendar

02:44 AM Loetmichel: maaan, german work ethic.. my ass. the roofers just came and asked for 3 phase 16A.. so i said: "IIRC there are a couple red outlets in the cellar at the main fuse panel.".. him: "i already tried, no power on those!"... so i opened the fuse panel: everything correctly wired to the fuse blocks... even a bridge between the two fuse blocks... but no feed from the main fuse to the fuse blocks?
02:50 AM Loetmichel: Was it 17:00 when the electrician came to that?? $me had to get some earth cable (the only one i had in 16mm^2, we are a computer company), clad it with some black shrink tube and install the feed... :-(
02:50 AM XXCoder: well they did work hard
02:50 AM XXCoder: ah not those guys but someone who did electrics while ago
03:23 AM pink_vampire: http://www.metallmodellbau.de/Kleinfraese-Eigenbau.php
03:24 AM XXCoder: buying one?
03:30 AM matic292: pink_vampire: max - 3000 U/min thats RPM of endmill or motor?
03:31 AM pink_vampire: U/min?
03:32 AM matic292: i think thats RPM ... its says on webpage U/min :)
03:52 AM rmu|w: anybody (in europe) in need of a mitutoyo 3d CMM? 900×1000×600mm, up for auction, didn't make minimum bid (59k) last time
03:53 AM rmu|w: now at 5k5, i wonder what price it will fetch. 24h to go...
03:55 AM rmu|w: link if somebody is interested, no affiliation. https://www.oevg-versteigerungen.at/odetails.php?oid=881&pid=407465
04:13 AM Loetmichel: rmu|w: a bit out of my priceleague... for one tenth of the current bid i would be tempted :-)
04:33 AM pink_vampire: rmu|w: if it come with a box it will be larger then my house
04:34 AM XXCoder: pink your house is that tiny?
04:34 AM XXCoder: it'd have to be smaller than my closet and its not large one lol
04:39 AM XXCoder: pink your house is that tiny?
04:39 AM XXCoder: it'd have to be smaller than my closet and its not large one lol
04:41 AM pink_vampire: yes
04:41 AM XXCoder: lol ok
04:41 AM pink_vampire: ny ide how to mke the font larger in kvirc
04:42 AM pink_vampire: idea
04:42 AM pink_vampire: make*
04:44 AM XXCoder: and I guess *any too ;)
04:44 AM XXCoder: anyway dunno I use hexchat
04:44 AM XXCoder: im pretty sure theres font settings
04:47 AM pink_vampire: test
04:47 AM pink_vampire: still small
05:03 AM XXCoder: changed font size?
05:22 AM JT-Cave: morning
05:23 AM XXCoder: yo
06:08 AM rmu|w: Loetmichel: new this thing is like 100k
06:08 AM rmu|w: and it's one year old
06:10 AM Loetmichel: rmu|w: i know... still outside my budget ;)
06:37 AM Tom_L: morning
06:54 AM pink_vampire: hi
07:03 AM pink_vampire: yes, it was for the other computer
07:03 AM pink_vampire: now I'm back to normal
07:03 AM JT-Cave: usually the windows manager controls that which is actually quite annoying
07:07 AM pink_vampire: any good video about boring small holes on the lathe?
07:32 AM JT-Cave: holy shit batman I've got sound working on the Rpi with gstreamer
07:36 AM Tom_L: wtf did you do wrong?
07:40 AM JT-Cave: didn't do anything wrong, just finally figured out what libraries needed to be installed
07:53 AM JT-Cave: need to find a micro SD card and do it again to make sure I have the instructions correct
08:33 AM Centurion-Dan2 is now known as Centurion_Dan
10:38 AM Tom_L: JT-Cave, making another howto?
10:38 AM Tom_L: those are rather helpful for the rest of us
10:45 AM JT-Cave: yea
10:46 AM Tom_L: should get some cutters today
11:17 AM JT-Cave: changing the calipers today on Rusty
11:17 AM Tom_L: fun
11:17 AM JT-Cave: not bad actually
11:21 AM Tom_L: better than muffler work
11:22 AM JT-Cave: you got that right
11:30 AM JT-Cave: https://jethornton.github.io/rpi/lite-install.html
11:30 AM JT-Cave: does that read ok?
11:34 AM Tom_L: skimming thru it, it looks ok
11:35 AM Tom_L: first time i did it, i was a bit confused why the user pia but it makes sense now
11:37 AM Tom_L: (from the gnipsel uspace one)
11:39 AM Tom_L: i think...
11:44 AM Tom_L: "During COVID-19 we are asking rioters to work from home and destroy their own shit"
12:25 PM SpeedEvil: Various research has failed to find upticks driven by protests.
12:26 PM SpeedEvil: https://docs.google.com/spreadsheets/u/1/d/1YmZeSxpz52qT-10tkCjWOwOGkQqle7Wd1P7ZM1wMW0E/htmlview?pru=AAABcql6DI8*mIHYeMnoj9XWUp3Svb_KZA also i note
12:44 PM CaptHindsight: nah the virus was gone back in April, just ask the fearless leader
12:47 PM rmu|w: jr
12:47 PM rmu|w: JT-Cave: why do you recommend ISO8859-1 locale?
12:48 PM Tom_L: probably where he's from
12:50 PM rmu|w: ISO8859-1 specifies the mapping of characters to byte-values, and can only use 128 + ASCII.
12:51 PM rmu|w: IMO everything that is not UTF-8 is a bug and needs to die, especially on new installs
12:52 PM Tom_L: does it have UTF-8 option? i can't remember off hand
12:52 PM rmu|w: it should have
12:52 PM Tom_L: yeah i agree but can't remember
12:53 PM rmu|w: usual desktop systems use UTF-8, so if you want to exchange files that have non-ascii-characters (e.g. via memory stick) in them you don't want to mix iso8859-1 and utf-8
12:53 PM rmu|w: that is linux desktop systems
12:56 PM veegee: Ok so random question as always. I need to build a short ventilation shaft into which all 9 portable ACs can vent their exhaust into
12:56 PM veegee: They all use standard 4" hose duct
12:56 PM veegee: I'm thinking of making a rectangular manifold and cutting holes in it to plug in each of the hoses, but I'm pretty sure there's a much better standard way
12:57 PM veegee: like prebuilt interconnecting 4" circular takeoff sections
12:57 PM veegee: I don't know anything about ducts and stuff so not sure what the easiest way to go about this
12:57 PM CaptHindsight: what length total?
12:58 PM rmu|w: veegee: it sounds like you would want a pipe instead of a shaft?
12:58 PM veegee: about 3 meters
12:58 PM veegee: pipe/shaft doesn't matter
12:58 PM veegee: the purpose is to connect all 9 exhaust pipes into a single pipe which then vents outside
12:58 PM CaptHindsight: vertical?
12:58 PM rmu|w: ok. non-native speaker
12:58 PM veegee: horizontal is easier
12:59 PM veegee: I also have blower fans to assist with moving all that air on the output side of the main shaft but that's easy enough to connect
12:59 PM veegee: so a single horizontal manifold with 9 circular cutouts or takeoff points onto which I can clamp each AC's exhaust hose
01:00 PM Tom_L: i personally would angle them toward the final opening
01:02 PM veegee: That would be ideal, but I have very high flow centrifugal blowers and I'll use one of them to create negative pressure in the manifold so it won't be an issue whatsoever
01:02 PM rmu|w: veegee: what do you aim for? as cheap as possible? hard to imagine there isn't "proper" venting duct readily available in appropriate sizes...
01:02 PM veegee: The industrial unit is rectangular, so I'm mounting the ACs about half way up the wall on the long side and spacing them out
01:03 PM veegee: rmu|w aiming for as quick and easy as possible
01:03 PM veegee: like if there were a premade duct like that, I'd insta buy it
01:03 PM veegee: but went to the local home depot, didn't find anything. But it was a smaller store. I'll try a larger one
01:04 PM Tom_L: you figure how much area you need?
01:04 PM veegee: It's a vent shaft that's about 3m in length, no need to penny pinch
01:04 PM rmu|w: hmm. here (in europe) i would go to my local tinsmith (?) and get ducts in the proper size...
01:04 PM veegee: Tom_L area in terms of what? like main manifold diameter?
01:05 PM Tom_L: yeah but if you're putting a fan on it, that may not be as critical
01:05 PM veegee: indeed
01:05 PM veegee: You know in every action movie ever, the guy crawls through a vent duct and then jumps on an unsuspecting enemy?
01:05 PM veegee: That's the kind of vent duct I'm imagining. Like that size or less
01:06 PM veegee: Even that may be unnecessarily large. But that's the idea, just a main manifold with easy circular takeoff points so I don't have to cut holes myself
01:06 PM veegee: Just want to be able to mount the hose on a takeoff point and put a hose clamp on there and be done with it
01:06 PM Tom_L: 113 sq in i think
01:07 PM veegee: It's just that I don't know where to acquire such a thing
01:07 PM Tom_L: tin shop
01:07 PM Tom_L: sheet metal supply
01:07 PM Tom_L: locke supply
01:07 PM veegee: Alright I'll look around, thanks!
01:08 PM Tom_L: some hvac supply
01:08 PM veegee: yeah HVAC supply is most promising
01:10 PM veegee: As for shop lighting, I'm going to go for a large number of 4000K LED lights in regular light bulb format
01:11 PM veegee: I'm aiming for minimum shadows and lots of diffusion and light coming from all angles
01:11 PM JT-Shop: Tom_L, thanks for skimming through it
01:12 PM veegee: or anyone have recommendations for a better solution?
01:13 PM veegee: Aiming for lots of light everywhere
01:15 PM Tom_L: paint the walls white
01:23 PM Tom_L: add skylights, those are free light after installation
01:27 PM Rab: And in some cases, free water!
01:27 PM Tom_L: ya gotta take a shower once in a while
01:31 PM veegee: Yeah I'm putting in a shower
01:31 PM veegee: There's so much space in the workshop, I have a crash pad there. I'm treating it as an apartment
01:32 PM veegee: Walls are already white
01:32 PM veegee: Another unrelated random question: where can I get syringes for use with oil? All the medical syringes have rubber plungers that seize up with any oil other than silicone/o ring oil
01:32 PM CaptHindsight: ducts-r-us
01:33 PM veegee: Even hair clipper mineral oil will cause them to swell and seize up after a few days
01:33 PM veegee: so annoying
01:34 PM veegee: I just need them in standard medical syringe 10mL sizes
01:35 PM Rab: veegee, those exist. This is just the first link I found: https://www.fishersci.com/shop/products/national-target-all-plastic-disposable-syringes/p-4525984
01:36 PM veegee: Rab and oil won't leak past the relatively thin plastic plunger?
01:36 PM Tom_L: check e-sig outlets too
01:36 PM Rab: I have some I stole from a lab I worked in probaby 25 years ago. I've stored oil and other compounds in them for years.
01:36 PM Tom_L: they might have them
01:36 PM veegee: Tom_L excellent idea, will do. These addict shops are everywhere around here
01:36 PM Tom_L: https://www.amazon.com/Pack-Industrial-Liquids-cigs-Juice/dp/B0161V0024
01:36 PM Rab: veegee, the plunger is slightly larger than the barrel, creating a hermetic seal.
01:37 PM veegee: Tom_L yeah my syringes look exactly the same. That black rubber part is what swells and disintegrates and somehow manages to seize up and contaminate the oil with small particles of rubber
01:37 PM veegee: Water-based fluids are fine
01:37 PM veegee: hydrocarbons dissolve it
01:38 PM veegee: I wonder what kind of seals hydraulic cylinders use
01:38 PM Tom_L: various
01:39 PM Rab: Hydraulic seals degrade over time, depending on the oil used.
01:40 PM veegee: But definitely not in a few days like my syringes
01:40 PM veegee: those plastic ones look the most promising
01:43 PM Rab: I don't see many sources for the all-plastic kind. ThermoFisher's suggested application is "industrial chromatography", which is indeed where I found them used...better not lose the ones I've got, I guess.
01:45 PM CaptHindsight: veegee: Nordson
01:46 PM CaptHindsight: https://www.nordson.com/en/divisions/efd/products/syringe-barrels-and-cartridges
01:46 PM CaptHindsight: a selection of piston materials
01:47 PM CaptHindsight: we use them for all sorts of solvents and non-polar liquids
01:48 PM Rab: McMaster-Carr carries dispensing guns which have a brass plunger and a replaceable buna o-ring. They also sell silicone and other oil-resistant o-rings. https://www.mcmaster.com/1397N1/
01:48 PM CaptHindsight: check ebay for overstock and Chinese knock-offs
02:14 PM veegee: Excellent, thanks guys
03:26 PM Connor: Hey guys, meant to tell you all. I started a YouTube machining channel.. So far, just manual milling and a tour of the shop, but, when I get the CNC up, I'll do some on that too.
03:26 PM Connor: https://www.youtube.com/channel/UCkkS3mS6396xbrUITYvFwyg
04:16 PM Tom_L: lakeshore makes some nice cutters
04:17 PM Tom_L: 1st time ordering from them..
04:29 PM pink_vampire: Connor: NICE!
04:30 PM Connor: Thanks.
04:31 PM Connor: Need to do some turning operations on the screw for that float lock vise and get Part 3 up. I didn't like how the first one turned out.. so, redoing it.
04:32 PM Connor: Also having issues with the collet closer on that lathe. It doesn't "snap" correctly.. I'm not sure what the deal is with it.. I've never used one before. Always used collet chucks or a draw tube style. This one is draw tube with a lever on it..
05:34 PM andypugh: Connor: It sounds like it is adjusted too tight to snap over the cam.
05:35 PM Connor: Yea, I've tried to adjust it back and forth and no matter what I do I can't get it to snap over the cam. it's used.. and I'm wondering if maybe the cam is rounded, or something is broken..
05:35 PM Connor: I think I need to disassemble the whole thing, clean it up and see what's going on.
05:35 PM andypugh: Does it tighten on an emptly collet?
05:36 PM Connor: No.
05:36 PM Connor: I've never had the cam do anything.
05:36 PM andypugh: I think you need to take it apart :-)
05:37 PM Connor: Yup. :) It's a Taiwan 13x40 lathe, but the closer is apparently a high end one.. I don't remember the name right off.
06:31 PM veegee: Yet another random question: my Jeep calls for 5w-20 oil, but I'm contemplating switching it to 10w-20 or 15w-20 for this summer
06:31 PM veegee: At operating temperatures that shouldn't make a difference right? And wouldn't need to rely on the viscosity modifiers as much
06:31 PM Tom_L: you're limited to 1 per day
06:32 PM Tom_L: are you using synthetic?
06:32 PM veegee: pure synthetic
06:32 PM Tom_L: i'd probably leave it
06:33 PM Tom_L: has the oil pressure dropped?
06:33 PM tiwake: people at my place of work don't know how to fix parts... lol
06:33 PM veegee: There's no gauge for that but there's nothing wrong with the vehicle. It's 13 years old but I always stay on top of maintenance and it works like new
06:34 PM Tom_L: yep mine as well
06:34 PM tiwake: to be fair, nearly every time some part needs fixing, my suggestions end up happening
06:34 PM veegee: But I'm thinking why the necessity for 5w. It's like 30ºC and I'm going to change it again before the winter
06:34 PM Tom_L: veegee, the mfgs do that for mileage
06:34 PM tiwake: but a lot of the time I'm the one doing it anyway
06:34 PM Tom_L: it's still getting lubricated
06:35 PM tiwake: meh, w/e, pays the same
06:35 PM veegee: at operating temperatures, it behaves like a straight SAE 20 oil
06:35 PM veegee: so not sure how it would affect engine performance
06:35 PM veegee: that's the idea behind dual viscosity oils anyway
06:36 PM veegee: but the wide viscosity range as far as I know is due to the viscosity modifiers which degrade over time
06:36 PM flyback: BMCC
06:36 PM * flyback looks at veegee
06:36 PM veegee: which is why I'd rather put 15w-20 so the worst it can get is 15 weight instead of 5
06:36 PM flyback: you ever buy a can of non detergent oil
06:36 PM flyback: man you pay out of the ass
06:37 PM veegee: flyback wait what?
06:37 PM flyback: I couold onlyt get sae30 too I wanted 20
06:37 PM flyback: $9
06:37 PM veegee: Yes, for my compressor
06:37 PM flyback: I got some for the furnace
06:37 PM veegee: it's so cheap
06:37 PM flyback: saved my dad $260 for another season or so
06:37 PM flyback: the drafyt motor has sleeves
06:37 PM veegee: non synthetic non detergent oil is so cheap
06:37 PM flyback: this was $9
06:37 PM flyback: I would have loved to get synth
06:37 PM veegee: I also use it for my hair clippers
06:37 PM flyback: I would have paid $9 for synth
06:38 PM flyback: that reminds me need to change oil in my used 4 times generator soon
06:38 PM flyback: going to go to synth
06:38 PM veegee: Doesn't even matter, just change it often
06:38 PM flyback: it might help a little
06:38 PM veegee: for something that gets used that infrequently, don't even bother
06:38 PM flyback: I love that little champion 1400w
06:38 PM flyback: it's a real trooper
06:38 PM Tom_L: veegee, that's what i say if you're worried about your oil breaking down
06:39 PM veegee: I have a 11kW V twin generator
06:39 PM flyback: nice
06:39 PM veegee: full pressure lubrication
06:39 PM flyback: yeah lube is really important for machine tools
06:39 PM veegee: But my motorcycle and car get used every day so I put in pure synthetic only
06:39 PM flyback: if you want it to stay as virgin tight as long as possible
06:39 PM flyback: so use the right shit
06:39 PM veegee: ^ that's a myth
06:39 PM flyback: really?
06:39 PM veegee: number of times doesn't make it looser
06:40 PM veegee: I'm talking about humans
06:40 PM flyback: oh hahahahaa
06:40 PM flyback: I wouldn't have a clue
06:40 PM veegee: birth on the other hand will change things
06:40 PM * flyback has 0 experience on this
06:40 PM flyback: oh btw I am offically old now at 46
06:40 PM veegee: virgin?
06:40 PM flyback: "doctor my knees have a sharp pain going up stairs sometimes"
06:40 PM veegee: (nothing wrong with that)
06:41 PM flyback: "arthritus"
06:41 PM flyback: yeah 50% choice 50% being a social failure
06:41 PM veegee: you're not a social failure
06:42 PM veegee: it's just about getting out there more
06:42 PM veegee: (if you want to)
06:42 PM flyback: hard between adhd and aspergers
06:42 PM veegee: ah, sorry to hear that :(
06:42 PM veegee: BRB need to pick up a 100 CFM air dryer from someone
06:43 PM flyback: I made one
06:43 PM flyback: using a dead $50 professionla hair dryer
06:43 PM flyback: and a furnace draft motor
06:43 PM flyback: hehe
06:43 PM flyback: veegee, https://www.youtube.com/watch?v=xX8rqq0-TbQ
06:43 PM veegee: I'll take a video/pics of my setup in the near future
06:43 PM CaptHindsight: https://hackaday.com/2020/07/06/linux-in-the-machine-shop-hack-chat/
06:44 PM flyback: I loved the sound of that slow ramping draft motor at grandmas
06:44 PM flyback: when I was little I used to run downstairs to hear it spin up
06:44 PM flyback: so after grandpa passed and I moved up their to take care of grandma till she passed
06:44 PM flyback: when they had to replace the furnace I sabved it
06:46 PM flyback: looks a little different now, no pipe (although I really need one to premix cold air or switch the heater to pwm) and the filter is gone
06:46 PM flyback: it restricted air intake too miuch
06:46 PM flyback: I liked using the hair dryer cause of all the safety circuits
06:46 PM flyback: thermal fuse etc
06:47 PM flyback: I used to burn out $50 hair dryers running them for hrs before I built that
06:47 PM flyback: sadly I could have fixed most of them if I had been on ebay at the time
06:47 PM flyback: the motor in a professionl hair dryer has replacable brushes for when the motor is used in power toools etc
07:25 PM ve7it: _unreal_, 9600n81 is the magic terminal setup for talking to the servos
07:26 PM _unreal_: ok
07:26 PM _unreal_: going to take a shower and I'll get it booted up in a bit
07:26 PM _unreal_: I kept getting (0ff)(e0f) and stuff like that on the return
07:27 PM ve7it: probably wrong terminal setup
07:27 PM Tom_L: pretty standard rate
07:28 PM Tom_L: had one that only did 4800
07:30 PM flyback: http://cowlark.com/fluxengine/index.html
07:46 PM _unreal_: likely wrong setup
07:47 PM _unreal_: booting stuff up
07:51 PM _unreal_: ve7it, getting things booted up now
07:52 PM _unreal_: ve7it, you live? if so i'm swtiching to my linuxcnc account
07:52 PM _unreal_: err computer
07:53 PM ve7it: yup... just about dinner time here
07:54 PM ve7it: ... he's back
07:56 PM _unreal_: ok so my serial port is ttyUSB0
07:59 PM _unreal_: ?
08:00 PM _unreal_: ve7it, ?
08:02 PM _unreal_: I type S I get
08:02 PM _unreal_: [20:52:53:265] <0xfe>
08:03 PM Tom_L: _unreal_, did you set the baud and parity?
08:04 PM _unreal_: so far as I can tell
08:05 PM _unreal_: I dont think parity was mentioned
08:05 PM _unreal_: none, odd, even, mark
08:05 PM _unreal_: space
08:05 PM Tom_L: none
08:06 PM Tom_L: 9600n81 is the magic terminal setup for talking to the servos
08:06 PM _unreal_: then its set correctly
08:06 PM _unreal_: I should not be getting a responce in cutecom if the tx/rx are on the wrong connections
08:08 PM CaptHindsight: 9600 8n1 was a common default
08:12 PM ve7it: what connectors do you have on the serial line? 9 pin or 25 pin?
08:13 PM _unreal_: grd, rx tx
08:13 PM _unreal_: oh 9
08:14 PM ve7it: doesnt really matter.... short rx to tx on the end of the cable that goes to the servos (remove cable from servo first) likely pins 2 and 3... typing on the keyboard should echo to the terminal screen
08:16 PM _unreal_: cable from servos?
08:16 PM _unreal_: as in power or encoder
08:16 PM Tom_L: the data connection
08:18 PM _unreal_: testing
08:18 PM _unreal_: [20:52:53:265] <0xfe><0xfe>hello
08:18 PM _unreal_: [21:08:55:373] hi
08:18 PM _unreal_: [21:08:56:982] test
08:18 PM _unreal_: [21:08:58:916] how are you
08:18 PM _unreal_: straight RX-TX jumpered and not on servo contoller
08:19 PM ve7it: yup... looks like the echo is working, although [20:52:53:265] <0xfe><0xfe>hello looks funky
08:20 PM _unreal_: ya it just didnt word wrap I guiess?
08:21 PM _unreal_: still getting 0xfe
08:21 PM ve7it: I just got called to dinner.... keep messing with it... you are close 9600baud, no parity, 8 data bits, 1 stop bit
08:21 PM _unreal_: ok
09:43 PM flyback: <flyback> WHOA
09:43 PM flyback: <flyback> https://www.youtube.com/watch?v=8rRRvgjLjZU <--- 1.1ghz 74 series logic, OWNS YOUR "CANUCK".....................................CANUCKS!
09:46 PM flyback: https://youtu.be/8rRRvgjLjZU?t=130 <---- ahahahahahhahahhahahha
10:32 PM CaptHindsight is now known as SpineyNorman
10:33 PM SpineyNorman is now known as CaptHindsight
10:36 PM diginet_ is now known as diginet