#linuxcnc Logs

Nov 26 2019

#linuxcnc Calendar

03:17 AM Deejay: moin
04:52 AM SpeedEvil is now known as Guest22473
05:00 AM Tom_L: morning
05:04 AM jthornton: morning
05:11 AM Tom_L: 39F, Hi 62 local wind advisory starting later today
05:12 AM Tom_L: cold front must be moving back in
05:12 AM p0g0: Mid-Central USA?
05:12 AM Tom_L: yup
05:13 AM p0g0: Tom_L, windy.com for an interesting weather site.
05:14 AM Tom_L: yeah i've seen that or one similar
05:49 AM Loetmichel: *giggle* just didn an "old school CAD"... 50" Monitor shall get a new backplate... old backplate has literally 1000 holes in it... so i took a big sheet of paper, taped it to the original backplate, took a pencil, rubbed all holes thru, rololed the paper up, sent it to the designer in berlin... who has a measurement machine... a lot cheaper than sending the steel backplate across germany ;)
06:03 AM XXCoder: nice :)
07:07 AM BitEvil is now known as SpeedEvil
07:08 AM SpeedEvil: As long as humidity doesn't cause issues :)
09:53 AM drdoc: urrrgh
09:54 AM * drdoc tries to wrap his head around a 1st-angle drawing
09:55 AM drdoc: I can *read* first angle ok, but using it to make peints hurts my head
09:55 AM drdoc: prints*
09:55 AM Elmo40: you have a pic?
09:56 AM drdoc: of the model? or of a first-angle projection?
09:59 AM drdoc: the model's just a mount block for an array of hydraulic valves, but it's under NDA
10:03 AM Elmo40: meh, nda... who cares
10:03 AM Elmo40: nothing in this world is 'secret' anymore
10:03 AM Elmo40: besides, it is a hydraulic component. how high tech and super secret can that be?
10:04 AM drdoc: heh, it's not the part, it's the customer
10:05 AM drdoc: very high-tech, and super secretive
10:06 AM drdoc: ...although they don't seem to care about the "security" implications of sending designs to Pakistan for manufacture
10:06 AM Elmo40: >_<
10:07 AM drdoc: hence the 1ap drawings
10:14 AM Elmo40: would a quad-core Xeon be decent for LCNC? There is a server up for sale and i was thinking of grabbing it for my next machine... It is old, from 2007 or so. DDR2 RAM.
10:22 AM Loetmichel: Elmo40: i am running my machines on Core2duo 2,8ghz
10:23 AM Elmo40: these are only 1.3 or so quad core
10:23 AM Elmo40: just wondering if the architecture was supported
10:23 AM Loetmichel: and they can do PLT 4 axis and parallen VNC for the desktop AND encloding a webcam no problem
10:23 AM drdoc: Elmo40: that's almost certainly a P4-class Xeon
10:23 AM Elmo40: old school...
10:23 AM drdoc: power-hungry, slow-ass space heaters
10:24 AM Elmo40: indeed
10:24 AM Loetmichel: drdoc: should still work
10:24 AM drdoc: oh yeah
10:24 AM Loetmichel: Core2 duo werent the most powerful either
10:24 AM Elmo40: 80W units!! Damn. they are heaters.
10:24 AM * Loetmichel has the machine of a friend running on a singlecore 3ghz p4 ,)
10:25 AM drdoc: just saying a C2D would do at least as well for a lot less operating cost
10:25 AM Loetmichel: and it even has decent jitter
10:25 AM Elmo40: i dont doubt it will work just wondering it Xeon architecture is different than normal Intel processors and it isn't quite supported
10:25 AM drdoc: nope
10:25 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=13089
10:26 AM Loetmichel: i think thats pretty decent
10:26 AM Loetmichel: xeons are basically normal CPUs of the time, but with more cores and usually higher speed
10:26 AM drdoc: nice
10:27 AM Loetmichel: no different architecture
10:27 AM drdoc: I gave away a couple of PICMG systems 6 years ago
10:27 AM drdoc: that's a much nicer systyem card than mine were
10:28 AM Loetmichel: drdoc: fitted the machine juuuust barely: http://www.cyrom.org/palbum/main.php?g2_itemId=13149&g2_imageViewsIndex=1
10:28 AM drdoc: and they were both on 14-slot backplanes
10:28 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=13143&g2_imageViewsIndex=1
10:28 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=13131&g2_imageViewsIndex=1
10:28 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=13107&g2_imageViewsIndex=1
10:28 AM Loetmichel: :-)
10:29 AM Elmo40: well, this unit is only $30 so i thought of grabbing it
10:29 AM Elmo40: but, unsure would parport...
10:29 AM Elmo40: do i 'need' one?
10:29 AM Loetmichel: you need either parport or a mesa or similar card
10:30 AM drdoc: Loetmichel: nice
10:30 AM Loetmichel: linuxCNC has to get the mtoor signals out and the sensor signals in somehow ;)
10:30 AM drdoc: Elmo40: where are you?
10:30 AM Loetmichel: drdoc: threw it together from spare parts i had layign around
10:30 AM Loetmichel: for a coworker
10:30 AM Elmo40: Ontario, Canada
10:30 AM drdoc: ah
10:31 AM Elmo40: i guess the main issue is that it is a rack unit. not a tower.
10:31 AM drdoc: if you were in the US I was going to offer a Quad-2 Core board
10:31 AM Elmo40: cant actually fit cards
10:31 AM drdoc: it'll be noisy as hell, too
10:31 AM Elmo40: i have an i5 lying around with 8GB of RAM.
10:32 AM Loetmichel: drdoc: my machine at home is noisy, too
10:32 AM Loetmichel: but because of the 1U server PSU
10:33 AM Loetmichel: had to press a bit to get the industrial c2d-board into the old 286-Pizzabox ;)
10:33 AM drdoc: heh
10:33 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=12265
10:33 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=12250
10:33 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=12247
10:34 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=12569&g2_imageViewsIndex=1
10:34 AM Loetmichel: :-)
10:34 AM drdoc: the machine runs on the 1U psu or the computer does?
10:34 AM Loetmichel: thecomputer does
10:34 AM Loetmichel: the machine runs on a selfbuilt toroid psu
10:35 AM drdoc: ah
10:35 AM drdoc: my machine runs on a pair of 2U server PSUs
10:35 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=12808&g2_imageViewsIndex=1 <- thats the back of the machine in the last pic
10:35 AM drdoc: 2x 54A 12V in series
10:36 AM Loetmichel: its a wee bit "cobbled togehter"
10:36 AM drdoc: heh
10:36 AM Loetmichel: because the old SMPS 32V PSU exploded on me ;)
10:36 AM drdoc: lol
10:36 AM Loetmichel: down on the bottom
10:37 AM drdoc: I'm in the middle of reassembling my router
10:38 AM drdoc: first version worked well enough to tell me what needed changing
10:39 AM drdoc: I *hope* that this - v0.2 - is the last mostly-printed iteration
10:39 AM Loetmichel: MPCNC? *SHUDDER*
10:40 AM Loetmichel: i mean nothing wrong with printed parts on a CNC router... but that particular design is a bit weak even for MY standards
10:40 AM Loetmichel: and i am fine with CNC 6040 routers
10:40 AM drdoc: heh
10:41 AM drdoc: nononono
10:41 AM drdoc: it's not an MPCNC design at all
10:41 AM Loetmichel: *phew*
10:41 AM drdoc: it was just a lot cheaper and simpler to print the plate parts for the first build
10:42 AM Loetmichel: i mean: i build CNC machines of marine plywood
10:42 AM Loetmichel: and XXL to boot ;)
10:42 AM drdoc: knowing I'd want to change it up
10:42 AM Loetmichel: but a bit of "knowledge" inserted into the design goes a long way
10:42 AM drdoc: yes
10:43 AM Loetmichel: thats my "standard" wooden router design: http://www.cyrom.org/palbum/main.php?g2_itemId=11205&g2_imageViewsIndex=1
10:43 AM Loetmichel: and its PRETTY rigid ;)
10:49 AM drdoc: heh
10:49 AM drdoc: rigid is relative
10:49 AM Loetmichel: rigid enough to mill alu to less than a 50um tolerance
10:50 AM Loetmichel: thats not bad for a wooden router at all
10:51 AM drdoc: my last shop had a couple of Mazak VT 200 mills, and even there, "rigid" finally depends on the tool
10:51 AM drdoc: the last shop I worked in, that is
12:00 PM Deejay: hi
12:13 PM SpeedEvil: Is directional work hardening a thing? That is - if you take a stainless steel strip - and pass it through rollers bending it up and down - is there any assymetry in the hardening of any kind?
12:16 PM CaptHindsight: https://www.researchgate.net/post/Is_there_a_difference_between_strain_hardening_and_work_hardening
12:19 PM SpeedEvil: That does not address the above other than to not address it.
12:34 PM CaptHindsight: but does it not address the above
12:35 PM CaptHindsight: "is there any assymetry?" what pattern do the rollers follow?
12:38 PM CaptHindsight: http://www.idc-online.com/technical_references/pdfs/mechanical_engineering/Concept_of_Strain_Hardening_and_Effects_of_Mechanical_Working.pdf according to this "Grains are oriented in a particular direction and directional properties are obtained."
12:39 PM CaptHindsight: andypugh: how would you describe it?
12:40 PM CaptHindsight: https://www.sciencedirect.com/science/article/pii/S0020768307002077
12:40 PM andypugh: Oh, cold-rolled steel spring steel strip an drawn wire definitely has asymmetry.
12:40 PM andypugh: This is almost my specialist subject :-)
12:41 PM andypugh: But, you know, all the time I was heat-treating and cold-rolling spring-steel, it never ocurred to me to test the transverse strength.
12:42 PM SpeedEvil: I was sort-of-wondering about the tesla supercar.
12:43 PM Loetmichel: SpeedEvil: supercar???
12:43 PM SpeedEvil: The 30x stainless - you could of course roll it thinner and obtain constant through-hardness by expanding it in both X and Y.
12:43 PM SpeedEvil: whatever
12:44 PM Loetmichel: no, i mean: what supercar?
12:44 PM SpeedEvil: Or, you could just bend it and then bend it back flat and get the outer parts hardened - easily in a comparatively low stress rolling process.
12:44 PM Loetmichel: the cybertruck?
12:44 PM SpeedEvil: yes
12:44 PM SpeedEvil: I meant that.
12:44 PM Loetmichel: thats not a supercar though ;)
12:44 PM SpeedEvil: No.
12:44 PM CaptHindsight: close enough
12:44 PM CaptHindsight: marketing (eye roll)
12:45 PM Loetmichel: couldnt be further
12:45 PM Loetmichel: supercars are sleek little overpowered racing machines
12:45 PM CaptHindsight: not the point, stop being so German :)
12:45 PM Loetmichel: not blocky pickup trucks
12:45 PM SpeedEvil: Though 2.9 seconds i0-60 s as close as I need to a supercar for all reasonable purposes.
12:45 PM Loetmichel: THAT indeed
12:46 PM Loetmichel: that said: i LIKE the design of said truck
12:46 PM Loetmichel: would like to preorder one but i doubt i will have the money next year to pay for it so i wont
12:47 PM SpeedEvil: Preorder the 3 motor version - that's not till 2022. :)
12:47 PM CaptHindsight: andypugh: I saw that you build new LCNC packages and RTAI but you could not post them to http://linuxcnc.org/downloads/
12:47 PM Loetmichel: i doubt i will have the money THEN, too ;)
12:48 PM Loetmichel: i just like the design
12:48 PM Loetmichel: reminds me of the eighties idea of a science fiction car
12:49 PM CaptHindsight: very Delorean-like
12:49 PM Loetmichel: and a bit of the armored truck in the orginal Battlestar galactica series
12:49 PM CaptHindsight: SS really stands out and all the angles
12:49 PM andypugh: CaptHindsight: It’s more that I can’t put the packages in the LinuxCNC repository, so can’t make and check the ISO images.
12:51 PM andypugh: It’s odd, I hate the Tesla truck, but love the very similar Lagonda: https://en.wikipedia.org/wiki/Aston_Martin_Lagonda
12:51 PM andypugh: Maybe because one was right for its time, and one is hideous?
12:52 PM Loetmichel: https://i.pinimg.com/originals/10/83/aa/1083aac638a38cbe255cc47a3e7dba8a.jpg <- that thing
12:52 PM * JT-Shop almost wonders how I ended up with 750 of these... https://ae01.alicdn.com/kf/HTB1Ol4sKXXXXXaIXXXXq6xXFXXXF/High-quality-1-set-of-Simple-PCB-Circuit-Board-Mounting-Bracket-For-Mounting-DIN-Rail-Mounting.jpg
12:53 PM CaptHindsight: Countach in stainless
12:53 PM CaptHindsight: https://cdn.motor1.com/images/mgl/AYNzP/s1/lamborghini-countach-1974-1989.jpg
12:54 PM Loetmichel: CaptHindsight: countach is a timeless design imho
12:54 PM Loetmichel: and i LIKE it! ;)
12:55 PM CaptHindsight: in Marty Feldman sort of way https://static.independent.co.uk/s3fs-public/thumbnails/image/2016/01/12/14/marty-feldman.jpg?w968h681
12:59 PM Loetmichel: hh, that gives me an idea: anybody know of a countach kit car from before 2003 for sale and a totaled tesla? ;)
01:00 PM Loetmichel: (before 2003 because its easier to get a e-coversion road legal if the base car is older than that)
01:02 PM CaptHindsight: I'll make you one :)
01:02 PM CaptHindsight: https://www.rediscoverthe80s.com/2014/04/8-best-toy-tanks-from-80s-plus-3-worst.html
01:03 PM Loetmichel: CaptHindsight: hehe, i had a bigtrac once ;)
01:04 PM CaptHindsight: https://www.rediscoverthe80s.com/2013/03/5-forgotten-cars-of-80s.html
01:04 PM Loetmichel: about 40 years ago or so ;)
01:04 PM CaptHindsight: convertible delorean
01:06 PM CaptHindsight: Loetmichel: best of both worlds? https://lh5.googleusercontent.com/proxy/u8yhG3AyVdtm05cHUW-2bjv3ynsIyHWXOkMbfvRmd0M9AYRBbw_C3HRESP8Up01oS_0A9hL8wkbKyrk__O1C-5HNOryirhrj2D7eo7QTbgoiXD5sVD_0MKpdcsNtFGU42DdXjd-aZVp4xcU=s0-d
01:06 PM Loetmichel: nah
01:06 PM Loetmichel: no thanks
01:06 PM Loetmichel: thats ridiculous
01:13 PM andypugh: Big BigTrak: https://www.youtube.com/watch?v=wa681uSqbvc&feature=emb_logo
01:16 PM net|: https://stackoverflow.com/questions/1519885/defining-own-main-functions-arguments-argc-and-argv
03:55 PM Deejay: gn8
04:29 PM Jymmm: And... we have snow
04:32 PM Loetmichel: here it still is +12°C
04:33 PM Loetmichel: <- was just on the balcony smoking... and its half past eleven PM here
04:33 PM CaptHindsight: Loetmichel: we kept the cold over here for you, will be giving it back later this winter :)
04:34 PM Loetmichel: yeah, they forecast -5°C for next week
04:34 PM Loetmichel: we'll see
05:28 PM Tom_L: wind 27, gusts 41
05:33 PM JT-Shop: get your kite out
05:35 PM Tom_L: went from ~6mph to that in about a min or so
05:35 PM Tom_L: definitely not quad weather
05:37 PM JT-Shop: that's when you pull out the whoops and fly indoors
05:37 PM Tom_L: or outdoors for a _real_ adventure!
05:38 PM JT-Shop: the dji's will fly ok in the wind but I prefer not to as they are a bit pricey
07:10 PM CaptHindsight: 60mph gust warnings for tomorrow here
07:28 PM skunkworks: CaptHindsight: is the snow going to miss you?
07:32 PM drdoc: whoever posted the Electric Goldmine link the other day owes me about 6 hours
07:32 PM drdoc: :-)
07:38 PM CaptHindsight: skunkworks: yes,just rain
08:06 PM _unreal_: skunkworks, hi
09:32 PM _unreal_: there finished a soldering job I've been wanting to and refusing to do for months
09:32 PM _unreal_: MONTHS
09:33 PM * Javabean looks at the frame of his 3dprinter he hasn't touched in a while
09:33 PM Javabean: MONTHS!!!!!!!!!!!
09:35 PM _unreal_: I'm goiing to be waiting MONTHS!!!!!! for my stupid parts for my new cnc machine to arrive
09:35 PM _unreal_: soon as they get here I can get busy
09:37 PM Javabean: thats what i thought about my printer... i think i have all the parts, but i get demotivated about everything everytime i so much as touch it... maybe i should move it away from its current spot, gotta touch it like 100 times a day
10:16 PM fjungclaus1 is now known as fjungclaus
11:10 PM Elmo40: _unreal_, what happened now? why wait for parts?
11:10 PM Elmo40: Javabean, what is broken on your 3D printer?