#linuxcnc Logs

Jun 18 2017

#linuxcnc Calendar

12:00 AM nubcake: and who doesn't do ok because of you doing ok?
12:02 AM pfred1: nubcake I don't know and i don't care
12:02 AM nubcake: speaking of god
12:04 AM nubcake: nvm.
12:04 AM nubcake: makes perfect sense
12:04 AM LeelooMinai: pfred1: A cow on a nice pasture with a barn can claim the same thing...
12:04 AM pfred1: LeelooMinai sure I have them aroudn the corner from ne here
12:04 AM pfred1: buffalo tthe other way
12:04 AM pfred1: the Johnsons raise buffalo just to be different I guess?
12:04 AM pfred1: they're kinda cute
12:04 AM pfred1: mostly this is chicken country though
12:08 AM pfred1: nubcake we don't start wars
12:08 AM pfred1: we make them not worth fighting
12:08 AM LeelooMinai: pfred1: So you are like an emu with the head in the sand shouting "This desert is the best desert on Earth!" :p
12:09 AM LeelooMinai: lol @ not start wars
12:09 AM nubcake: you don't start them, you mostly lose them i guess? (besides ww2 luckily)
12:09 AM pfred1: because when America shows up you're goingto lose millions
12:09 AM pfred1: nubcake what war have we lost?
12:09 AM LeelooMinai: All of them since WWII? :)
12:09 AM nubcake: oh wait, did you win vietnam?
12:09 AM nubcake: iraq?
12:09 AM nubcake: afghanistan?
12:09 AM pfred1: we did sure
12:09 AM pfred1: two years after we left the South fell
12:10 AM nubcake: nope sorry you didn't
12:10 AM pfred1: but while we were engageedi n military actions in Vietnam we didn't lose shit
12:10 AM nubcake: totally not :D
12:10 AM nubcake: wondering what kind of drugs you're on
12:10 AM pfred1: we totally crushed the North
12:10 AM nubcake: yeah in your dreams you personally did and had a big red S on your chest ?
12:10 AM pfred1: do you have any idea how many Vietcong we killed?
12:10 AM LeelooMinai: pfred1: Right, you did not lose shit, just a lot of US soldiers.
12:11 AM nubcake: oh so it's esports ? like ohai biggest k/d ?
12:11 AM pfred1: because if you do you'd be the only person on the planet within one million of estimates
12:11 AM nubcake: sorry, doesn't go that way
12:11 AM roycroft: wwii is the last war that the us won, but it was also the last war that we officiall declared, so technically we haven't lost any wars since then either :)
12:11 AM pfred1: LeelooMinai considering the kills we inflicted we did not lose that many
12:11 AM pfred1: our kill ratio in Nam was better than 57 to 1
12:11 AM nubcake: roycroft, well by that view it's true.. :D
12:12 AM pfred1: but hey if yo uthink that is losing have it
12:12 AM pfred1: you're fucking idiots
12:12 AM nubcake: but what if we interview the opposing forces wether it was war or not?
12:12 AM roycroft: we've just lost almost every "engagement" since wwii
12:12 AM pfred1: all of you
12:12 AM nubcake: pfred1, did you establish peace in any of the countries?
12:12 AM nubcake: freedom?
12:12 AM nubcake: no, you didn't
12:12 AM pfred1: nubcake for a tim we did
12:12 AM pfred1: yes we did
12:13 AM pfred1: the peace held for about a year
12:13 AM pfred1: we could have gone back and started killing them again we chose not to
12:13 AM nubcake: how come?
12:13 AM Crom: ok m5's ordered
12:13 AM pfred1: at that point it was obviously pointless
12:13 AM nubcake: finally figured that you can't fight war with war ?
12:13 AM pfred1: because killing 2 million didn't make it any better
12:13 AM nubcake: at least if it's not your war ?
12:14 AM pfred1: nubcake in a way we were experimenting with other ways to wage war in Nam
12:14 AM pfred1: firebases
12:14 AM nubcake: experimenting indeed, agent orange and other chemical shit the world wouldn't have needed at all
12:14 AM pfred1: we never denied the enemy ground in Nam
12:15 AM pfred1: we'd go in and kill them then leave
12:15 AM pfred1: we wanted to see if simple attrition could win a war
12:15 AM pfred1: just killing the enemy
12:16 AM nubcake: well. had a good laugh here, thanks for all of that bs, going to follow roycrofts advice now, have fun dreaming in that little funnyworld of yours and enjoy freedom.
12:16 AM pfred1: for political reasons we never advanced the front
12:16 AM pfred1: probably because of what happened in Korea
12:17 AM pfred1: when the CHinese got involved
12:27 AM LeelooMinai: Hmm, one guy removed the zinc from screws with cytric acid in an hour or so - maybe that's the safest way (?)
01:01 AM LeelooMinai: Any idea what HSSAL means for an endmill. I mean, looks like High Speed Stell + what, Alkuminum? Is that HSS meant for Aluminum matterial or something else?
01:01 AM XXCoder: high speed alum
01:02 AM LeelooMinai: Er, like what - the endmill is from some special Aluminum?
01:03 AM XXCoder: its to cut alum
01:03 AM XXCoder: high speed im not too sure, maybe its for high rpm speed
01:56 AM IchGucksLive: morning from Germany
01:57 AM XXCoder: hey
01:57 AM IchGucksLive: LeelooMinai: still on
01:57 AM IchGucksLive: HSSAL means it is sharpen for the Alloy chip
01:57 AM LeelooMinai: No, I am half way to Mars - decided to leave:)
01:58 AM IchGucksLive: LeelooMinai: Why it is so cool here on earth
01:58 AM XXCoder: IchGucksLive: greenland ice is melting and cooling ocean
01:58 AM IchGucksLive: we got a coffee break during Harvest
01:58 AM XXCoder: so it might be cooler but its not good news
01:59 AM XXCoder: last winter north pole was 35f warmer than average for that time
01:59 AM IchGucksLive: XXCoder: ive heard the oposit from the funny man
02:02 AM XXCoder: whos funny man
02:03 AM LeelooMinai: Probably from someone who thinks climate change is a hoax because even if the ice melts, the excess water falls off the edge of the world, so it's not a problem.
02:04 AM XXCoder: lol
02:04 AM XXCoder: the orange one certains belives weather climate is a hoax
02:05 AM LeelooMinai: I don't know... At this point I would not be surprised if he thinks when people talk about climate they mean A/C
02:05 AM XXCoder: probably same people who thinks local snow means global world warming is myth
02:08 AM XXCoder: 2015-2016 we had 14 record breaking temperate months in row
02:09 AM LeelooMinai: But 15th month was colder than 14th, so, cooling
02:09 AM LeelooMinai: QED
02:10 AM XXCoder: lol
02:15 AM Deejay: moin
02:55 AM IchGucksLive: have a nice day
04:47 AM TurBoss: morning
04:49 AM XXCoder: hey TurBoss
04:49 AM TurBoss: hello XXCoder
05:33 AM jthornton: morning
05:33 AM pink_vampire: morning
05:34 AM XXCoder: heys
05:36 AM tuppo: hi all, does anybody know of a cnc plugin for VIM ?
05:36 AM pink_vampire: no
05:37 AM jthornton: http://www.alloyavenue.com/vb/album.php?albumid=113&attachmentid=12313
05:37 AM archivist: tuppo, there is one for gedit
05:38 AM archivist: jthornton, have to be registered
05:38 AM pink_vampire: tuppo: http://www.vim.org/scripts/script.php?script_id=4910
05:40 AM tuppo: pink_vampire: thx.... looks promising
05:40 AM pink_vampire: cool :)
05:41 AM jthornton: https://imagebin.ca/v/3QO7P7QBfc4F
05:42 AM pink_vampire: jthornton: WTF O_o
05:42 AM jthornton: breaking down alum to nuggets
05:44 AM Loetmichel: the IR-sensitivity of digicams is always good for a nice pic of a fire
06:31 AM XXCoder: https://s-media-cache-ak0.pinimg.com/originals/97/68/55/9768552c764dd727b0386fef8c0f4b4b.jpg
06:31 AM XXCoder: pretty cool
06:34 AM pink_vampire: Super cool!!
06:35 AM pink_vampire: XXCoder: this is yours?
06:35 AM XXCoder: yeah. heck no!
06:35 AM XXCoder: I have a $27 lathe thats 1% as cool as that lol
06:36 AM pink_vampire: 27$ lathe??
06:36 AM XXCoder: a second lets see if I can find uit
06:36 AM pink_vampire: ok. take your time..
06:37 AM XXCoder: not that long
06:37 AM pink_vampire: the oven is warming up..
06:37 AM XXCoder: https://www.banggood.com/DC-24V-Mini-Lathe-Beads-Machine-Polish-Woodworking-DIY-Tools-80-100W-p-1121255.html
06:37 AM XXCoder: it was cheaoper but not anymore
06:38 AM archivist: rename bangterrible
06:38 AM pink_vampire: where is the tool holder??
06:39 AM archivist: hand rest for wood turning
06:39 AM XXCoder: theres bracket for that
06:39 AM XXCoder: archivist: whats wrong with banggood
06:39 AM archivist: selling stuff like that!
06:40 AM XXCoder: lol
06:40 AM XXCoder: theres $180 cnc routers too now, though not very good too
06:41 AM pink_vampire: why there is a drill chuck in front of the tail stock?
06:41 AM XXCoder: it acts as part holder
06:41 AM XXCoder: its cheap way to do it, its taken from drill, motor and chuck assembly
06:42 AM pink_vampire: how you are holding the stock in the drill chuck??
06:42 AM pink_vampire: there is 3 jaw chuck adapter??
06:42 AM XXCoder: its junk really so doubtful lol
06:42 AM XXCoder: it can do little more than beads and stuff
06:43 AM archivist: it is you can make model chairs out of matchsticks
06:43 AM XXCoder: i got it because it was on massive sale that got it down to $27
06:45 AM XXCoder: https://www.youtube.com/watch?v=yfE6ZkPfbbY
06:45 AM XXCoder: mine didnt come with that spikey part holder
06:46 AM pink_vampire: WTF he use a spot drill as a tail stock O_O
06:46 AM XXCoder: yeah it come like that
06:46 AM XXCoder: mine is cone type
06:46 AM XXCoder: I think
06:48 AM pink_vampire: he burly touch it and it stop
06:48 AM XXCoder: yep
06:48 AM XXCoder: hes using too big tool
06:48 AM archivist: they are a toy basically
06:48 AM XXCoder: I have tiny kit that come with mine
06:49 AM XXCoder: i got it for lols rather than any serious use
06:49 AM pink_vampire: get the grizzly micro lathe.. at least you can do light metal work on it, and you have also tool holder and tail stock
06:49 AM pink_vampire: http://www.grizzly.com/products/4-x-6-Micro-Metal-Lathe/G0745?utm_campaign=zPage&utm_source=grizzly.com
06:50 AM XXCoder: yeah if I need a serious lathe I would
06:51 AM Loetmichel: that looks exactly like the one i have...
06:51 AM Loetmichel: it has a few drawbacks though
06:51 AM Loetmichel: most important it misses a cross sled
06:52 AM XXCoder: pink when he uses smaller tool it works fine
06:53 AM pink_vampire: https://www.harborfreight.com/5-speed-bench-top-wood-lathe-65345.html
06:53 AM jthornton: https://www.youtube.com/watch?v=wtDHaXcS6Tg
06:53 AM pink_vampire: add the 25% coupon and you get it close to 150$
06:54 AM XXCoder: yah saw those
06:54 AM Loetmichel: and the man ways "sled" is so lose that if the tool catches the whole sled would topple over if the leadscrew souldnt hold it in place
06:54 AM XXCoder: if I ever need a serious need for one it would be ok
06:54 AM Loetmichel: other than that its useable
06:55 AM XXCoder: https://www.youtube.com/watch?v=zZldiUYMftM
06:55 AM XXCoder: thats one same as mine, no forky thing to hold on to part
06:59 AM XXCoder: LOL look at it runout https://www.youtube.com/watch?v=yXCCEjRESys
07:39 AM archivist: phipli, this is what I call burnt insulation http://ichef.bbci.co.uk/news/976/cpsprodpb/15677/production/_96517678_gettyimages-696240712.jpg
07:40 AM archivist: most window frames gone as well
07:43 AM Loetmichel: archivist: been there, seen that... on the house i lived in when i was young
07:43 AM Loetmichel: 16 stories 160 flats appartment block
07:44 AM Loetmichel: with puter inslulation made of wood fibres/cocos mats behind the eternit facade.
07:45 AM archivist: that insulation was new 2016 though!
07:45 AM Loetmichel: roofers managed to ignite it while putting on new tar roofing felt
07:46 AM Loetmichel: ... it burned down between inner (gypsum drywall)walls and outer eternit facade to the first floor
07:46 AM Loetmichel: was quite expensive to repair...
07:47 AM Loetmichel: and the roofing company went out of business immediatly and had no sufficient insurance... :-(
07:48 AM Loetmichel: so each and every appartemnt owner was in for a €36k repair bill that year
07:51 AM XXCoder: ouch.
08:17 AM jthornton: new one https://www.youtube.com/watch?v=yfaGV6RVEq8
08:22 AM XXCoder: did you see him outgas then add flux?
08:35 AM X704 is now known as tiwake
09:24 AM Phiplii: archivist : I had that level of burnt, considering the temperatures, as "self extinguishing", compared to the cladding itself which is just plain gone!
09:40 AM jthornton: Phiplii: do you have a simple example of passing an array to a funtion by reference?
09:42 AM Phiplii: hum. pointers...
09:42 AM Phiplii: I'll see what I can find
09:46 AM jthornton: I'm not having any luck finding a short example
10:01 AM phipli: I had to remind myself sorry - I expected to do offsets from a pointer like in normal C++
10:01 AM phipli: but it seems to be slightly easier than that
10:01 AM phipli: I've PM'd you an example jthornton
10:07 AM archivist: window frames are more missing!
10:09 AM archivist: just playing with the cmm for the first time in ages, I hate not having the manual, its making me think of putting linuxcnc on it
10:27 AM jthornton: dang kernel building takes a long time
10:32 AM omenius: Can normal human being with web programming background just use LCNC and turn three servo motors + some parts into 3d printer in moderate time span or is it suicidal?
10:34 AM omenius: Like if build the thinig, get proper drivers for those motors and plug them in something like raspberry, is it merely a job of calibrating or is some wizardy included?
10:36 AM jthornton: if your goal is a 3d printer I'd just use reprap stuff, if your goal is to learn LinuxCNC...
10:36 AM omenius: and I know there is kits for DIY 3d printers, but my lego years are past
10:36 AM * jthornton has a CoreXY in the plans for LinuxCNC
10:37 AM jthornton: hmm that comparison makes very little sense
10:37 AM omenius: It's too easy to just build the printer with all the right parts and with manual
10:38 AM omenius: thanks for the buzzword anyway, I'm looking into it
10:38 AM jthornton: why do you ask then if your just looking for a challenge?
10:38 AM * jthornton goes out in the shop, maybe the kernel will build faster...
10:39 AM omenius: I'm big linux and GNU fan and this software just looks cool, but I just wanted to ask if I'm overshooting the problem
10:40 AM omenius: oh gosh, the amount of typos in my text is horrible now that I'm reading it again :D
10:41 AM malcom2073: omenius: You're in for a world of hurt.
10:41 AM malcom2073: That being said, it's a hell of a fun hobby
10:41 AM malcom2073: :)
10:41 AM malcom2073: And "moderate time span" == your life fwiw
10:42 AM malcom2073: A much shallower learning curve would be to build a printer from a known design with steppers, and get it running on linuxcnc (though I recommend machinekit for 3d printers)
10:43 AM omenius: I guess this is my destiny, like some wise man once said, "YOLO"
10:43 AM sync: yoloswag4jesus - Mahatma Ghandi
10:46 AM omenius: malcom2073: are you refering stepper-motors with steppers?
10:46 AM malcom2073: Yes
10:48 AM omenius: I have some from ebay but I'm thinking about going full servo, since I have believed that they are more precise/tolerant
10:48 AM omenius: also thinking about hydraulics using syringes but that's bit overkill maybe
10:49 AM malcom2073: They compensate for error, but they are significantly more expensive and complciated to set up.
10:50 AM malcom2073: If you already have the servos though, that's a chunk of the cost. nowyou just need a mesaboard :)
10:51 AM omenius: nah, I just have some cheap steppers that I ordered for lulz
10:52 AM omenius: what is mesaboard? I have some single-board computers laying around :q
10:52 AM phipli: omenius: the guys might correct me, but while there have been some experimental ARM builds, for the most part, LinuxCNC is x86
10:53 AM malcom2073: It's a FPGA addon card family that allows control of servos, also there is one that allows much faster control of steppers
10:53 AM omenius: I see
10:53 AM phipli: (I know you can get x86 SBCs, but you mentioned Raspberry Pi earlier)
10:53 AM omenius: yeah, I have also one Odroid ARM64 but no victory there either :/
10:54 AM phipli: there are minnow boards
10:54 AM phipli: and those coffee related ones...
10:54 AM malcom2073: someoen here had linuxcnc running in the raspberry pi connected over SPI to a fpga daughtercard... dunno if that works is available though
10:54 AM phipli: whatchmacallit
10:54 AM phipli: LattePanda
10:55 AM omenius: yeah, they are little expensive afaik
10:56 AM malcom2073: You should keep your first build as simple as possible though, get a $50 old used computer with a parallel port to run linuxcnc
10:56 AM omenius: I think I'm just starting with spare laptop
10:56 AM omenius: yeah
10:57 AM phipli: malcom2073: are those ethernet controllers with "NVEM Novusun CNC" printed all over them usable?
10:57 AM malcom2073: No clue, never heard of that
10:57 AM phipli: http://www.ebay.co.uk/itm/162046617658
10:58 AM phipli: that sort of thing
10:58 AM malcom2073: Thats a mach3 thing
10:58 AM malcom2073: You'd have to search around to see if anyone has written a linuxcnc module for it, but I'd seriously doubt it
10:58 AM malcom2073: Mesa has an ethernet card though
10:59 AM malcom2073: http://store.mesanet.com/index.php?route=product/product&product_id=302
10:59 AM phipli: is that just ethernet > parallel?
11:01 AM pcw_home: well sort of (its has a parallel port pinout so can interface with standard parallel port breakouts and step drives)
11:01 AM phipli: smart way of doing it
11:01 AM phipli: nicely flexible
11:02 AM malcom2073: I really want to try raspberry pi + that mesa card. My next machine I'll likely go that route
11:02 AM malcom2073: Not the pi, but one of the pi variants that actually has a real ethernet port (rather than the USB ethernet the pi has)
11:02 AM phipli: I'd be interested in going that route and VNCing into the RSpi
11:02 AM phipli: Odroids are quite good
11:03 AM malcom2073: You'd need a second ethernet connection on the rpi, I'm not sure you can get realtime if you put the connection over a switch
11:03 AM omenius: is LinuxCNC truly limited to 9 axes like the document says, or is there workarounds? Just hypotizing if I one day wan't to build something like hand prothesis :D
11:03 AM phipli: nice build quality and the manufacturer actually puts in efforts to mainline
11:03 AM jthornton: is that what Gene has a raspberry?
11:03 AM jthornton: 7i80 and raspberry iirc
11:03 AM omenius: Maybe LinuxCNC is not the tool for protheses :P
11:03 AM phipli: malcom2073: http://www.hardkernel.com/main/products/prdt_info.php?g_code=G145457216438
11:05 AM malcom2073: jthornton: Does he have videos/blog or anything about it?
11:05 AM malcom2073: phipli: Yeah I've seen the odroids
11:05 AM omenius: I would also suggest using odroids, they are just fantastic for that price
11:06 AM omenius: only thing is that they must be pretty much ordered from south-korea, so there is duty fairs included
11:06 AM phipli: You can buy them from Germany
11:06 AM phipli: but it costs more than just paying the import tax if I remember...
11:06 AM phipli: might have that wrong
11:07 AM omenius: also I'm assuming that you don't live in korea like a real ignorant guy
11:09 AM phipli: I'm also assuming you live in Sweden
11:09 AM omenius: nah, I live in neighbor, Finland
11:09 AM phipli: damnit
11:09 AM omenius: close enough
11:10 AM phipli: https://beagleboard.org/blog/2013-10-03-beagleboardorg-collaborates-with-arduino/
11:11 AM phipli: always wanted one of them, never seen them for sale.
11:11 AM phipli: "Coming Soon"... for the last 5 years
11:17 AM omenius: I'm having a bit hard time to grasp the concept. I have always seen this like; if you don't need power and complex things like OS, just use arduino, but why to use both? I haven't ever owned or programmed arduino, just seen videos in YT
11:17 AM phipli: timing
11:18 AM phipli: even a real time linux kernel can't complete with a microcontroller in most cases as I understand it
11:19 AM phipli: and you can use the mcu to wake the main processor from sleep in that sort of thing
11:19 AM phipli: meaning you have high power when you need it
11:19 AM omenius: I see. So some things are much faster when not too much inteligence is used when processing? :D
11:19 AM phipli: baremetal programming - an mcu usually only does what you tell it
11:19 AM phipli: isn't running several layers of software
11:19 AM omenius: also I would assume you can run arduino 24/7, using rest only when needed
11:20 AM phipli: can run most things 24/7?
11:20 AM omenius: I mean batterywise it's just wise to not run OS when not needed
11:21 AM omenius: because it's truly a shotgun approach
11:21 AM phipli: Hum. Batteries.
11:21 AM phipli: do they ever really work without dedicated circuit designs?
11:22 AM omenius: well I often find myself using batteries with SBCs
11:22 AM omenius: I did not btw understand the question
11:23 AM omenius: but yeah I know that SBCs and arduinos are different meat, just that's why I'm little confused seeing them together
11:24 AM phipli: running a deployed (independent, left to do its job without intervention) project using a board that isn't designed specifically for batteries usually means you need massive amounts of batteries
11:24 AM omenius: I like the shotgun approach because I know the power of high level programming :D
11:24 AM phipli: (proportionally)
11:24 AM phipli: even arduinos use too much to be left somewhere for 6 months on their own
11:24 AM omenius: yeah, but arduinos can run like forever and most of the SBC:s are less than 2Wh
11:25 AM omenius: *W/h = W
11:25 AM phipli: but... with a few mods you can get several years from a mcu board with a few AA batteries
11:25 AM omenius: yeah, I see, thats nice usecase
11:25 AM phipli: https://www.mysensors.org/build/battery
11:26 AM phipli: useful page
11:30 AM omenius: yeah. Also using dank 18650 battery cells is good, instead of AAs or something like that
11:32 AM omenius: https://www.amazon.com/NCR18650B-Rechargeable-Li-ion-Battery-Panasonic/dp/B00C26OWGS
11:33 AM omenius: I've got some of these bad boys, about 12Wh/battery
11:40 AM omenius: I guess it's time to learn C, fuck
11:41 AM omenius: or maybe I should save my courses to the big brother, C++
11:41 AM omenius: *curses
11:42 AM malcom2073: fwiw, the beaglebone black has a PRU module that essentially acts like a microcontroller onboard
11:42 AM malcom2073: machinekit uses that for its step generation
11:42 AM omenius: sounds handy
11:42 AM malcom2073: The issue I ran into with the BBB was that it was unable to run axis smoothly due to the lack of any real graphical acceleration
11:43 AM malcom2073: Which does some really fun things, like crash your machine if you don't get to the estop button fast enough after a keypress :-D
11:49 AM jthornton: malcom2073: the stack burner?
11:49 AM malcom2073: jthornton: ?
11:49 AM jthornton: <malcom2073> jthornton: Does he have videos/blog or anything about it?
11:50 AM malcom2073: jthornton: The pi+mesa
11:50 AM jthornton: ah Gene, he might have a bit just see him daily on the mailing list
11:51 AM malcom2073: Ah I'm not on the list, I'll browse through and look
11:53 AM phipli: malcom2073: I saw someone was playing with a BBB + linuxcnc, was that you then?
11:55 AM jthornton: dang kernel finally finished building
11:56 AM malcom2073: phipli: Depends where you saw it, I did it about a year ago
11:57 AM pcw_home: you probably want a I7 and SSD for kernel building
11:57 AM malcom2073: Used the pmdx cape
11:57 AM malcom2073: Ah no wasn't me, I used machinekit not lcnc
11:57 AM jthornton: yea this is just some old PC that I have
11:57 AM jthornton: dunno what it is lol
11:57 AM omenius: malcom2073: when you said about getting mesaboard to control servos, did you have any specific model in mind or any programmable FPGA?
11:58 AM pcw_home: Ive done it on old Atoms and it takes hours
11:58 AM jthornton: hmm says it's and AMD E-450
11:58 AM jthornton: what ever that is lol
11:59 AM pcw_home: make sure you add -j(cores) to the make command (-J4 for example)
11:59 AM omenius: those motion control cards sounds more like plug'n'play :D
11:59 AM jthornton: hmm, that could be the problem my notes say make -j8
12:01 PM jthornton: and this one has 2 cores lol
12:01 PM pcw_home: I'm not sure if that hurts much, if its on a rotating disk its likely disk or memory bound
12:03 PM malcom2073: omenius: pcw would be the one to ask about that, it's all theoretical to me, I've not gottend the funds to buy one yet :-D
12:32 PM IchGucksLive: hi
12:55 PM pink_vampire: hi
12:55 PM pink_vampire: IchGucksLive:
01:01 PM IchGucksLive: ;-)
01:03 PM IchGucksLive: pink_vampire: how is it going with the system
01:04 PM pink_vampire: IchGucksLive:
01:04 PM IchGucksLive: yes i am here
01:04 PM pink_vampire: I'm trying to enjoy from the machine as is, without more improvements
01:05 PM IchGucksLive: no fun on real good working mashine for mashiebuilders
01:06 PM IchGucksLive: pink_vampire: https://www.thingiverse.com/thing:2034585/#files
01:06 PM pink_vampire: I like to make parts
01:07 PM pink_vampire: this is my goal with this hobby
01:10 PM pink_vampire: IchGucksLive: nice candle holder..
01:10 PM pink_vampire: I think if you make it from aluminum it will look nicer
01:12 PM IchGucksLive: plasma cur
01:12 PM Loetmichel: IchGucksLive: reminds me of something i did for a LARPing friend of my wife: http://www.cyrom.org/palbum/main.php?g2_itemId=3510&g2_imageViewsIndex=1
01:13 PM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=3515&g2_imageViewsIndex=1
01:13 PM IchGucksLive: Loetmichel: im on routing my 7seg arduino test
01:13 PM IchGucksLive: with max 7219
01:13 PM IchGucksLive: and anode high voltige
01:13 PM pink_vampire: nice!!
01:14 PM IchGucksLive: via uln and udn
01:14 PM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=3505&g2_imageViewsIndex=1
01:14 PM Loetmichel: was quite funny to build that
01:15 PM Loetmichel: had to add the brass at the top because the wood got scorched when i lit the tea candle for the first time
01:15 PM Loetmichel: and had to add the circular foot uinderneath so it gets air. you could extinguish the candle by simply putting ot don on a falt surfaces before that ;)
01:33 PM Loetmichel: flat
01:45 PM TurBoss: ºhello
01:46 PM TurBoss: What kind of aplifier I need to drive one of this https://es.aliexpress.com/store/product/40KHZ-50W-40KHZ-60W-Ultrasound-Transducer-Ultrasonic-Piezoelectric-Transducer-Cleaner/437150_32787230281.html?isOrigTitle=true
01:46 PM TurBoss: I will use a lm555 to generate the signal
01:47 PM TurBoss: 40 KHZ 60 W
01:47 PM TurBoss: ultrasonic transducer
01:49 PM IchGucksLive: im off
01:49 PM Loetmichel: lm555? noth NE555?
01:49 PM TurBoss: hmm posible
01:49 PM TurBoss: 555
01:49 PM TurBoss: the beast number
01:51 PM TurBoss: Ok I found a kit
01:51 PM TurBoss: https://es.aliexpress.com/item/50W-40KHz-Ultrasonic-Cleaning-Transducer-Cleaner-Power-Driver-Board-220VAC/32614245640.html?isOrigTitle=true
02:36 PM LeelooMinai: Hmm, anyone using something similar? It's a grinder, but tiny and you use the front of the disc, in this case diamond covered - to sharpen carbide, etc.: http://i.imgur.com/myn9S1I.png
02:36 PM LeelooMinai: Not sure if those things have some generic name.
02:42 PM LeelooMinai: Hmm, maybe it's some variation for a "tool grinder"
02:49 PM pink_vampire: LeelooMinai: how do you sharpen the flute with this device??
02:50 PM LeelooMinai: pink_vampire: I think this is more for simple sharpening - like scraper, some conical carbide piece, etc.
02:50 PM LeelooMinai: But, I guess you could sharpen a drill bit with it too, not sure.
02:51 PM LeelooMinai: You just need to set an angle I guess.
02:53 PM LeelooMinai: I was just curious, since I have a normal grinder, one of those with two wheels on the side, but when the guy turn this little thing on, it was super-quet. Seems it runs at slow RPM and I guess it must be pretty precise at keeping the wheel planar.
02:53 PM LeelooMinai: tunred*
02:53 PM LeelooMinai: Also, the wheel is steel from what it seems covered with diamond.
02:54 PM LeelooMinai: Hmm, he calls it "lapping wheel"
02:55 PM sync: yes, the accu finish is kind of a lapping machine
02:55 PM sync: it uses electroplated diamond wheels
02:55 PM LeelooMinai: BTW, don't know why, but I have to watch all those machinist videos at x2 speed, so they talk at normal human pace:)
02:55 PM sync: or abrasive ones
02:56 PM LeelooMinai: Hmm, lapping machine, ok - seems useful.
02:56 PM sync: you can mount the wheels on your regular grinder, but it runs pretty fast for such a disc
02:56 PM sync: it works tho
02:57 PM LeelooMinai: Right, well, when I turn my frinder on, it's like starting a plane engine...
02:57 PM sync: you can easily mount a disc on just a motor
02:57 PM LeelooMinai: Right, I guess it's just a matter of having the disk and it can be MacGyvered easily.
02:58 PM sync: if it is a cheap one, throw the wheels out and get good ones and dress them properly, it makes such a difference
02:58 PM sync: the discs can be had cheaply in china
02:59 PM LeelooMinai: sync: What does "dress" mean? I assume it's not putting little clothes on them? :)
02:59 PM sync: removing a layer so they cut free again
03:00 PM sync: as the absrasive gets loaded with crap
03:00 PM LeelooMinai: A, and how one does that? Chemicaly or mechanically?
03:01 PM LeelooMinai: Hmm, Chinese sell things like that: https://www.aliexpress.com/item/6-inch-150-mm-Grit-800-Diamond-coated-Flat-Lap-Disk-Grinding-Polish-wheel-Coarse/2030978580.html
03:02 PM sync: > chemically
03:02 PM LeelooMinai: But this looks more like what this guy had: https://www.aliexpress.com/item/6-inch-Aluminum-master-lap-for-Diamond-coated-Flat-Lap-Disk-Grinding-wheel/32330959376.html
03:02 PM sync: pls
03:02 PM LeelooMinai: sync: I mean with some liquid + cloth, I don't know... Did not mean dissolving:)
03:02 PM sync: pls
03:03 PM sync: the first one is the kind you want
03:03 PM LeelooMinai: I don't see how you can mechanically clean a diamond coated disk:/
03:03 PM LeelooMinai: With what...
03:03 PM sync: you cannot really clean the electroplated ones, but you talked about your regular grinder
03:04 PM sync: which uses abrasive discs
03:04 PM sync: you can dress resin bonded diamond wheels tho
03:04 PM sync: it is a bit more involved
03:04 PM LeelooMinai: No, I mean those lapping disks. You wrote you can buy good ones and "dress" them.
03:04 PM sync: as you should use a braked roller
03:04 PM sync: no
03:04 PM sync: read what I said
03:04 PM sync: in the context of your cheap grinder taking off
03:05 PM LeelooMinai: A, I see, well, right, I am not really that concerted with it - I use it for simple tools, like chiesels, so it does not matter really.
03:05 PM LeelooMinai: concerned*
03:06 PM LeelooMinai: Man, the amount of stuff Chinese sell in Ali is kind of scary...
03:07 PM sync: it matters a lot, your results will be better with a proper wheel
03:07 PM sync: it will also grind much colder
03:07 PM LeelooMinai: Yes, but I mean it's not worth for me - I mean I use those chiesels occasionally on wood.
03:09 PM sync: k, if spending 20€ and some time is not worth it for you not hating yourself, that's fine
03:09 PM LeelooMinai: sync: One has to prioritize a bit....
03:11 PM LeelooMinai: Hmm, I saw some tools they sell for engraving that have synthetic diamond for tip. Do tools like this wear normal way, as steel, or they have to "chip" to get a wear? I mean there's not much harder than diamond, so...
03:12 PM LeelooMinai: I mean there's not a lot material harder than diamond*
03:17 PM LeelooMinai: Hmm, epoxy has more compressive strength than concrete - weird.
03:19 PM SpeedEvil: That seems unlikely
03:19 PM Loetmichel: LeelooMinai: look at brass or copper handrails... even soft material( skin) can wear hard material over time.
03:20 PM LeelooMinai: Right, but I don't think a diamond rail would wear...
03:21 PM JT-Shop: is a plasma arc dc volts?
03:21 PM Loetmichel: LeelooMinai: even a diamond rail would wear
03:21 PM Loetmichel: eventually
03:22 PM Loetmichel: JT-Shop: plasma cutter?
03:22 PM Loetmichel: i would wager: yes
03:22 PM Loetmichel: considering that the cheap ones on ebay have + and - signs on the plugs
03:22 PM JT-Shop: not a cheap one but yea a plasma cutter
03:22 PM LeelooMinai: SpeedEvil: I read 10k psi for epoxy or even more for specialized, and only 5 for concrete.
03:23 PM SpeedEvil: http://epoxy-it.com/ss/typical-physical-properties/ - 11000PSI @2 weeks - west system epoxy failure.
03:23 PM SpeedEvil: yeah
03:23 PM * JT-Shop looks for the HyperTherm manual
03:23 PM SpeedEvil: I guess it is less relevant as epoxy is very bendy
03:23 PM SpeedEvil: and at yield will be quite compressed
03:24 PM LeelooMinai: Loetmichel: Well, I know water can kill rocks over long time, etc., but isn't there some threshold to remove atoms from a surface?
03:24 PM Loetmichel: there isnt
03:24 PM Loetmichel: just a probability
03:24 PM LeelooMinai: "that's weird":)
03:25 PM JT-Shop: ah yea the rated output voltage is 150VDC
03:25 PM JT-Shop: so yea my panel meter will work to see voltage
03:28 PM LeelooMinai: SpeedEvil: I guess you can counter it with mixing epoxy with some other stuff. I remember that are things like "glass filled epoxy", etc. (=fiberglass?)
03:29 PM LeelooMinai: So then maybe it would not compress that well.
03:31 PM LeelooMinai: Hmm, not sure if glass-filled is same as fiberglass, or fiberglass needs woven strands or what.
03:33 PM LeelooMinai: Seems it's a bit of a mess. Also see "glass-reinforced plastic"
03:34 PM JT-Shop: trying to use the scale component but I'm just not getting it... my thcad at 0v is around 115,500 at 82v its 340,000 and that is thousands for my eu friends
03:34 PM LeelooMinai: So microns? :)
03:35 PM JT-Shop: the very terse scale man page says basically in * gain + offset = out
03:35 PM JT-Shop: no a raw velocity signal from the TCHAD card
03:35 PM LeelooMinai: So linear mapping, yes
03:36 PM JT-Shop: but no matter what I try the out is always 0 because I'm a dummy and forgot to addf the function smaking forhead
03:50 PM LeelooMinai: Hmm according to this: http://www.engineeringtoolbox.com/young-modulus-d_417.html
03:51 PM LeelooMinai: epoxy is pretty squashy by itself, yes - sad.
03:53 PM sync: unsuprising
03:53 PM sync: most polymers are
03:53 PM LeelooMinai: Well, I mean I knew it's not like metal, but did not know it's as bad
03:55 PM LeelooMinai: I mean it has 1 or 2 there and lame fir wood has 17:)
03:55 PM LeelooMinai: Even mdf is twice better - fail
03:56 PM LeelooMinai: Ȯther weird things in that table - concrete is same as fir wood...
03:58 PM LeelooMinai: Which is a bit confusing and counterintuitive to me.
03:58 PM LeelooMinai: Because if someone gave me a piece of concrete to squash or a piece of wood, I would try with wood first:)
03:59 PM sync: wrong direction
04:00 PM LeelooMinai: Well, tensile is stretching, buy I got to that table from a place where it seemed to equate it stress regardless of direction.
04:01 PM LeelooMinai: I mean: "ratio of stress (force per unit area) along an axis to strain (ratio of deformation over initial length) along that axis""
04:01 PM LeelooMinai: It just uses axis in the definition, and does not say anything about the direction.
04:01 PM sync: so how is the youngs modulus defined?
04:01 PM LeelooMinai: And "It can be used to predict the elongation or compression of an object"
04:01 PM LeelooMinai: So - seems clear to me, that it applies to both cases...
04:02 PM LeelooMinai: sync: "Young's modulus is a measure of the ability of a material to withstand changes in length when under lengthwise tension or compression."
04:02 PM LeelooMinai: So no idea what's going on there...
04:05 PM sync: well, yes. you can use it to describe the bahaviour of materials in both directions but without specifying which direction it is useless. traditionally in machine engineering it always refers to tensile stresses
04:05 PM sync: as the materials are pulled apart
04:05 PM sync: concrete usually is pressed
04:06 PM LeelooMinai: Ok, but all I was interested in is how materials deform with force.
04:06 PM LeelooMinai: I mean what amount. And seems that concrete is not better than wood.
04:06 PM LeelooMinai: Probably worse, since fir is not really a hardwood
04:07 PM LeelooMinai: Which is weird, as it has small rocks inside:)
04:07 PM sync: hur, quicksand also ahs rocks inside
04:08 PM LeelooMinai: Yes, but they can move freely.
04:08 PM sync: so can the rocks in concrete
04:08 PM sync: it just takes more force
04:08 PM LeelooMinai: But even pure cement - I would not guess it deforms more than wood.
04:09 PM LeelooMinai: Semms pretty "hard" to me in comparison.
04:10 PM LeelooMinai: Maybe there's an error in that chart?
04:10 PM LeelooMinai: and 17 was supposed to be 170 or something...
04:11 PM LeelooMinai: I think it's a lie.
04:13 PM LeelooMinai: For exmaple, see this one: https://image.slidesharecdn.com/3nripaladhikary-icimod-inbarl-160307064938/95/bamboo-a-sustainable-alternative-to-wood-10-638.jpg?cb=1457333432
04:13 PM LeelooMinai: Here concrete is twice better than bamboo
04:13 PM LeelooMinai: Er, I mean timber
04:13 PM LeelooMinai: Which is more or less like fir
04:15 PM LeelooMinai: Why are those sites so lame... Isn't there some app that would five you material properties with nice interfacce and be complete more or less?
04:15 PM LeelooMinai: five=give
04:16 PM LeelooMinai: Hmm, I see something called matdat, but it's not free.
04:17 PM sync: of course not
04:19 PM LeelooMinai: It's not "of course" to me:/ I don't mean some creazy complete one - just for "normal" materials. Would think that such a database is public and not secret.
04:19 PM sync: so you do the research to find all the parameters and give the data out for free
04:20 PM sync: it's not secret, you can buy it
04:20 PM LeelooMinai: No, someone consolidates the data available into one app and it's free:)
04:20 PM sync: do it
04:20 PM LeelooMinai: I think you are missing the point:)
04:21 PM LeelooMinai: Because mine is that I would expect someone already has done it.
04:22 PM LeelooMinai: Hmm, there's the matweb site, but it's a bit cagey to me.
04:37 PM LeelooMinai: Ok, found one simple website, and they have 17 GPa for fir and 70 for concrete - so there's probably something wrong with that table I looked at first.
04:38 PM LeelooMinai: "Thanks, buggers"
04:40 PM Deejay: gn8
04:44 PM LeelooMinai: Hmm, "The Modulus of elasticity of Concrete usually depends on the proportiin of the aggregates and the cement matrix. Usually the modulus of elasticity of aggregates and the hardened paste varies between 45 GPa to 85 GPa and 10GPa to 30 GPa respectively. Therefore, Modulus of elasticity of Concrete composite usually lies between 30 GPa to 50 GPa."
04:46 PM LeelooMinai: I think I will just conclude my "reasearch" with concrete = a blob of stuff that hardens into something, hopefully, with properties that, well, who knows:)
04:46 PM JT-Shop: depends on the mix...
04:47 PM LeelooMinai: Yes, and probably weather, temperature, bit lof luck, etc. - I will leave worrying about this to the people who need to build structures from it:)
04:47 PM XXCoder: lee I remember reading about mixing carbon fiber into concerete making it slighly more flexible and much stronger
04:48 PM JT-Shop: not much luck involved only skill and science
04:48 PM LeelooMinai: Right, well, same with mixing stuff into epoxy. I guess what I am saying, that trying to find out info on what that stuff will behave like is a bit... challenging.
04:49 PM LeelooMinai: JT-Shop: Sounds cool, but, you can say that about anything:)
04:49 PM LeelooMinai: My point being that I thought it will be easier to research.
04:49 PM JT-Shop: if your talking about epoxy granite the strength is in the granite :)
04:50 PM XXCoder: I wanted to try that but epoxy is so expensive :(
04:50 PM JT-Shop: even a redneck knows the difference between a 5 bag mix and a 6 1/2 bag mix as strength goes
04:50 PM LeelooMinai: Right, I read about people using epoxy granite to build frames for CNC and even considered it, but had problem with finding a lot of epoxy for non $$$ price in Canada.
04:51 PM LeelooMinai: 2-3 tears ago I think.
04:51 PM JT-Shop: ouch
04:51 PM LeelooMinai: years
04:51 PM LeelooMinai: You can buy a tiny syringe of "something" at home depot, yes, for $20 per one:)
04:51 PM XXCoder: jt yeah ouch expensive
04:51 PM JT-Shop: amazing the brain can correct spelling and read the right words...
04:52 PM XXCoder: I always wanted to try epoxy alum chips paperweight
04:52 PM LeelooMinai: JT-Shop: Are you srue yuor biarin can do taht?
04:53 PM JT-Shop: aye, read that no problem
04:53 PM JT-Shop: XXCoder: got step one done for the external offsets on the plasma
04:54 PM JT-Shop: got the comp done to convert the thcad velocity to volts for the external offset comp
04:54 PM sync: XXCoder: it is pretty cheap if you buy lots of it
04:54 PM LeelooMinai: JT-Shop: lol, I was kidding - it's well known that if you type first and last letter in a word and randomixe the order of the rest, humans can still read it:)
04:54 PM XXCoder: sync: thats the problem. I dont want "lots" of it
04:54 PM JT-Shop: but we still feel compelled to correct our spelling here lol
04:55 PM LeelooMinai: There's even a site for that: http://www.ddginc-usa.com/can-you-read-this.htm
04:56 PM JT-Shop: our riding buddies want to go on a 400 mile trip the 4th but I'm just not up to it after 1900 miles in TX
04:56 PM LeelooMinai: but we siltl feel celpemlod to correct our selpling hree lol
04:56 PM JT-Shop: hree was a bti tough to decipher but it made it
04:56 PM LeelooMinai: Ok, celpemlod seems to be a bit too hardcore for my brain:)
04:57 PM * JT-Shop gives up on a 0-300VDC panel meter and puts the plasma box back
04:58 PM LeelooMinai: Reminds my of some weird abilities people can have. Like one girl could say any word backwards, no matter complexity, imediatelly - apparently she can see the letters in a word in her brain.
04:59 PM LeelooMinai: Anyone here have some supernatural ability? :)
04:59 PM LeelooMinai: "yes, we got on irc" :p
05:01 PM LeelooMinai: I think mine may be jumping from topic on any topic to another topic for hours and arriving at first topic and wondering why half a day passed:/
05:02 PM sync: LeelooMinai: if you are making epoxy granite, the aggregate usually is more expensive than the epoxy
05:03 PM LeelooMinai: Just pick up some nice rocks in a river? :/
05:03 PM LeelooMinai: Or smash granite tombstone at a cementary:)
05:04 PM sync: then you can also just cast pure epoxy
05:04 PM LeelooMinai: Or mom's granite countertop.
05:04 PM sync: you need properly sieved aggregate with the right distribution of grain sized to get any benefit
05:04 PM sync: otherwise your binder content is much too high
05:04 PM LeelooMinai: Well, that's not difficult to DIY
05:05 PM sync: is it?
05:06 PM LeelooMinai: I imainge you just make grids of wire with proper openings?
05:06 PM sync: you do not want to sieve yourself.
05:06 PM sync: or well, you can but it is not cost effective
05:06 PM sync: just buy the right aggregate
05:06 PM LeelooMinai: I could not buy the epoxy, so I abandoned it.
05:07 PM XXCoder: sync: someone boufght rotten grinte at work and filtered it out, seperating into 4 different sizes
05:08 PM XXCoder: then made epoxy granite with it. looked great.
05:08 PM sync: looks are unimportant
05:08 PM XXCoder: it was pretty strong too
05:09 PM sync: measured stiffness values are of importance
05:09 PM sync: everything else is guesswork
05:09 PM XXCoder: http://www.hobby-machinist.com/threads/epoxy-granite-eg-the-cheap-and-easy-way-i-hope.14217/
05:09 PM sync: or rather, measured parameters, as stiffness is not something that is somehow standardized
05:10 PM X704 is now known as tiwake
05:10 PM XXCoder: "You can develop hyper sensitivity to epoxy where none existed before. This can occur inside and outside your body... WEAR APPROPRIATE PPE!"
05:10 PM LeelooMinai: sync: If you fund proper tools to measure that for the whole channel, you will get all the data you need:p
05:10 PM XXCoder: what is ppe
05:11 PM LeelooMinai: Personal Protective Equipment it seems
05:11 PM phipli: yeah
05:11 PM LeelooMinai: Wear the pepe.
05:12 PM phipli: http://www.nichom.co.za/wp-content/uploads/2013/10/Gear.gif
05:12 PM XXCoder: interesting. and yes don't risk epoxy allegy. basically EVERYTHING has epoxy.
05:12 PM sync: LeelooMinai: no, but phrases like "it looked great" or "it was pretty strong" have no meaning
05:13 PM LeelooMinai: Well, it has some meaning - it probably means it did not fall apart on touch:)
05:13 PM XXCoder: indeed
05:13 PM sync: LeelooMinai: you should be easily able to buy west system epoxy in .ca
05:14 PM LeelooMinai: sync: Right, I remember I checked that, but price + shipping were sad.
05:14 PM sync: it's adequate stuff
05:14 PM sync: the price is ok
05:14 PM sync: it is in the middle of the range
05:14 PM sync: 135 cad for a gallon of resin is reasonable
05:16 PM LeelooMinai: Right, just checking. Well, depends - if you need some big construction for CNC, you will need probably a lot more.
05:16 PM LeelooMinai: Not sure what the normal ratios are.
05:17 PM XXCoder: 135 cad for gallon dang
05:18 PM XXCoder: gallon after mixing or 2 of one gallon each of binary mixure?
05:18 PM sync: I think that is the 5:1 system
05:18 PM sync: I mean, there are cheaper epoxies, as I said
05:18 PM sync: but west system works
05:18 PM XXCoder: 5:1 interesting. so basically gallon and one less than liter
05:19 PM sync: LeelooMinai: 80-90% aggregate by volume are common
05:22 PM sync: there are ep systems that are in the range of 15$ per kg, if you get 30kg, it is not so bad after all
05:22 PM sync: also compared to the cost of a cast iron casting or the requirements for the mold
05:32 PM JT-Shop: Andy gets stuff cast all the time
05:35 PM sync: yeah, but it is not a machine base
06:05 PM JT-Shop: say goodnight Gracie
06:21 PM LeelooMinai: Ok, ordered a glass tube with water inside from China for $10:)
06:22 PM LeelooMinai: aka "precision bubble vial"
06:23 PM LeelooMinai: https://www.aliexpress.com/item/Size-13-70mm-Accuracy-10-2mm-High-Precision-bubble-level-Glass-inclinometer-Tubular-Bubble-Level-Cylindrical/32559326391.html
06:24 PM LeelooMinai: Not really sure about 10"/2mm - I mean it's 10 seconds, but 2mm - that's probably spacing between the marks?
06:25 PM DaViruz: i thought they mean 2mm over a length of 10 inches
06:25 PM LeelooMinai: That would be weird... I mean why 10 inches... It's not even attached to anything.
06:26 PM LeelooMinai: It would make sense for 10 inches base maub, but for a vial spec?
06:26 PM DaViruz: i suppose 10 arcseconds makes more sense if it's supposed to be high precision
06:26 PM LeelooMinai: maub=maybe
06:26 PM DaViruz: base length dosn't have much to do with it though
06:26 PM LeelooMinai: Right, also why would they mix inches in mm
06:26 PM DaViruz: i have a 0.01mm over 1m level which is not 1m long
06:27 PM DaViruz: yeah i agree it's probably arcseconds
06:27 PM LeelooMinai: DaViruz: Well, I saw some specs on whole levels and they often specify ase length
06:27 PM LeelooMinai: base*
06:28 PM LeelooMinai: Hmm, there's 6 spaces betwwen marks on the left and right, so that 12mm*2 = 24mm. So that would leave 44mm fo the rest - it seems plausible, kind of.
06:29 PM LeelooMinai: I am thinking to attach it to some precise thing, liek parallel, and adding some adjustment and hopefule have nice level for fraction of the cost.
06:30 PM LeelooMinai: Since I was impressed that one guy was using a precision level to verify straight edge.
06:32 PM LeelooMinai: Well, I guess I don't even need a precise anything - I mean I can just have balls as "feet" for the base and measure oncline between those points.
06:33 PM LeelooMinai: incline*
06:33 PM LeelooMinai: By balls I mean ball bearing balls - steel or ceramic, whatever.
06:33 PM LeelooMinai: Or something sharp mnaybe - like carbidevscriber tips.
06:36 PM LeelooMinai: Hmm, so, if I had feet 100mm apart, 4 inches, then, 1/3600 angle would show...
06:37 PM LeelooMinai: Er, 0.4 μm? o_O
06:38 PM LeelooMinai: Unless I miscalculatd something
06:39 PM LeelooMinai: Sounds a bit crazy to me
06:41 PM LeelooMinai: Doesn't seem so... Is this even possible? I mean for those vials to be that accurate.
06:42 PM DaViruz: seems correct
06:42 PM XXCoder: leveling is one of most easiest to be accurate
06:42 PM XXCoder: I think it was first percision measurement system?
06:42 PM XXCoder: or was it balance that was first?
06:42 PM LeelooMinai: Well, ok, but 400 nanometers - come on... That's like lieght wavelength...
06:42 PM DaViruz: 5µm over 1m, i think i've seen levels with that resolution
06:43 PM XXCoder: well techinically one meter is light wavelength too
06:43 PM XXCoder: theres no max on that
06:43 PM LeelooMinai: I mean visible light:p
06:43 PM XXCoder: 4000 nm is pretty close lemme look
06:43 PM XXCoder: er 400
06:43 PM DaViruz: 1 meter is not light. thats radio
06:43 PM LeelooMinai: RIght, pretty sure that's almost a color
06:43 PM XXCoder: violet
06:43 PM DaViruz: with a good margin
06:44 PM XXCoder: DaViruz: its just matter of definition, its all same
06:44 PM DaViruz: the definition of light does not include electromagnetic waves with a wavelength of one meter
06:44 PM LeelooMinai: Ok, I guess I am a bit confused how one can make a glass tube that is precise to allow this kind of measurement.
06:45 PM XXCoder: the less bend it is more accurate it is, up to a point where it reaches zero
06:46 PM LeelooMinai: Is it elongated by gravity or something?
06:46 PM LeelooMinai: Not sure how they make them.
06:46 PM XXCoder: good question, never looked up how they make em
06:47 PM LeelooMinai: https://www.youtube.com/watch?v=RyDlYj0_Z4w
06:47 PM XXCoder: how to make it!
06:47 PM LeelooMinai: x2 speed - go go go
06:47 PM LeelooMinai: I need x3
06:48 PM LeelooMinai: Lame, they are curved inside and that all - probably some carpenter grade:9
06:49 PM LeelooMinai: Well, they test them with camers for defects at least.
06:49 PM XXCoder: hmmmm some types looks like barrel type not bend
06:49 PM XXCoder: in order to support any side I guess
06:49 PM LeelooMinai: But still, that's probably not how they make the one I got..
06:49 PM XXCoder: yeah
06:51 PM XXCoder: well may be similiar, if its pressure blow out to barrel, it could be quite precise?
06:51 PM XXCoder: bend type dunno
06:52 PM LeelooMinai: This place seems to have a lot of those: https://www.leveldevelopments.com/products/vials/ground-vials/
06:53 PM XXCoder: 2 arc seconds to 2 arc minutes
06:53 PM LeelooMinai: Ok, so I guess it makes that Chinese one plausible at least
06:54 PM LeelooMinai: The lowest I saw there was 4", so ok
06:55 PM LeelooMinai: "precision ground and polished" - a bit of lol, for a glass vial...
06:56 PM LeelooMinai: Unless they really grind them somehow inside....
06:56 PM XXCoder: lapping maybe
06:56 PM XXCoder: then do whatever to shape it afterwards?
06:57 PM XXCoder: english version found https://www.youtube.com/watch?v=0-NIIlfyM0o
06:57 PM LeelooMinai: Well, I don't know... I gues if they had some diamond bit and super-precise machine...
06:57 PM XXCoder: yeah I kinda doubt it too
06:57 PM LeelooMinai: Er, what was my version - Chinese?
06:57 PM XXCoder: no, but not english either
06:57 PM LeelooMinai: "I don't know I can understand Chinese"
06:58 PM XXCoder: was voice in english?
06:58 PM LeelooMinai: XXCoder: o_O
06:58 PM LeelooMinai: It's a perfect English - woman voice
06:58 PM XXCoder: ah I wouldnt know
06:58 PM LeelooMinai: A, right, you cannot hear, right?
06:58 PM XXCoder: yeah
06:59 PM LeelooMinai: Right, so I don't know, but that was TV-quality voice - not sure why they have two version. The second one a man:)
06:59 PM XXCoder: interesting
07:00 PM LeelooMinai: O, that site has 2mm as the usual distance between marks, so that checks my hypothesis too.
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07:12 PM LeelooMinai: Hmm: https://www.stahl-libellen.com/Technology_36.html
07:12 PM LeelooMinai: They also mention they grind them.
07:14 PM XXCoder: grinds inside apparently
07:14 PM XXCoder: so bubble resoponds same all around
07:15 PM LeelooMinai: When I get that vial, I will make some experiments on the surface plate and compare what the vial shows with my most precise tools.
07:16 PM LeelooMinai: If it arrives in one piece that is.
07:17 PM DaViruz: if you have gauge blocks it should be pretty simple to test the resolution
07:19 PM roycroft: the thing i like the most about gauge blocks is that, almost 150 years after they were invented, we still don't know what holds them together
07:19 PM XXCoder: magic
07:20 PM roycroft: there are theories
07:20 PM roycroft: but nobody has been able to prove any of them
07:20 PM XXCoder: I usually uyse paper to clean em if they dont stick
07:20 PM roycroft: they Just Work(tm)
07:20 PM LeelooMinai: Some people know - they are hold together by Jesus
07:20 PM LeelooMinai: held*
07:24 PM LeelooMinai: I saw super-flat surfaces an also glide over surface plate on air cussion - was pretty neat.
07:24 PM LeelooMinai: an=can
07:25 PM XXCoder: LeelooMinai: heh my boss demonsted that after rock re-calbration with new 90 degree cast iron thing
07:25 PM XXCoder: he moved it, and it almost went over edge before he caught it
07:25 PM XXCoder: he almost missed too lol
07:26 PM LeelooMinai: "The sound of a $500 cast iron straight edge hitting a concrete floor"
07:27 PM LeelooMinai: They say it's lauder then a lion roar:)
07:28 PM XXCoder: expensive sound im glad to never hear even if I was nearby or caused it LOL
07:28 PM LeelooMinai: Well, I am pretty sure you would feel the vibration though.
07:29 PM XXCoder: expensive vibration thats for sure
07:29 PM LeelooMinai: And if you want to feel more, just drop the surface plate:)
07:30 PM LeelooMinai: I bet someone, somewhere, did that when installing one on a stand - Murphy Law tells me that.
07:30 PM XXCoder: yeah no question
07:31 PM XXCoder: class A BIG slab even
07:31 PM LeelooMinai: And those people are probably still standing there - turned to stone figures:)
07:31 PM XXCoder: lol
07:31 PM sync: a cast iron straight edge hitting the floor is not so bad, you can always rescrape it
07:32 PM LeelooMinai: Or re-srappe it:)
07:32 PM sync: scraping stuff to a degree where it floats is suprisingly easy
07:32 PM LeelooMinai: You can also melt it in a furnace and try again:p
07:34 PM sync: you can.
07:34 PM sync: but making a new granite straight edge is more work
07:34 PM -!- #linuxcnc mode set to +v by ChanServ
07:57 PM kyle___: aw I missed the gage block conversation
07:57 PM kyle___: gage blocks are cool
08:08 PM Mac-Phone: hello
08:09 PM Mac-Phone is now known as MacGalempsy
08:09 PM MacGalempsy: ahhh
08:24 PM -!- #linuxcnc mode set to +v by ChanServ
08:25 PM Crom: I just watched a video in the last couple of days.. surface ground sharpening stones.
08:26 PM Crom: changes the characteristics of the stones completly
08:41 PM LeelooMinai: But are they ground with normal wheels or sufrace ground wheels - that is a question:)
08:42 PM Crom: diamond surface grinding wheels
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08:42 PM LeelooMinai: No comment... http://i.imgur.com/SBlwvdT.jpg
08:44 PM Crom: not enough of them...
08:46 PM malcom2073: That man must have a lot of nails
08:47 PM LeelooMinai: Or short memory:)
08:47 PM Crom: https://www.youtube.com/watch?v=DVLXsq7pi9Y
08:47 PM Crom: precision ground toolroom stones
08:47 PM LeelooMinai: O no, not robrenz - he is insane:)
08:48 PM XXCoder: he needs hammerspace
08:50 PM LeelooMinai: robrenz would machine those hammers to 1 micrometer precision and balance them with the handle using apothecary scale
08:51 PM LeelooMinai: Then spend the rest of the month calculating the best way to attach a sticker with a logo on the handle.
08:52 PM roycroft: crom: i have a diamond lapping plate to flatten my japanes ewater stones
08:53 PM roycroft: japanese
08:53 PM LeelooMinai: Next robrenz video - how to grind dimond grind wheels with pixie dust
09:02 PM XXCoder: interesting
09:03 PM roycroft: https://www.amazon.com/DMT-Diamond-Machining-Technology-DIAFLAT/dp/B005FUHTDG
09:03 PM roycroft: that's what i have to flatten my stones
09:04 PM LeelooMinai: And that's what I use: http://www.busybeetools.com/products/diamond-sharpening-stone-3pcs-2in-x-6in.html :p
09:05 PM LeelooMinai: Sharpened a pencil with those once.
09:09 PM XXCoder: dude he ground on caliper
09:10 PM XXCoder: insane. mistake there and bye $150
09:10 PM LeelooMinai: I established long time ago that he is not very normal:)
09:13 PM LeelooMinai: Hmm, I am weird - I forgot that I have reciprocating saw and did not occur to me that those can be also used to cut steel...
09:13 PM LeelooMinai: With proper blade that is.
09:19 PM XXCoder: grinding grindstones heh
09:21 PM roycroft: i am so out of shape it's pathetic
09:21 PM roycroft: my doctor gave me the go-ahead to start doing some aerobic exercise
09:21 PM roycroft: so i went on a bike ride today
09:21 PM roycroft: i rode all of 6km
09:21 PM roycroft: er, 10km
09:21 PM roycroft: it took me a half hour, and i was exhausted after
09:21 PM roycroft: when i was training, back in a different life, i would ride 100km/day
09:22 PM XXCoder: I used to go 50 mile bicycle trips
09:23 PM XXCoder: but not daily just once a week
09:23 PM pink_vampire: is there a reason why not to use the diamond stone to sharpen the tools??
09:24 PM roycroft: well i'm going to take it kind of easy for a while
09:25 PM roycroft: i think 30 minutes at a time is a good go
09:25 PM roycroft: i'll just start pushing myself slightly harder so i'm going a longer distance in that time
09:26 PM Crom: pink_vampire: the carbon in the tools has an affinity to the cardon ib the diamond
09:26 PM XXCoder: is he making insrts?? https://www.youtube.com/watch?v=6CjOlhWpmxE
09:27 PM pink_vampire: XXCoder: no, just the holders
09:28 PM XXCoder: you skipped adread I see heh or watched video already?
09:28 PM pink_vampire: he use the surface grinder for 99% of the stuff.
09:28 PM pink_vampire: I know this channel
09:29 PM XXCoder: ok
09:38 PM pink_vampire: XXCoder: are you working on some project now?
09:38 PM XXCoder: nah whats up
09:38 PM XXCoder: techinically I do but still too down to do anything
09:38 PM pink_vampire: working on very complicated cut
09:39 PM pink_vampire: very close to the clamping
09:39 PM pink_vampire: I need to make sure I'm not going to crash the machine
09:41 PM XXCoder: yeah
09:41 PM XXCoder: most workers at my work always dry run and walk in each tool first make sure it seems ok
09:42 PM XXCoder: it may still be wrong and scrap part but in least it wont shatter any tool or jaws
09:42 PM LeelooMinai: pink_vampire: Move it up in Z axis by some distance and just cut air imo.
09:42 PM pink_vampire: I'm modeling everything
09:42 PM pink_vampire: then simulate
09:42 PM LeelooMinai: If you see it going down, panick button:)
09:45 PM pink_vampire: someone use them?
09:45 PM pink_vampire: https://www.harborfreight.com/silver-and-deming-drill-bit-set-8-pc-61802.html
09:52 PM roycroft: those silver and deming bits are ok
09:52 PM roycroft: not great
09:52 PM roycroft: but not as bad as most hf drill bits
09:52 PM roycroft: they are ok for a starter set
09:53 PM XXCoder: I find it interesting that he never slides stuff off precision blocks and vee blcks so on
09:53 PM roycroft: but if you start using them regularly you'll start replacing them with better ones
09:53 PM XXCoder: he only lifts em off
09:54 PM cradek: drilling with a bit bigger than your drill chuck's capacity never works well. even good s&d drills are bad
09:55 PM cradek: you will just spin them in your drill chuck, ruining the drill bit and making the drill chuck worse
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09:57 PM pcw_home: I've done that a few times :-(
10:00 PM cradek: they go to 1"! You just can't drill a 1" hole in metal without a BIG drill press and SLOW spindle speed.
10:01 PM cradek: or you could put it in a hand drill and try! haha
10:01 PM cradek: sometimes you can drill nice triangles in sheet metal that way, just rinse all the blood off afterward
10:02 PM pink_vampire: cradek: I want them to clear material for pocket holes
10:03 PM cradek: in what material?
10:10 PM roycroft: holes that size in sheet metal are best made with a chassis puch
10:10 PM roycroft: punch
10:11 PM XXCoder: or milled?
10:11 PM pink_vampire: solid cold rolled steel, and solid aluminum.
10:12 PM pink_vampire: cradek: ^
10:14 PM cradek: to drill a 1" hole in CRS you need a spindle that goes maybe 190 rpm and probably 2hp spindle and a lot of pressure
10:14 PM Crom: hole saw with carbide teeth
10:15 PM pink_vampire: what about drill small hole, then make it bigger, and bigger...
10:16 PM cradek: it can help to do one small hole a bit bigger than the web of the big drill you want to use for the final size, and then jump to the final size
10:16 PM pink_vampire: 3/4" drill is the max i need
10:16 PM cradek: but more steps doesn't work very well
10:16 PM pink_vampire: even 5/8" will be fine
10:16 PM cradek: what's your slowest spindle speed and how much power do you have?
10:16 PM roycroft: when doing stuff like that it's a matter of how much you can drill before you have to get out the boring head
10:17 PM roycroft: if you have a small mill you'll be getting the boring head out sooner rather than later
10:17 PM cradek: on a lower powered machine, a boring head is the way to get a big hole in the right place
10:17 PM cradek: yes
10:17 PM XXCoder: center drill, drill then boring head
10:17 PM pink_vampire: I'm use the mill as a press some times.. and I know it push with more then 250 lbs.
10:17 PM roycroft: and you won't be taking 0.050" passes with the boring head on a small mill
10:17 PM XXCoder: then finally reamer if such precision is needed
10:18 PM XXCoder: some parts at work also need 5th stage, lapping because -0 + .0005" is hard tol to reach on mill
10:19 PM roycroft: you can hold a tenth on a good mill with a good boring head
10:20 PM pink_vampire: I can plunge the material with the end mil.. but it is much better to just drill it, and then bake it larger with the end mill.
10:20 PM roycroft: tough with a bridgeport clas mill though
10:20 PM pink_vampire: we are talking cnc here... :)
10:25 PM roycroft: we don't always talk cnc here :)
10:26 PM XXCoder: omg grinder guy using mill lol
10:26 PM XXCoder: hes definitely interesting
10:26 PM XXCoder: I wonder what he do at work
10:27 PM XXCoder: "basically we are now deburring the deburr"
10:36 PM XXCoder: https://www.youtube.com/watch?v=5RZw5bJd5TQ interesting.
10:43 PM pink_vampire: I like when I see conventional cuts that look like clime cuts
10:44 PM LeelooMinai: XXCoder: They fired him when they found he was secretely grinding all the threads on every machine screw in the factory.
10:44 PM pink_vampire: LeelooMinai: O_o
10:46 PM LeelooMinai: pink_vampire: nm :p
10:46 PM pink_vampire: :(
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11:18 PM Ralith is now known as Ralith_
11:31 PM XXCoder: LeelooMinai: LOL
11:35 PM XXCoder: LeelooMinai: then company went under because screws suddenly lost quality eh ;0
11:37 PM XXCoder: hes modifing expensive mitoyoto calipers!
11:37 PM XXCoder: dang
11:38 PM LeelooMinai: They are probably his "cheap" ones.
11:38 PM XXCoder: he is very good, so his pay probably 2 hours to cover those 2 mitoyoto lol
11:39 PM LeelooMinai: I remember once Dave from EEVblog mentioned that his camera arm is not very ridfid or something like that.
11:40 PM Wolf_: 0.o
11:40 PM LeelooMinai: rigid*
11:41 PM LeelooMinai: ANd then robrenz made a response video about how to solve that problem. I mean lol - he made the arms from carbon tubing and some crazy OCD trip about how to make the joints from machined balls or something like that - it was weird.
11:42 PM XXCoder: wow
11:42 PM LeelooMinai: I mean just lol: https://www.youtube.com/watch?v=LWUHlyi-8Mc
11:42 PM LeelooMinai: Dave probably watched it and though "wait, what's going on" :)
11:43 PM XXCoder: wow
11:43 PM XXCoder: now thats tough mount arm
11:43 PM XXCoder: sadly that video has no autocaptions
11:43 PM LeelooMinai: lol, well, if you use carbon fiber tube like 2 inches in diameter, yes:p
11:44 PM Wolf_: *clicks youtube link
11:44 PM Wolf_: holy shit lol
11:44 PM XXCoder: he precision ground balls
11:45 PM Wolf_: lmao that thing is so over built its not funny
11:45 PM LeelooMinai: I think he thought that Dave wants that arm for NASA:)
11:46 PM Wolf_: that little camera he could have just used a noga arm lol
11:46 PM XXCoder: indeed.
11:46 PM XXCoder: I have magnetic base but no good arm I need to get that. sadly its been useless because my machine is all alum bleh
11:46 PM Wolf_: lol
11:47 PM XXCoder: he uses rod set screws to make arm segement. smart
11:47 PM XXCoder: (ignoring the massive overkill part)
11:48 PM Wolf_: carbon fiber plates for the balls
11:49 PM XXCoder: thought plates was just metal
11:49 PM XXCoder: dang
11:49 PM LeelooMinai: I always lol in his videos when he looks at some problem, then presents some crazy solution and goes to a room full of machines that cost more than most people houses.
11:49 PM LeelooMinai: DIY, right:p
11:49 PM Wolf_: and he was talking about lapping the steel plate he has under the bench so the magnet will stick better
11:51 PM LeelooMinai: I can imagine him sitting to dinner with his wife, she suddenly looks around confused and he is gone, later found doing something strange to a fork with a grinder.
11:51 PM XXCoder: probably that extreme
11:51 PM XXCoder: *not
11:51 PM pink_vampire: hi Wolf_!
11:52 PM Wolf_: hiya pink_vampire =)
11:52 PM pink_vampire: long time..
11:52 PM XXCoder: wolf ya been quiet for while
11:52 PM dioz: that dudes sink is dirty as fuck
11:52 PM LeelooMinai: Or she finds him having nightmare and wakes him up and he mumbles "it's out 1 mil, it's out 1 mil..."
11:53 PM Wolf_: yeah, been working on nice weather stuff, like shooting competitions
11:56 PM XXCoder: I see ponental sequel to camera arm.. "Thanks Mark, still using the arm to do all the videos. I have a rev2 in the works and will video it as well. I suggest using epoxy on the edge of the tube where it contacts the ball instead of Loctite as shoen in the video. Thanks for commenting and watching!"
11:57 PM XXCoder: to one comment about noga arms: "Are your Noga arms that long? Mine is barely long enough as is."
11:59 PM Wolf_: yuck dry cutting CF