#robotics Logs
Dec 26 2017
#robotics Calendar
12:00 AM rue_mohr: hey ,tommmroow is boxing day
12:03 AM rue_mohr: led lights?
12:03 AM rue_mohr: if anyone is open
12:03 AM rue_mohr: dude I think they coat the aluminum foil in something
12:03 AM rue_mohr: fireproof plastic?
12:03 AM rue_mohr: I didn't say I knew what
12:03 AM rue_mohr: how am I gonna get a clear head for a bit?
12:03 AM rue_mohr: dunno
12:03 AM rue_mohr: last time you said "build things, anything, it dosn't matter"
12:03 AM rue_mohr: doyou think that still stands?
12:03 AM rue_mohr: prolly, or you would have left a post-note or something to it
12:05 AM rue_mohr: if all your good at right now is producng project data, do that, get as much detail as you can for the summer when we can build things
12:05 AM rue_mohr: yea but I could write a book
12:05 AM rue_mohr: go for it
12:06 AM rue_mohr: ok, but now I sleep
12:06 AM rue_mohr: when your dead your gonna catch up on so much sleeep
12:06 AM rue_mohr: then, its all you will be able to do
12:06 AM rue_mohr: its almost all I can do now
12:15 AM mbrumlow: i dint want to go to bed :(
04:52 AM anonnumberanon: mbrumlow, so you can build that system to see if you like it and then use it or not for your robot, to get you doing things
06:48 AM Tom_L: rue_mohr, the ballscrew you posted does not come with endblocks or bearings or shaft coupler for the stepper
06:49 AM Tom_L: that is why i went with this kit because it has all the elements needed
06:49 AM Tom_L: https://www.ebay.com/itm/US-Ship-Square-Linear-rail-guide-3-Ballscrew-1605-400-700-1000-BKBF-Nut-CNC-Kit/142629705422?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%26asc%3D41376%26meid%3D06e1614ca91140f8a1dd18d6f79c93cc%26pid%3D100011%26rk%3D1%26rkt%3D3%26sd%3D253246525320&_trksid=p2047675.c100011.m1850
06:49 AM Tom_L: everything else you price will be more
06:49 AM Tom_L: for the same elements
06:50 AM Tom_L: some say free shipping, some don't but it all adds up to that price
06:51 AM Tom_L: 300 mm isn't very much
06:51 AM Tom_L: i figured if i was gonna bother with it i may as well get some decent travel
06:53 AM Tom_L: one end for that screw is a pillowblock and bearing and the other end is a pillowblock with 2 bearings and a backlash nut
06:54 AM Tom_L: the end with just the bearing has a C clip on the shaft, the other end uses the backlash nut
06:55 AM Tom_L: so if you buy the pieces, you got to know what fits what
06:55 AM Tom_L: and i wasn't sure about that the first time just like you aren't
07:50 AM lucas_ai: does any of you have experience coding android apps for DJI drones?
08:33 AM lucas_ai: I'm looking for a python programmer for a drone project. Where could I find someone for $2usd per hour?
08:36 AM AchiestDragon: you would probabaly find them looking for at least one zero after the 2 and before the point
08:37 AM robotustra: ha ha
08:37 AM robotustra: or do it yourself
08:38 AM robotustra: kids in kindergarden get's more bux per hour
08:43 AM lucas_ai: robotustra: false
08:43 AM lucas_ai: I already have coders for $2/hr. I'm looking for more, indian ones
08:48 AM robotustra: lucas_ai, do you think a lot of indian coders who get 2$/h sit in IRC channel?
08:52 AM lucas_ai: robotustra: I guess not, but just trying
08:57 AM AchiestDragon: you know india is fast becomming a 1st world country , so should not be long before they would want better pay , better working conditions , unions and pentions ! you should not take the piss out of them its what causes half the hate
08:58 AM lucas_ai: AchiestDragon: there's also pakistan, bangladesh, etc. don't worry
09:07 AM robotustra: lucas_ai, good luck
09:08 AM lucas_ai: thanks
09:10 AM robotustra: may be you'll find curious student there
09:11 AM AchiestDragon: no doubt his drones would all end up comeing with a copy of teamspeak installed
09:12 AM robotustra: I hope that indian student is familiar with PID, Euler angles and quaternions
09:16 AM AchiestDragon: lucas_ai: what country you in ?
09:17 AM veverak: why would anyone help somebody that wants to exploit low-wage people
09:18 AM robotustra: veverak, I don't want
09:18 AM robotustra: especially if you are in the same market
09:18 AM lucas_ai: AchiestDragon: currently china
09:18 AM lucas_ai: veverak: maybe because it's not exploitation?
09:19 AM robotustra: all engineers should get proper salary
09:19 AM robotustra: no matter where they live
09:19 AM veverak: exactly
09:19 AM veverak: lucas_ai: does not seem so
09:19 AM veverak: you came to channel and ask for low wage people
09:19 AM robotustra: of cause the living cost in India is a bit lower than in US
09:20 AM AchiestDragon: yea what rate you on $2 per hr also , you should be show the workers you can live on your decent wage
09:20 AM veverak: from developing countries out of the box
09:20 AM robotustra: as soon as I know, the good salary for Indian engineer is about 1/2 of it from Canadian
09:21 AM robotustra: but it's defenetly much bigger than $2/h
09:21 AM robotustra: $20/h - is already interesting
09:22 AM robotustra: and you'll not find anyone in china for this money
09:23 AM robotustra: because china does not do much own design, they prefer to borrow designs
09:23 AM robotustra: making designs is very time and money consuming process, China could not afford it
09:24 AM lucas_ai: AchiestDragon: i barely spend any higher than $2 per hour
09:24 AM veverak: what has the amount of money you spent to do with a normal wage for person?
09:24 AM veverak: :)
09:25 AM lucas_ai: veverak: there's no "normal" for the whole world
09:27 AM robotustra: there is a cost of leaving
09:28 AM robotustra: if you pay $2/h - in means that your work will be done in 10 times longer term
09:28 AM lucas_ai: robotustra: that's fine by me... gives more room for feedback from me
09:29 AM veverak: lol :)
09:29 AM lucas_ai: robotustra: but usually it's not exactly like that. I can guide them step by step, so i'm adding value in there. they can also do things like talk or read online, that takes more time
09:29 AM veverak: so generous!
09:29 AM lucas_ai: thanks!
09:29 AM veverak: (irony, what you describe is standard)
09:29 AM lucas_ai: not standard
09:30 AM lucas_ai: big companies overpay because they can't handle micromanaging employees
09:30 AM robotustra: ше шы
09:30 AM robotustra: it is
09:30 AM veverak: anyway, thing is that if you provide something that is half of minimal wage in my country
09:30 AM veverak: I do not have even single notion of helping you
09:30 AM lucas_ai: veverak: what's your country?
09:30 AM veverak: as many other people
09:30 AM veverak: just keep that in mind
09:30 AM veverak: lucas_ai: czech republic
09:30 AM robotustra: I fuck off managers who try to do micromanagment on me
09:30 AM lucas_ai: I'm hiring for India, not freaking europe
09:31 AM lucas_ai: robotustra: because you can afford to. if you were unskilled you would need micromanagement
09:31 AM robotustra: if you are unskilled - get your skills first
09:32 AM robotustra: if you'll micromanage ppl - they will never learn something
09:32 AM veverak: lucas_ai: that does not make me wanna help you when you provide 1/10 of the money one can get easily get here
09:32 AM veverak: and czech republic is known as "cheap programmators in EU"
09:32 AM robotustra: never learn anything*
09:32 AM veverak: anyway, detach :)
09:33 AM AchiestDragon: and trained employiees are no use because they what cost too much to employ , so leave as soon as there any good , to setup companies of there own that well end up in direct compatition
09:33 AM lucas_ai: robotustra: false. micromanaging teaches them
09:33 AM robotustra: veverak, he thinks that india is so far from other world
09:33 AM lucas_ai: veverak: cheapest in EU is not average in india
09:33 AM veverak: robotustra: well
09:33 AM veverak: point is that with people like him it will slow donw the progress
09:34 AM lucas_ai: AchiestDragon: exactly
09:34 AM SpeedEvil: https://www.youtube.com/watch?v=YXy6oX1iNoA 3d printed 'rifle' according to AI vision.
09:34 AM robotustra: lucas_ai, you are in the captivity of your own illusions.
09:34 AM lucas_ai: veverak: false
09:34 AM lucas_ai: robotustra: how?
09:34 AM SpeedEvil: (a turtle that is misclassified) https://arxiv.org/abs/1707.07397
09:35 AM robotustra: lucas_ai, how lond do you running your business?
09:35 AM lucas_ai: robotustra: few months
09:36 AM robotustra: how many ppl work on you?
09:36 AM lucas_ai: robotustra: 4 actually working
09:36 AM robotustra: getting $2/h?
09:37 AM robotustra: did you made any product yet?
09:37 AM lucas_ai: $2, $3, and $1
09:37 AM lucas_ai: we're making them
09:37 AM robotustra: when the final product will go to production stage?
09:39 AM lucas_ai: no idea
09:39 AM lucas_ai: you can try it, robotustra
09:39 AM lucas_ai: http://notpcbro.com
09:39 AM lucas_ai: we're making many products
09:41 AM robotustra: how many products you have already produce?
09:42 AM robotustra: what is this?
09:42 AM lucas_ai: robotustra: just starting now
09:43 AM robotustra: lucas_ai, do you do something other than software?
09:43 AM robotustra: do you produce hardware stuff?
09:43 AM lucas_ai: robotustra: yes, hardware
09:44 AM lucas_ai: robotustra: but it's harder to find low rates unless I have the full team in that place
09:44 AM lucas_ai: robotustra: lowest i've paid for hardware is $1000 usd per monht
09:44 AM lucas_ai: month
09:44 AM robotustra: what is your hardware?
09:44 AM lucas_ai: robotustra: perhaps i'll find for less in india, physically there
09:44 AM lucas_ai: robotustra: we've been making some drones
09:44 AM AchiestDragon: since when is santa carla in china 138.68.9.230 geo ip
09:45 AM lucas_ai: AchiestDragon: in china i need to use a VPN
09:45 AM lucas_ai: robotustra: here's our hardware project: http://adia.tech
09:46 AM AchiestDragon: ho , 3d party subcontracting out under the firewall , local developers cost too much even in china
09:48 AM robotustra: so you are designing YET_ANOTHER_DRONE_WITH_AI ?
09:50 AM robotustra: I would say it will be very difficult to get into drone market
09:50 AM lucas_ai: AchiestDragon: what do you mean? yes, in china they cost a bit, and they don't speak english
09:50 AM lucas_ai: robotustra: yes, but better
09:50 AM robotustra: and one more thing - in most developed countries drones should be manned
09:50 AM AchiestDragon: no , by the looks hes prob going to employ lots of indians to emote pilot them from a call center , as its cheaper than developing acutal ai
09:51 AM robotustra: true
09:51 AM robotustra: I don't see that the design of your drone is better than existing ones
09:52 AM veverak: lol
09:52 AM veverak: why the hell anybody able to code and who knows english would work for 2$ ;) :D
09:52 AM robotustra: the body seems is too heavy already
09:53 AM robotustra: agh... good luck, I come back to my youtube
09:55 AM lucas_ai: AchiestDragon: why hire a call center when cheap developers can pilot themselves while debugging?
10:01 AM AchiestDragon: futher tec support and business advice avalable at £40 per hr subject to acceptance , this is a hobby chan not a buisness help line
10:03 AM AchiestDragon: maybe you could find a gui in mongoia to help you , you may get away with only paying him 50cents per hour for advice
10:08 AM lucas_ai: AchiestDragon: sounds good :)
10:26 AM AchiestDragon: https://www.youtube.com/watch?v=aTHp9shOzUI
10:27 AM AchiestDragon: food delivery drones of sorts
10:36 AM robotustra: Mongolia: advanced animal technologies
10:38 AM robotustra: AchiestDragon, do you know that mongolian does not have family names?
10:40 AM AchiestDragon: i know verry little about the place, other than they have keeped a traditional lifestyle and vaues going for much longer than most other parts of the world
10:48 AM AchiestDragon: i was beeing kind , should of told him to try North Sentinel Island india , they would be helpfull to him
10:50 AM AchiestDragon: thay would give him free advise though
10:54 AM AchiestDragon: https://en.wikipedia.org/wiki/North_Sentinel_Island
10:54 AM AchiestDragon: :D
02:09 PM Tom_L: yay, the parts i dropped off are ready
02:47 PM rue_mohr: oh! ohoh! ohohohohoh!
02:47 PM rue_mohr: WHAT IF I used a 50% duty cogbelt, on a drive that laid it back into the teeth of an anchored cogbelt! there would be no length to stretch!
02:48 PM rue_mohr: oh oh oh oh. what if you used the racks you HAVE.
02:48 PM rue_mohr: ... oh?
02:48 PM rue_mohr: yea, remember? you have a box of racks
02:48 PM rue_mohr: uh...
02:48 PM rue_mohr: yea
02:49 PM rue_mohr: I do...
02:49 PM rue_mohr: yea, AND remember we learned how to make drive wheels for threaded rod?
02:49 PM rue_mohr: oh, right
02:49 PM rue_mohr: yea
02:49 PM rue_mohr: my options are suddenly plentifull
02:49 PM rue_mohr: they always were
02:50 PM rue_mohr: what if we...
02:50 PM rue_mohr: go back to the polygons..
03:44 PM rue_mohr: ok, so I can tell if a triangle is clockwise or counterclockwise, ditto with a polygone ;)
03:45 PM rue_mohr: I swear it should be possible to optimize the poly are fn tho
03:46 PM rue_mohr: need to make a stupid-cheker tho that makes sure the polygon dosn't cross over itself
03:47 PM rue_mohr: anyhow, now the code for snapping ears off should be easy
03:48 PM rue_mohr: or not
03:48 PM rue_mohr: need to make sure the snap-lines dont cross anything
03:49 PM rue_mohr: need a faster line-segment-intersect tester
04:20 PM rue_mohr: I should be able to work out if there is an intersection with 4 crossproducts
05:25 PM Tom_L: ok rue_mohr, you brought it up so.........
05:25 PM Tom_L: http://bell-everman.com/products/linear-positioning/servobelt-linear-sbl
05:26 PM Tom_L: look at the " how it works " tab
05:26 PM Tom_L: and watch the video
05:28 PM Tom_L: good for things like plasma tables etc where there is little or no side load
05:35 PM robotustra: Tom_L, what's the progress on mill?
05:38 PM Tom_L: pics later if you're lucky
05:38 PM Tom_L: working on Y tonight
05:39 PM robotustra: ok
05:40 PM robotustra: I'm doing some drawings as well
05:41 PM Tom_L: 17°F might limit progress a bit
05:43 PM robotustra: hm, cold
05:43 PM robotustra: are you in the garage?
05:43 PM robotustra: no heating?
05:45 PM Tom_L: it's heated
05:46 PM Tom_L: part of it is
05:46 PM rue_shop3: oh someone already done it
05:47 PM Tom_L: yeah rue, you're late to the party
05:47 PM Tom_L: got parts back
05:47 PM rue_shop3: cool, someone already tested my idea then
05:47 PM rue_shop3: ah!
05:47 PM Tom_L: cut the linear rails just now
05:47 PM rue_shop3: are they right?
05:47 PM Tom_L: pretty close
05:47 PM rue_shop3: :)
05:48 PM Tom_L: i may not mill the steel, i'll see how well it looks after test assembly
05:48 PM Tom_L: may not get alot done tonight
05:49 PM rue_shop3: I'd tend to say that if you have a job that needs the extra precision, tear it all apart and reshape it up for the job
05:49 PM rue_shop3: so, hmm
05:49 PM rue_shop3: I really could ahve just used a dc motor for this solder feeder
08:18 PM rue_shop3: ok I'v done it
08:18 PM rue_shop3: it toook an hour and a half
08:26 PM rue_shop3: where can I post images that people can download them without signup and copyright crap?
08:30 PM Tom_shop: my server
08:30 PM rue_shop3: I was looking for a social media trap that can cause the image to spread like cancer
08:31 PM robotustra: imgur?
08:31 PM robotustra: make it public and you'll get cancer
08:31 PM rue_shop3: http://ruemohr.org/~ircjunk/art/A4988-5.png
08:32 PM robotustra: it's not clear from which side you are looking at driver
08:32 PM robotustra: there are pltnty images like this already
08:33 PM robotustra: plenty
08:33 PM robotustra: http://ruemohr.org/~ircjunk/art/A4988-5.png
08:33 PM robotustra: https://a.pololu-files.com/picture/0J1418.1200.jpg?ea6570418e038623602c5f221eb96f62
08:34 PM robotustra: sorry
08:34 PM rue_shop3: cant post to imugr, no account
08:34 PM robotustra: https://a.pololu-files.com/picture/0J1418.1200.jpg
08:34 PM robotustra: so, make it, it's for free
08:34 PM rue_shop3: no thats not a drawn pinout diagram
08:34 PM rue_shop3: that you can print on a nice white sheet of paper and put in a book
08:35 PM rue_shop3: the ONLY result close that google pulls up, its small, pixelated, and its drawn all over, oh yea, and its a 404
08:35 PM robotustra: as you wish
08:35 PM robotustra: if you are doing a mask, it's ok
08:35 PM robotustra: approve
08:36 PM rue_shop3: between cad/inkscape, and gimp, it took me like a freaking hour and a half to make that image
08:36 PM rue_shop3: post the damn things everywhere!
08:36 PM rue_shop3: it shouldn't be so hard to get that diagram
08:36 PM robotustra: ok, now I know what are you wasting your life for
08:36 PM rue_shop3: there are a LOT of photos of the back of theboard, but when you need clipart to make a diagram, your scrwed for clean linework
08:37 PM rue_shop3: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA should be easy!!!!!!!!!!!!!!!!!!!!! AAAAAAAAAAAARRRRRRRRRRRRGGGGGGGGGGGGG
08:37 PM rue_shop3: ok, anyhow, I printed a copy for myself, its in the book with the datasheet relivent stuff for it
08:37 PM robotustra: ok, I can put it to my account if you are not agains it
08:38 PM rue_shop3: BUT, my origional mission was to find the docs for which pins have pull up/downs
08:38 PM rue_shop3: yes, go for it
08:38 PM robotustra: I can help you to spread this cancer
08:38 PM rue_shop3: there are other sizes
08:38 PM robotustra: how to name it?
08:38 PM rue_shop3: http://ruemohr.org/%7Eircjunk/art/A4988-4.png
08:38 PM rue_shop3: A4988 pinout line diagram
08:38 PM rue_shop3: module?
08:39 PM rue_shop3: http://ruemohr.org/%7Eircjunk/art/A4988-2.png
08:39 PM robotustra: driver module
08:39 PM rue_shop3: yea
08:39 PM rue_shop3: its all just keywords, right?
08:39 PM robotustra: I hope yes
08:45 PM rue_shop3: I suppose I could make an instructables on it, and post it in there
08:45 PM rue_shop3: ok, what was I doing
08:45 PM rue_shop3: right, I have a driver, I need to modify it, put it on a board with a 555
09:01 PM rue_mohr: oh gee, 555 circuits are so
09:01 PM rue_mohr: so much overhead, I mean, I need a resistor, and a capacitor, and jumpers...
09:02 PM rue_mohr: tis circuit is so complex, I have to take all these driver pins and tie them high and low
09:02 PM rue_mohr: and I need a button in there
09:02 PM rue_mohr: arg
09:02 PM rue_mohr: maybe I can just avoid all this and make a nema17 dc motor
09:03 PM rue_mohr: that would be good, wouldn't it?
09:03 PM rue_mohr: yea, I can do a little gearbox in there
09:03 PM rue_mohr: 3d print a case
09:04 PM rue_mohr: or pull an anonnumberanon and chew 90% of the material out of a large expensive block
09:04 PM rue_mohr: yea, I could use a 3v hobby motor
09:04 PM rue_mohr: and gears, yes I ahve a lot of gears
09:04 PM rue_mohr: it would save me SO much trouble with the circuit I have to make for this stepper
09:05 PM rue_mohr: ugh, and I would need a 12V supply and a 5V supply
09:05 PM rue_mohr: regulators..
09:05 PM rue_mohr: so, if I just make a nema17 dc motor, all I need is a button to a power supply
09:06 PM rue_mohr: well, and a pwm circuit if I want to control the speeed, yea, thats easy
09:06 PM rue_mohr: and an H bridge if I want to reverse it
09:06 PM rue_mohr: yea
09:07 PM rue_mohr: and I could add a current motor with a jamb detector for automatic stopping
09:07 PM rue_mohr: and a run timer, for automatically dispensing a certian length of solder
09:07 PM rue_mohr: and I could make it wifi controlled
09:07 PM rue_mohr: and have a webserver to show its status
09:08 PM rue_mohr: there could be a sensor for how much solder is left on the roll
09:08 PM rue_mohr: it could play a warning over the shop jukebox
09:08 PM rue_mohr: if I add an AI to it, it could drive me to work!
09:09 PM rue_mohr: if I make a few, they could work out how to port my brain to a silicon platform
09:09 PM rue_mohr: ok wait, what was the goal again
09:09 PM rue_mohr: TAKE OVER THE WORLD
09:09 PM rue_mohr: no, no I think
09:09 PM rue_mohr: WHAT!?
09:09 PM rue_mohr: I think its to dispense solder
09:09 PM rue_mohr: :(
09:10 PM rue_mohr: yup
09:10 PM rue_mohr: I think we should keep with plan A and hook up the stepper motor
09:10 PM rue_mohr: with a tiny13 running an AI?
09:10 PM rue_mohr: no, with a 555
09:11 PM rue_mohr: but I can make 6 oscillators on a 74hc14
09:11 PM rue_mohr: how many do we need?
09:11 PM rue_mohr: ya yea ok
09:11 PM rue_mohr: we... we only need a 3 pin device tho
09:11 PM rue_mohr: gnd, 5V, and out
09:11 PM rue_mohr: hey, we could make an oscillator module
09:11 PM rue_mohr: and form factor it into a TO-92!
09:12 PM rue_mohr: it could have a pot for setting the rate!
09:12 PM rue_mohr: k I have an idea
09:12 PM rue_mohr: yea yea yea yea?
09:12 PM rue_mohr: you sit in the corner, and I'll finsih the project
09:13 PM rue_mohr: :(
09:13 PM rue_mohr: you can watch
09:13 PM rue_mohr: yes!
09:13 PM rue_mohr: in the mirror
09:13 PM rue_mohr: awe :(
09:16 PM Tom_shop: ok
09:16 PM Tom_shop: pics to come
09:16 PM rue_mohr: my feet are cold but I dont want to just put on socks ause I want to dash out to the shop, and I dont want to have to put on shoes too,
09:16 PM rue_mohr: so I need shoesocks
09:24 PM robotustra: rue_mohr, https://imgur.com/a/cLHu0
09:26 PM rue_mohr: cool
09:27 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Y_Axis_install.jpg
09:27 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Y_Axis_alignment1.jpg
09:27 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Y_Axis_Mockup.jpg
09:27 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/All_Axis_Mockup.jpg
09:29 PM rue_mohr: heh, I think you copped out ont ehat last one :)
09:29 PM Tom_L: hah
09:29 PM rue_mohr: rails are going upside down, right?
09:29 PM Tom_L: it's for effect
09:29 PM rue_mohr: for the ...x
09:29 PM Tom_L: on X yes
09:29 PM Tom_L: assembling that one will be a little tricky
09:29 PM rue_mohr: you lose like 4" on each end?
09:30 PM Tom_L: probably
09:30 PM rue_mohr: space of clamps
09:30 PM Tom_L: i extended the Y axis rails to maximize the travel
09:30 PM Tom_L: since i had extra
09:31 PM Tom_L: the mounting block goes clear up to the riser
09:31 PM rue_mohr: yup
09:31 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Y_Axis_alignment1.jpg
09:31 PM Tom_L: that's not quite all the way
09:31 PM rue_mohr: dont remember what the bit hangout is
09:32 PM rue_mohr: 7"?
09:32 PM Tom_L: i'm not sure either
09:32 PM Tom_L: the steel riser is 4"
09:32 PM Tom_L: i think i figured it to cover the whole table
09:32 PM rue_mohr: yup
09:33 PM Tom_L: i'm not gonna weld it solid until i see though
09:33 PM Tom_L: i've got extra 4" tube
09:34 PM rue_mohr: are you gonna do that thing wehre you paint it before the full assembly, or the thing where you look at it when its all finished wishing you had?
09:34 PM rue_mohr: I did latter on mine
09:34 PM Tom_L: it will get paint i'm sure
09:34 PM rue_mohr: tho, I have to move the uprights back 2"
09:34 PM Tom_L: the steel parts anyway
09:34 PM rue_mohr: which I'll do, someday, honestly...
09:35 PM Tom_L: powdercoat :D
09:35 PM rue_mohr: hah
09:35 PM rue_mohr: I need to make my powerdercoat sprayer
09:35 PM Tom_L: there's places closeby that to that
09:35 PM rue_mohr: all the parts are in a box
09:35 PM Tom_L: do*
09:35 PM rue_mohr: and test to see if toner ink will work
09:38 PM Tom_L: i need to make a spacer for the Y axis screw mount to the plate
09:39 PM Tom_L: that's in the cad drawing
09:39 PM Tom_L: and one for X eventually
09:39 PM rue_mohr: if it were warm and sunny out and I weren't at work, I'd so have a machine togethor
09:39 PM rue_mohr: oh yea, and space
09:39 PM rue_mohr: arg
09:40 PM rue_mohr: the back living room is going to love a tv and a matress 'soon'
09:40 PM rue_mohr: lose
09:40 PM rue_mohr: I wonder how many words my hands know
09:40 PM rue_mohr: must be a few more than I have indexes for
09:41 PM Tom_L: this isn't perfect but it's better
09:43 PM rue_mohr: there is no perfection
09:43 PM rue_mohr: its like infinity
09:44 PM rue_mohr: and I love watching people like anonnumberanon think its just around the corner
09:48 PM rue_mohr: ONE ANGSTROM OR ITS GARBAGE
09:48 PM rue_mohr: :) sigh
09:48 PM rue_mohr: .17mm works pretty dam good for me
09:49 PM rue_mohr: sounds huge
09:53 PM Tom_L: i mounted the Z column to align the Y axis to it
09:53 PM Tom_L: so it's square and plum
09:53 PM Tom_L: it's pretty close
09:54 PM Tom_L: once i'm all done, i'll pin the column
09:54 PM rue_mohr: any shims needed?
09:55 PM Tom_L: a little bit on Z
09:55 PM Tom_L: in the front
09:55 PM Tom_L: maybe .035"
09:55 PM Tom_L: i'm not quite done with that
09:55 PM Tom_L: i haven't gotten the dial indicator out yet
09:56 PM robotustra: after I clamped the scraped bars of steel to the t-slotted aluminum table - I got a flatness within 0.002" for the table 12x16"
09:56 PM rue_mohr: not much point till its togethor more
09:57 PM rue_mohr: robotustra, k
09:57 PM rue_mohr: those are gonna be your sliders?
09:57 PM robotustra: no
09:57 PM rue_mohr: or just tools for making the rest
09:57 PM robotustra: it will be kinda legs of the table
09:57 PM rue_mohr: so, your making plates within 2 thou to level the lathe stand?
09:58 PM robotustra: yeah, now I have to bolt them to the table and scrape together on the surface plate
09:58 PM rue_mohr: just use a block of wood...
09:58 PM robotustra: no, for cnc mill
09:58 PM rue_mohr: ok, I thought you were making a lathe?
09:58 PM robotustra: yes, but in parallel I'm fixing the table flatness of the cnc mill
09:59 PM rue_mohr: ah
09:59 PM robotustra: to mill some parts GOOD for lathe
09:59 PM rue_mohr: ok
09:59 PM robotustra: because I want to mill bearing housing and may be pulleys on cnc mill
09:59 PM rue_mohr: so couldn't you give the mill a grinder wheel and have it clean the table?
10:00 PM robotustra: no, it's impossible
10:00 PM rue_mohr: ok
10:00 PM robotustra: I do it slowly but surely
10:01 PM robotustra: 1) bolt bars to the table 2) make flat the bottom of bars
10:02 PM robotustra: 2) scrape spots on the mill to bolt bars
10:02 PM robotustra: 3*
10:02 PM robotustra: 4) profit
10:03 PM rue_mohr: hey, I'm just here to take over the world, dont ask me about step 3
10:05 PM Tom_L: once the mill is done, i'll make some of the parts on the mill to replace some of the not so good ones done on the sherline
10:05 PM rue_mohr: like?
10:05 PM Tom_L: the shims probably
10:06 PM Tom_L: they might turn out ok.. we'll see
10:06 PM Tom_L: i don't want any binding on the screw though
10:07 PM robotustra: did I show it today? https://imgur.com/9o1FHsR
10:07 PM Tom_L: if you did i missed it
10:08 PM robotustra: draw housing for bearings
10:09 PM rue_mohr: its interesting, every lathe I have seen keeps the apron sliders under the job so they are directly under the load of the bit
10:10 PM rue_mohr: thats an interesting cantalevered design
10:10 PM rue_mohr: hows the tailstock gonna go on that?
10:10 PM robotustra: I'll put it on a magnet chuck
10:11 PM rue_mohr: ah, so you can set whatever taper you want
10:11 PM robotustra: yes
10:12 PM robotustra: this rectangular bar between rail - is a magnet chuck
10:12 PM robotustra: I'm thinking to use this lathe as a grinder too
10:12 PM robotustra: if to put a second spindle on the tool plate
10:13 PM robotustra: this one https://imgur.com/n8PSAkQ
10:15 PM robotustra: one of the reason why I'm building but not buying the lathe is that there is no lathe of this size with 40 mm through hole on the chuck
10:16 PM rue_mohr: http://www.americanmachinetools.com/how_to_use_a_lathe_files/Fig7-46.gif
10:16 PM rue_mohr: you know what I mean about being cantalevered, right?
10:16 PM rue_mohr: k
10:17 PM robotustra: you mean the force push the bit down?
10:17 PM rue_mohr: yea, it does
10:17 PM rue_mohr: straight down
10:17 PM robotustra: for cnc it's not so relevant
10:17 PM rue_mohr: right
10:18 PM robotustra: and I can turn spindle any direction actually
10:18 PM robotustra: I'll select which is the best
10:19 PM robotustra: if the tool changer will be heavy enough - it micht happen that cuttung forrce is less then the weight
10:19 PM robotustra: in this case I unload rails
10:19 PM robotustra: do not stress them
10:20 PM robotustra: but it can cause extra vibrations
10:22 PM robotustra: look at this https://www.youtube.com/watch?v=eipyve8xv24
10:22 PM robotustra: it rotates clock wise
10:23 PM rue_mohr: yup
10:23 PM rue_mohr: me and chatter have a long history
10:24 PM Tom_L: chatter breaks bits
10:24 PM robotustra: and this guy's lathe work normal CCW https://www.youtube.com/watch?v=2jmOk86-jgM
10:24 PM rue_mohr: :) I just stick the hss
10:25 PM rue_mohr: stick to
10:25 PM rue_mohr: I shattered 3 of my carbide bits going overcenter and decided that I sucked
10:25 PM rue_mohr: ANd carbide cant makea as nice a cut due to that whole sheering rather than cutting thing
10:26 PM rue_mohr: cant take off 1 thou, bit just rolls along on the material
10:26 PM rue_mohr: give me a nice sharp hss bit any day
10:27 PM rue_mohr: (ok, maybe not days i'm in a hurry on hard materials)
10:27 PM robotustra: rue_mohr, read machinist books, you can't use carbide inserts where ever you want, there are some regimes of cutting whre they are the best
10:28 PM robotustra: but I'm nit sure you can reach them on a small lathe
10:28 PM robotustra: the speed of cutting should be pretty high to use them
10:29 PM robotustra: and no vibrations
10:29 PM robotustra: there is a very good tutorial on youtube but it's in russian
10:29 PM rue_mohr: yea, if I'm trying to use carbide on hard material, the motor is usually at the limit of what it can do
10:32 PM robotustra: I'm not sure that this videos will be useful, but you can get good pictures: https://www.youtube.com/watch?v=c6pGuFBsGT8
10:33 PM robotustra: this video is about carbide inserts and other cutters https://www.youtube.com/watch?v=qQtDwS-t5Y0
10:34 PM robotustra: ah, there is some translation in the video about materials
10:35 PM robotustra: it's explained what material cutter is the best for which material
10:36 PM robotustra: rue_mohr, what is the power of your lathe?
10:36 PM rue_mohr: 3/4 I think
10:36 PM rue_mohr: not much
10:37 PM rue_mohr: when you get chatter you have to dig deeper, sometimes that sweetspot just isn't there
10:37 PM anonnumberanon: sup
10:38 PM robotustra: I have to rewatch this video and make some notes about it
10:38 PM rue_mohr: noting
10:38 PM anonnumberanon: rue_mohr, you been playing with your ultra-precise cnc lately?
10:38 PM anonnumberanon: or should I say..
10:38 PM anonnumberanon: wiggling parts around with it?
10:38 PM rue_mohr: I'm getting tired, this is a gyp, I slept till like 10:30 today
10:38 PM rue_mohr: no, silence is golden
10:39 PM rue_mohr: EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
10:39 PM anonnumberanon: can it cut butter? i have a valentine's day gift idea
10:39 PM anonnumberanon: maybe you could get it to cut butter by February 14th
10:40 PM rue_mohr: hmm, a paste printer would be nice
10:40 PM * anonnumberanon stares in the distance, admiring the state of the world
10:40 PM rue_mohr: would I print cookies? hmmmm
10:42 PM * anonnumberanon found today his lost solar panel
10:42 PM rue_mohr: neighbours roof?
10:42 PM rue_mohr: :) my line intersection tester works
10:43 PM rue_mohr: all I had to do was google my idea, find code from someone who'd implemented it, and fix it
10:43 PM robotustra: rue_mohr, what is the max speed of currint you can get on your lathe?
10:44 PM rue_mohr: rpm?
10:44 PM robotustra: no, linear speed
10:45 PM robotustra: pi * D * rpm
10:46 PM rue_mohr: heh, ...
10:46 PM robotustra: for carbide inserts you should have > 600 m/s
10:46 PM rue_mohr: the problem is depth of cut tho
10:46 PM robotustra: if less - use HSS
10:46 PM rue_mohr: you have to take like 5 thou min
10:46 PM robotustra: this is also, sure
10:47 PM rue_mohr: and that motor cant take 5 thou thru hard material at almost any dia
10:47 PM robotustra: ok
10:47 PM robotustra: put more powerful motor
10:47 PM rue_mohr: r = 5", not sure how you fit that in there, but its rated for 5"
10:48 PM rue_mohr: zippo:/files/programming/c/libdev/polylib# units 5inch m
10:48 PM rue_mohr: * 0.127
10:48 PM rue_mohr: zippo:/files/programming/c/libdev/polylib# circle -r 0.127
10:48 PM rue_mohr: Radius is : 0.127000
10:48 PM rue_mohr: Diameter is: 0.254000
10:48 PM rue_mohr: Circumfrence is : 0.797965
10:49 PM robotustra: don't know what is this
10:49 PM anonnumberanon: robotustra, he knows he needs a Makita router already
10:49 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/lathe/
10:49 PM rue_mohr: trying to find the rpm chart...
10:49 PM anonnumberanon: but he decided to buy 10 million LEDs and resistors on Aliexpress with his $100 instead
10:50 PM anonnumberanon: that same router that speeds up with an integrated PID when it senses resistance in the material
10:50 PM anonnumberanon: that same router that can cut aluminum well
10:51 PM robotustra: cheap chinisium lathe
10:51 PM anonnumberanon: brb shower
10:51 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/lathe/p1050935.jpg
10:51 PM rue_mohr: that was a neat trick...
10:52 PM rue_mohr: ugh, I suppose I wanted to go out to the shop again anyhow
10:52 PM robotustra: milling operation on a lathe
10:52 PM Tom_L: wtf
10:53 PM robotustra: rue_mohr, is this a 6" chuck?
10:53 PM rue_shop3: 2400 rpm
10:53 PM rue_shop3: 1912.8 m/min
10:54 PM rue_shop3: no
10:54 PM rue_shop3: yea
10:54 PM Tom_L: which?
10:54 PM rue_shop3: root@blackie2:/files/temp/A4988# units 1912m/min m/sec
10:54 PM rue_shop3: * 31.866667
10:54 PM robotustra: peu
10:54 PM rue_shop3: so my lathe peaks out at 32m/sec
10:55 PM Tom_L: it's gonna get cold tonight
10:55 PM robotustra: it means - no carbide inserts
10:55 PM Tom_L: 14°F currently
10:55 PM rue_shop3: I put a heater in the shop, I'm still dialing up the thermostat
10:56 PM Tom_L: i turned mine on a bit then shut it off
10:56 PM Tom_L: i was comfortable all night out there
10:56 PM robotustra: appartment is good, 20C in appartment all night
10:56 PM robotustra: 19-20
10:56 PM rue_shop3: hmm 10 stepper motor drivers
10:58 PM Tom_L: ok, enough for one day.
11:01 PM rue_shop3: wtf, I lost a whole box of parts for a 3d printer
11:01 PM rue_shop3: this is bad, it only needed assembly
11:02 PM rue_shop3: aha!
11:12 PM rue_shop3: anonnumberanon, there is a new design on the internet for cnc macines
11:12 PM rue_shop3: http://planpdffree.de.vu/diywoodplans/wp-content/upload/2014/03/woodwork/diy-cnc.jpg
11:12 PM rue_shop3: just another one thats better than mine eh?
11:13 PM rue_shop3: wtf, why is my runtime less than 12 hours?
11:13 PM rue_shop3: I need a new battery or soemthing?
11:14 PM rue_shop3: Tom_L, hmm I need a radial friction clutch...
11:43 PM anonnumberanon: rue_shop3, well yours is better than many, and especially better than the ones that were never built!
11:44 PM anonnumberanon: ok let's see Tom_L 's new pictures, then that link you freshly posted on that socalled new design
11:48 PM anonnumberanon: Tom_L, nice pics
11:48 PM anonnumberanon: looks your alignment challenges are starting or about to
11:49 PM rue_shop3: I have to say tho, 3d printers are the ultimate in 'I got away with it, it works' almost more so than any of the arduino code libraries
11:50 PM SpeedEvil: mostly
11:50 PM SpeedEvil: there are so many variables that a dodgy print can be given eleven billion other explanations
11:51 PM rue_shop3: I think there is a dent in my shop desk *just* from all the head banging I did regarding how a diy 3d printer goes togethor
11:51 PM mrdata: evil spirits
11:52 PM anonnumberanon: actually it would not need rigidity, just lightness of the components to gain more speed
11:53 PM * anonnumberanon doesn't know what he speaks of though
11:53 PM anonnumberanon: my buddy has a 3D printer, don't know if he got bored of it or if something on it broke
11:53 PM rue_shop3: I think its funny how people want 3d printers to print faster than a) the plastic can melt b) the plastic can bond c) the plastic can cool
11:54 PM anonnumberanon: yiu live in the past
11:54 PM rue_shop3: anonnumberanon, he would be part of the group that got one to be cool, and then didn't know what to do with it
11:54 PM anonnumberanon: better have it melt faster than fast if you're gonna 3d print on the moon mang
11:54 PM anonnumberanon: rue_shop3, i love these people
11:54 PM LuminaxWk: how faster than fast do you need to be fast enough to be faster than fast ?
11:55 PM anonnumberanon: they throw money into stem so I can have a good job and future in something i like
11:55 PM anonnumberanon: it all makes steppers cheaper too
11:55 PM rue_shop3: yea, at $20/stepper I ahve about a million dollars worth here
11:55 PM anonnumberanon: granted, that's a tiny part of a machine build
11:56 PM rue_shop3: I once bought a stepper motor
11:56 PM anonnumberanon: you should sell them
11:56 PM rue_shop3: cause it was a dc servo motor with encoder and I knew it
11:56 PM rue_shop3: but the guy selling it didn't
11:56 PM anonnumberanon: what are those?
11:57 PM LuminaxWk: closed loop feedback servo ?
11:59 PM anonnumberanon: aren't all servos closed loop feedback tho?