#linuxcnc | Logs for 2015-01-23

[00:00:03] <zeeshan> since its open loop :/
[00:00:14] <pcw_home> unlike a mechanical brake, the eddy current brake should be very predictable but this is not just normal dynamic braking this means the drive must apply DC current
[00:00:24] <PetefromTn_> says the delay is from .1-.5seconds
[00:00:37] <zeeshan> 5
[00:00:50] <PetefromTn_> yeah
[00:01:06] <zeeshan> pcw_home: please clarify this: you watch encoder count
[00:01:18] <zeeshan> while spinning spindle at 30 rpm for example
[00:01:26] <zeeshan> you figure out which count you need to enable the brake @
[00:01:33] <pcw_home> yep
[00:01:39] <zeeshan> so the signal goes through 7i77 output
[00:01:41] <zeeshan> to a relay
[00:01:51] <zeeshan> which injects dc
[00:02:08] <pcw_home> No relay
[00:02:30] <zeeshan> okay goes directly to vfd
[00:02:37] <pcw_home> all done with the drives 3 phase bridge
[00:02:51] <zeeshan> this is pretty cool
[00:02:56] <zeeshan> once it brakes
[00:02:59] <zeeshan> will it stay in position?
[00:03:10] <zeeshan> or are you relying on the friction of the spindle
[00:03:15] <zeeshan> to keep it in place
[00:03:18] <pcw_home> it has 0 torque at 0 speed
[00:03:30] <zeeshan> so how do you ensure it doesnt move
[00:03:35] <pcw_home> but very high viscous damping
[00:03:59] <pcw_home> what torque is available to make it move?
[00:06:08] <pcw_home> If the analog input responds quickly, that and a PID loop may be better, but that needs to be checked
[00:06:14] <PetefromTn_> what I don't get is how the machine did this before...the machine did not have any sort of mechanical orientation and was able to run for almost 20 years that way
[00:06:32] <zeeshan> PetefromTn_: see if you can find a manual
[00:06:42] <pcw_home> probably the drive was "special"
[00:07:12] <pcw_home> many spindle drives have an "orient" pin
[00:07:49] <zeeshan> is it a 15hp spindle ?
[00:07:53] <zeeshan> time to buy a 15 hp servo!
[00:07:55] <PetefromTn_> yeah but what is the difference it is still the same motor?
[00:08:02] <pcw_home> VFDs are not generally made to do servo duty
[00:09:39] <pcw_home> so if you have a DC brake option and its fast thats a possibility
[00:09:41] <pcw_home> if not then the analog input is probably the next choice
[00:09:58] <PetefromTn_> whats funny is it seems very strong even at 50 RPM
[00:10:20] <PetefromTn_> I rigid tapped all those holes at 200RPM
[00:10:54] <pcw_home> strong is nice but for PID control you need reasonable response time to commands
[00:11:19] <zeeshan> pcw_home: i still dont understand how dc braking
[00:11:26] <zeeshan> after the spindle stops, how does it stay there
[00:11:30] <zeeshan> if you have no control loop
[00:11:33] <PetefromTn_> so you are saying it is possible even the analog input might not be fast enough
[00:11:50] <zeeshan> analog inptu has to be fast enough !
[00:11:53] <pcw_home> Dont know, does the manual have any specs?
[00:12:09] <zeeshan> pcw_home: is it cause its like a eddy current brake ?
[00:12:12] <zeeshan> electromagnetic brake
[00:12:20] <zeeshan> kinda like my Z servo motor
[00:12:21] <zeeshan> when you energize it
[00:12:25] <pcw_home> Yes its an eddy current brake
[00:12:29] <zeeshan> it creates a mag field in a way
[00:12:33] <zeeshan> that stops the motor from spinning
[00:12:47] <zeeshan> even when its at rest
[00:12:51] <zeeshan> and you try move the motor shaft
[00:12:56] <zeeshan> you wont be able to move it
[00:13:17] <zeeshan> i read pete's manual briefly
[00:13:25] <zeeshan> it said something about analog inputs being used to control water flow
[00:13:26] <pcw_home> yes (its not a true brake in that its just viscous damping but it can be pretty darned viscous)
[00:13:30] <zeeshan> and other critical processes
[00:13:40] <zeeshan> okay i gotcha.
[00:13:51] <zeeshan> i need to experiment with it
[00:13:54] <zeeshan> it sounds very interesting
[00:14:11] <pcw_home> Yeah a battery and a small induction motor
[00:14:18] <zeeshan> how much DC voltage do you typically need?
[00:14:35] <zeeshan> as high as the drive can take?
[00:14:35] <pcw_home> (dont get bit by the inductive kickback)
[00:14:56] <pcw_home> not much because the motor resistance is pretty low
[00:15:04] <zeeshan> okay to get a feel for the resistance
[00:15:09] <zeeshan> 12v on a 3 phase motor
[00:15:23] <zeeshan> theres 3 poles though :P
[00:15:30] <pcw_home> sure (but watch out for the kickback)
[00:15:36] <zeeshan> yes
[00:15:41] <pcw_home> between any 2 will do
[00:16:17] <zeeshan> by inductive kickback
[00:16:21] <zeeshan> youre saying watch out for a spark?
[00:16:28] <zeeshan> upon disconnection of battery?
[00:16:43] <zeeshan> cause mag field will try to collapse under a short amount of time
[00:17:12] <pcw_home> or finding yourself on the floor trying to figure out what happened
[00:17:21] <zeeshan> haha
[00:17:26] <zeeshan> i'll hook it up to a switch
[00:17:38] <PetefromTn_> well this sure is turning out to be a challenging dilemma
[00:17:39] <zeeshan> hopefully the switch doesnt explode
[00:17:40] <zeeshan> hahahaha
[00:17:42] <pcw_home> V= Ldi/dt
[00:17:46] <zeeshan> yea!
[00:17:48] <zeeshan> dt approaching zero
[00:17:52] <zeeshan> huge voltage spike!
[00:18:24] <zeeshan> PetefromTn_: i really really think you should see how the manual did it
[00:19:16] <PetefromTn_> well the fact of the matter is that the original spindle drive is no longer here and it was so damn expensive to replace I am kinda glad it is gone.
[00:19:43] <zeeshan> PetefromTn_: yes but you can see how they did it
[00:19:43] <zeeshan> with it
[00:19:45] <pcw_home> Joules=1/2 LI^2 (this can be considerable in a decent size motor)
[00:19:47] <zeeshan> and try to replicate with it
[00:20:01] <PetefromTn_> so it was able to do it somehow but I am not sure even the manual will describe that process.
[00:20:20] <zeeshan> it should
[00:20:27] <zeeshan> if you see wiring connections to the braking pins
[00:20:29] <PetefromTn_> the other problem is that the only manuals I have are more schematic and parts related
[00:20:31] <zeeshan> you know it was using a brake
[00:20:35] <pcw_home> probably only the spindle drive technical manual
[00:20:52] <PetefromTn_> it was an emerson Control techniques spindaxx
[00:21:50] <zeeshan> http://www.stoeber.de/TDE/ARCHIV/SDC_en.pdf
[00:21:51] <zeeshan> that one ?
[00:23:35] <zeeshan> looks like it used feedback loops
[00:23:51] <zeeshan> if you follow the response times
[00:23:57] <zeeshan> it says 512 us for speed loop
[00:24:09] <zeeshan> and 512 us sampling time of analog inputs
[00:24:18] <zeeshan> if t hey can do pid using those specs
[00:24:20] <zeeshan> and orient
[00:24:24] <pcw_home> does the manual of your VFD mention a DC brake option (DC injection)?
[00:24:26] <PetefromTn_> http://www.ecrater.co.uk/p/20775659/cincinnati-milacron-arrow-control-techniques it looked like this one
[00:24:33] <zeeshan> pcw_home: yes it has it
[00:24:56] <zeeshan> http://www.clrwtr.com/PDF/Hitachi/Hitachi-WJ200-User-Manual.pdf page 4-20
[00:25:10] <zeeshan> PetefromTn_: that is huge dude
[00:25:11] <zeeshan> lol
[00:25:13] <bobo_> PCW might mention heating of motor coil . ie don't leave DC on and go for a Hot lunch
[00:25:39] <zeeshan> bobo_: i know :P
[00:25:45] <zeeshan> last time i tried to measure coil resistance
[00:25:48] <zeeshan> i got like 1 ohm
[00:25:53] <zeeshan> i think it might even need a resistor in series.
[00:25:57] <zeeshan> so i dont blow up the battery
[00:26:24] <zeeshan> bobo_: where in uk are you
[00:26:41] <PetefromTn_> what do you mean huge?
[00:26:49] <zeeshan> physically big
[00:27:12] <PetefromTn_> well actually it is smaller than the hitachi or at least thinner...
[00:27:22] <zeeshan> what hp
[00:27:24] <PetefromTn_> essentially physically about the same size
[00:27:38] <bobo_> uk will not let me in . Cols,Oh
[00:27:39] <PetefromTn_> I dunno the machine has a 10hp spindle
[00:29:02] <zeeshan> ah bobo_
[00:29:15] <PetefromTn_> http://www.ebay.ca/itm/Warranty-Control-Techniques-SA750-SA-750-SpindAx-Spindle-Servo-Drive-Keypad-/201259640267?pt=LH_DefaultDomain_0&hash=item2edc0265cb
[00:29:26] <zeeshan> 3610
[00:29:32] <zeeshan> let me give you that in cash sir.
[00:30:21] <PetefromTn_> that is actually a cheap price LOL
[00:30:38] <PetefromTn_> when I was first looking at this machine I saw some even higher priced than that
[00:30:41] <pcw_home> might try the brake input, it may be fast enough
[00:31:02] <PetefromTn_> this is why I chose to gut the entire machine ALL of the parts are stupid expensive
[00:31:21] <zeeshan> it makes sense for a production facility to just replace part
[00:31:31] <zeeshan> so these prices might not be too ridiculus
[00:31:49] <pcw_home> bbl
[00:32:02] <PetefromTn_> well
[00:32:25] <PetefromTn_> I guess I need to man up and try to get the analog input hooked up again
[00:32:42] <zeeshan> i would listen to pcw's suggestion
[00:32:44] <zeeshan> about the dC braking
[00:32:48] <PetefromTn_> even if we can get the braking to work it still needs to get there first
[00:32:52] <zeeshan> but that might be moire involved
[00:33:40] <PetefromTn_> I remember talking to lee in UK about his machine
[00:33:56] <PetefromTn_> he did not try to get the orient to work
[00:34:27] <PetefromTn_> and he built some kind of pneumatic solenoid driven orient mechanism that put the spindle into position
[00:34:52] <pcw_home> actually the orient component assumes PID control so that might be easier because it involves less wheel re-invention
[00:35:31] <PetefromTn_> https://www.youtube.com/watch?v=bSXR3FsN0EE
[00:35:54] <pcw_home> but it does seem that PID control via modbus is out
[00:36:04] <pcw_home> really bbl
[00:36:11] <PetefromTn_> OK thank you PCW
[00:36:37] <zeeshan> PetefromTn_: did you disconnect your analog wires when you went over to modbus? :P
[00:36:46] <PetefromTn_> yes
[00:36:49] <zeeshan> damn
[00:36:53] <zeeshan> was it 2 wires going from 7i77
[00:36:57] <zeeshan> to the drive?
[00:37:06] <PetefromTn_> it was like three or four
[00:37:26] <PetefromTn_> it had spindle analog speed control and FWD/REV and gnd.
[00:37:26] <zeeshan> hm
[00:37:31] <zeeshan> ah
[00:38:00] <zeeshan> hey at least you know where the wires will go :P
[00:38:13] <PetefromTn_> well actually earlier I was unsure
[00:38:21] <zeeshan> and i've learned modbus is nfg for spindle control :(
[00:38:24] <PetefromTn_> it has been awhile since I had it hooked up that way
[00:38:37] <PetefromTn_> why?
[00:38:43] <zeeshan> too slow
[00:38:48] <zeeshan> at least using linuxcnc
[00:38:48] <PetefromTn_> if you don't need orient it works great
[00:38:54] <zeeshan> yes
[00:38:59] <zeeshan> but id like orient on the lathe
[00:39:01] <zeeshan> that would be really cool
[00:39:38] <PetefromTn_> yeah on a turning center it would be nice but I am not sure it is necessary on a machine like ours..
[00:40:14] <PetefromTn_> I showed you that funky hardinge turning center video right>
[00:40:33] <zeeshan> no
[00:40:47] <bobo_> I think you really want more than just lathe spindle orent
[00:40:55] <zeeshan> orient
[00:41:06] <zeeshan> im gonna keep looking for a dual spindle lathe
[00:41:08] <bobo_> that too
[00:41:10] <zeeshan> i highly doubt ill ever find one
[00:41:16] <zeeshan> for under 4-5k
[00:41:29] <PetefromTn_> https://www.youtube.com/watch?v=qIpByxym7Co
[00:42:19] <zeeshan> hgahaha
[00:42:24] <zeeshan> the whole stepper drrops down
[00:42:28] <zeeshan> or servo
[00:42:29] <zeeshan> that is COOL
[00:42:43] <zeeshan> that is very frigging awesome
[00:43:05] <PetefromTn_> it really is awesome
[00:43:22] <PetefromTn_> I would be damn happy just to have the simple lathe with the toolchanger on it heh
[00:45:38] * zeeshan needs to stop thinking about more projects
[00:45:43] * zeeshan should make use of the tools he has now
[00:46:41] <PetefromTn_> https://www.youtube.com/watch?v=nH_Klp0IyeY same guy
[00:47:29] <zeeshan> i think atc isnice to have
[00:47:33] <zeeshan> but for me its not necessary
[00:47:42] <zeeshan> i try to minimize tool changes
[00:48:27] <bobo_> zeeshan needs to move the garage wall ioto the living room
[00:49:07] <zeeshan> ill be honest
[00:49:12] <zeeshan> im just not happy with the fact its steppers
[00:49:17] <zeeshan> i want a m achine with glass scales
[00:49:20] <zeeshan> and servos
[00:50:53] <PetefromTn_> well if it works good and makes an accurate part what difference does it make..
[00:51:16] <zeeshan> possibly the fact that it might make good parts one day
[00:51:21] <zeeshan> and not another :(
[00:51:31] <PetefromTn_> really that kinda sucks.
[00:51:40] <PetefromTn_> what is causing it?
[00:51:45] <zeeshan> no it hasnt happened to me
[00:51:50] <zeeshan> but it might in the future
[00:51:54] <zeeshan> and i wont even know it till i go to measure part
[00:52:12] <bobo_> PCW was saying steppers having encoders almost = servos
[00:52:12] <zeeshan> you know what
[00:52:14] <zeeshan> youre right
[00:52:19] <zeeshan> i just need to focus on what i have
[00:52:22] <zeeshan> and make use of it.
[00:52:33] <zeeshan> if it is not in spec, f it, chuck the part
[00:52:35] <zeeshan> and start over.
[00:52:42] <PetefromTn_> I don't think you are going to be moving it fast enough to really have missed steps etc..
[00:52:52] <PetefromTn_> and you put some large motors on it
[00:53:01] <PetefromTn_> so they are not going to be struggling to make the cuts
[00:53:07] <PetefromTn_> you have already proven that much
[00:53:13] <zeeshan> it just doesnt feel like its a real lathe though
[00:53:16] <zeeshan> if you know what i mean?
[00:53:25] <PetefromTn_> so I would imagine if you have good home switches it should make a good accurate part
[00:54:06] <zeeshan> i think i might be happier if i got rid of the cross slide crap
[00:54:12] <zeeshan> made a solid tool post
[00:54:24] <zeeshan> and got a wedge style tool holdewr
[00:54:34] <PetefromTn_> well I understand that after seeing and running MUCH larger and heavier equipment at the shops the 12x36 feels tiny and weak.
[00:54:37] <zeeshan> so the repeatability is much less than tenths
[00:54:43] <PetefromTn_> but it is still a decent lathe
[00:54:58] <PetefromTn_> its funny you say that
[00:55:09] <PetefromTn_> my lathe does not have a compound on it
[00:55:13] <zeeshan> lol
[00:55:17] <PetefromTn_> it has a bigass block of steel
[00:55:18] <zeeshan> hey at least you got a working vmc!
[00:55:24] <zeeshan> oh
[00:55:25] <zeeshan> i read that wrong
[00:55:42] <PetefromTn_> that has a big bolt to accept the toolpost they sold
[00:56:06] <zeeshan> haha
[00:56:20] <PetefromTn_> the compound is a weak point in the rigidity line to the carriage really
[00:56:26] <zeeshan> i totally agree
[00:56:35] <PetefromTn_> not really necessary on a CNC lathe
[00:56:36] <zeeshan> i have the gibs tightened down to all the way
[00:56:39] <zeeshan> and it still moves.
[00:56:40] <zeeshan> pos
[00:56:53] <roycroft> weld it in place
[00:56:57] <zeeshan> haha
[00:57:04] <zeeshan> it'd prolly crack
[00:57:06] <zeeshan> chinese casting!
[00:57:09] <zeeshan> high carbon
[00:57:11] <roycroft> solder it then
[00:57:19] <zeeshan> im gonna make a new cross slide
[00:57:21] <zeeshan> i need to
[00:57:26] <zeeshan> so i can properly mount the X ball screw
[00:57:31] <zeeshan> theres no room for the ball nut to be in there
[00:57:31] <PetefromTn_> you could get a nice big chunk of cast iron and machine it and bolt it down like crazy to the cross slide
[00:57:54] <zeeshan> i want to kill 2 birds with 1 stone
[00:58:03] <zeeshan> need mill running!
[00:58:07] <roycroft> do you think at 12x36 can do good quality work, petefromtn_?
[00:58:10] <roycroft> i haven't ever used one
[00:58:16] <roycroft> i've used much larger and much smaller lathes
[00:58:18] <zeeshan> roycroft: did you not see my video !
[00:58:24] <roycroft> no, i didn't
[00:58:31] <PetefromTn_> well all I know is I made TONS of stuff with that lathe...
[00:58:45] <roycroft> a 12x36 is both in my financial budget and my floor real estate budget
[00:58:54] <PetefromTn_> I kinda wish I had not had to sell it to afford the CNC lathe
[00:59:14] <roycroft> plus it's something i can move without too much trouble
[00:59:16] <zeeshan> https://www.youtube.com/watch?v=KpVB0ouezb0
[00:59:17] <zeeshan> stainless
[00:59:17] <PetefromTn_> my new lathe is kinda like an overgrown 12x36 hehe
[00:59:22] <roycroft> i'd have a hard time installing a 3 ton lathe
[00:59:24] <zeeshan> https://www.youtube.com/watch?v=vxb7T_qQ9B4
[00:59:26] <zeeshan> it started like that
[00:59:28] <zeeshan> huge interrupted cut
[01:00:21] <zeeshan> https://www.youtube.com/watch?v=MwUubp23p9o
[01:00:25] <zeeshan> regular aluminum tuirning
[01:00:26] <PetefromTn_> that looks like a pretty damn nice finish on stainless
[01:00:36] <zeeshan> https://www.youtube.com/watch?v=PtuQcJ4prHE
[01:00:39] <roycroft> yes, that's pretty decent
[01:00:44] <roycroft> i could live with it :)
[01:00:45] <zeeshan> last video is abuse of lathe
[01:01:34] <zeeshan> i learnde something interesting the other day in my class
[01:01:43] <PetefromTn_> honestly if that were my machine I would just make a nice sheetmetal cover for the X screw and make some bolt down attachments for the toolpost and add a parting off tool tower in back
[01:01:50] <zeeshan> PetefromTn_:
[01:01:54] <zeeshan> i agree
[01:01:58] <zeeshan> but the thing is it takes more shop space
[01:02:07] <PetefromTn_> what does
[01:02:12] <zeeshan> the fact x sticks out that much
[01:02:16] <zeeshan> in the back
[01:02:26] <zeeshan> its almost 12"
[01:02:34] <zeeshan> might not like a lot
[01:02:35] <roycroft> that lathe abuse video looks painful
[01:02:40] <bobo_> move garage wall
[01:02:44] <zeeshan> L:OL bobo
[01:02:54] <PetefromTn_> did it not come with a backsplash?
[01:02:58] <zeeshan> nope
[01:03:02] <zeeshan> no backsplash
[01:03:02] <PetefromTn_> huh
[01:03:04] <zeeshan> no chip pan
[01:03:05] <PetefromTn_> mine did
[01:03:11] <PetefromTn_> had both
[01:03:20] <roycroft> what lathe is that, zeeshan?
[01:03:24] <zeeshan> 12x36!
[01:03:30] <roycroft> yes, but which one?
[01:03:30] <PetefromTn_> you should make one and make it clear that X screw
[01:03:41] <roycroft> they're all similar, but they're not all the same
[01:03:52] <zeeshan> this one is made in taiwan
[01:03:57] <zeeshan> http://www.busybeetools.com/products/lathe-12in-x-36in-2hp-gear-head.html
[01:05:08] <roycroft> oh, the gear head one
[01:05:23] <zeeshan> yes loud as hell
[01:05:43] <roycroft> i'm looking at the grizzly not gearhead one
[01:06:19] <roycroft> the gearhead one has a narrower range of feeds/thread pitches
[01:07:03] <roycroft> i doubt i'd ever use the extra thread pitch options of the not gearhead one, but it can feed more slowly, and i thought that might be advantageous when doing finish passes
[01:07:26] <zeeshan> all depends on your tooling
[01:07:31] <zeeshan> i just learned this in class
[01:07:47] <zeeshan> prof asked us, why is it that you can't get good surface finish with turning?
[01:07:55] <roycroft> when i took machining classes i was able to get better finishes than most of my classmates
[01:07:55] <zeeshan> im like rigidity
[01:08:03] <zeeshan> hes like, okay, but lets say i give you the most rigid machine in the world
[01:08:13] <zeeshan> you still can't get as good of a surface finish with turning
[01:08:14] <zeeshan> vs grinding
[01:08:15] <zeeshan> why
[01:08:17] <roycroft> i took the time to grind my tooling carefully
[01:08:21] <roycroft> and i kept a diamond hone in my pocket
[01:08:23] <PetefromTn_> http://i.imgur.com/A9uK8Xw.jpg http://i.imgur.com/Dd6amO6.jpg http://i.imgur.com/nOZzBLP.jpg
[01:08:29] <roycroft> i'd touch up the tool often
[01:08:31] <PetefromTn_> that is my old 12x36
[01:08:35] <zeeshan> PetefromTn_:
[01:08:38] <zeeshan> thats a beauty!
[01:08:46] <PetefromTn_> yeah it was nice
[01:08:48] <zeeshan> NOW i know what those to threaded HOLE locations are
[01:08:49] <PetefromTn_> I miss it
[01:08:49] <zeeshan> ROFL
[01:08:53] <zeeshan> at the head stock
[01:08:54] <zeeshan> hahahaha
[01:09:08] <zeeshan> fuck i really should order a cover
[01:09:12] <zeeshan> back cover
[01:09:33] <PetefromTn_> yeah it must make an awful mess without them
[01:09:39] <zeeshan> yes it does
[01:09:45] <zeeshan> my drywall has oil spatter on it
[01:09:46] <zeeshan> :-)
[01:09:54] <PetefromTn_> I'm sure
[01:09:57] <zeeshan> i like the totes
[01:09:59] <zeeshan> under the lathe
[01:10:09] <PetefromTn_> that is my small scrab bins
[01:10:14] <PetefromTn_> one is steel one is ally
[01:10:16] <roycroft> that looks like the non gearhead lathe, petefromtn_, correct?
[01:10:17] <zeeshan> thats a huge chnk of aluminum.
[01:10:18] <zeeshan> lol
[01:10:27] <PetefromTn_> no its the gear head
[01:10:30] <PetefromTn_> gap bed
[01:10:32] <roycroft> oh, it is?
[01:10:35] <PetefromTn_> 12x36
[01:10:52] <zeeshan> you didnt have a qiuck change tool post for it ?
[01:10:58] <PetefromTn_> yeah I got some big chunks around here LOL
[01:11:04] <PetefromTn_> yeah I made it LOL
[01:11:09] <zeeshan> looks nice man
[01:11:11] <PetefromTn_> was one of the first things I ever made
[01:11:19] <PetefromTn_> it was aluminum believe it or not
[01:11:21] <roycroft> so is there a big advantage to a gear had lathe that i'm not seeing?
[01:11:36] <PetefromTn_> meh just quick speed changes
[01:11:43] <zeeshan> perhaps more torque.
[01:11:50] <zeeshan> if i was given a choice
[01:11:51] <roycroft> more torque would be an advantage
[01:11:54] <zeeshan> i wouldnt go with a gear head.
[01:11:58] <zeeshan> its too noisey
[01:12:09] <zeeshan> i'd try to get more torque out of different pulley sizes.
[01:12:10] <roycroft> well the non gear head model is $300 less
[01:12:11] <PetefromTn_> you usually get a nicer finish on a belt driven lathe
[01:12:16] <zeeshan> why pete
[01:12:19] <zeeshan> less vibration?
[01:12:24] <PetefromTn_> I guess so
[01:12:35] <roycroft> and as i said, it has a wider range of feed speeds
[01:12:45] <zeeshan> what are they exactly
[01:12:55] <roycroft> one moment
[01:12:58] <PetefromTn_> do you plan on making it CNC
[01:13:27] <PetefromTn_> zeeshan your lathe seems to work pretty nice man
[01:13:35] <zeeshan> PetefromTn_: just not happy with some things
[01:13:41] <PetefromTn_> and it will probably do most of what you need
[01:13:45] <zeeshan> x axis ball screw one of them
[01:13:48] <zeeshan> i guess just need to fi xit
[01:13:52] <PetefromTn_> yeah
[01:14:18] <zeeshan> i dont know if the dove tail needs to be ground
[01:14:24] <PetefromTn_> I want to get a nice 3 jaw chuck with machinable jaws
[01:14:25] <roycroft> 0.0011" - 0.0310" in/rev longitudinal for the belt drive
[01:14:37] <zeeshan> PetefromTn_: those are nice
[01:14:44] <zeeshan> $$$$ though
[01:14:48] <roycroft> 0.0020" - 0.0548" /rev for the gear head
[01:14:57] <roycroft> so i guess lower range, not wider range
[01:15:10] <zeeshan> youre like never gonna need 0.001" / rev
[01:15:12] <PetefromTn_> looks like the gear head has a wider range
[01:15:18] <roycroft> 0.0310"/rev is pretty fast though to me
[01:15:21] <PetefromTn_> do you plan to make it CNC/
[01:15:29] <roycroft> probably not
[01:15:29] <zeeshan> you need to give like .007" / rev for most finishing inserts
[01:15:31] <roycroft> but i don't know
[01:15:31] <zeeshan> er
[01:15:33] <zeeshan> 0.004"
[01:15:49] <PetefromTn_> if you ever plan to CNC it most of that does not really matter
[01:16:00] <roycroft> right
[01:16:06] <zeeshan> youre gonna be chucking the quick change gear box in the garbage
[01:16:06] <zeeshan> :-)
[01:16:16] <PetefromTn_> pretty much
[01:16:22] <zeeshan> or using it as a go kart gear shifter
[01:16:22] <zeeshan> haha
[01:16:26] <PetefromTn_> the threading gearbox anyway
[01:16:42] <roycroft> i can see converting a knee mill to cnc
[01:16:50] <roycroft> but i'll likely just keep the lathe manual
[01:16:53] <roycroft> but one never knows
[01:17:13] <zeeshan> i personally dont think the extra 300$ is needed.
[01:17:18] <PetefromTn_> I would just buy a used CNC knee mill..
[01:17:44] <zeeshan> PetefromTn_: lol i would disagree with you
[01:17:46] <zeeshan> about a couple months ago
[01:18:04] <zeeshan> i'm so glad i didnt cnc the bridgeport clone
[01:18:09] <zeeshan> that woulda been 239030921398213 more work
[01:18:20] <zeeshan> ball screw change, blah blah
[01:18:28] <zeeshan> spindle change to iso30
[01:18:43] <PetefromTn_> how is that disagreeing with me?
[01:18:43] <zeeshan> and at the end of the day, its still a machine that when you hang off the head and apply like 150lb
[01:18:55] <zeeshan> the spindle head deflects 2 thou
[01:19:38] <PetefromTn_> you'll get no arguement from me. I never really liked Bridgeports
[01:19:53] <zeeshan> i was saying i'd disagree with you to grab a used cnc mill a couple months ago
[01:20:00] <PetefromTn_> what I meant was I would find a nice tree mill or something and
[01:20:07] <PetefromTn_> retrofit it
[01:20:11] <zeeshan> yea
[01:20:16] <zeeshan> or even a bridgeport boss series
[01:20:21] <roycroft> a used bridgeport in decent shape would be better than my mill drill
[01:20:30] <zeeshan> roycroft: i owned a mill drill for a week
[01:20:34] <zeeshan> im glad its sold and gone :P
[01:20:39] <roycroft> i've owned mine for four years
[01:20:42] <PetefromTn_> oh really?
[01:20:46] <zeeshan> it loses fucking tram
[01:20:49] <zeeshan> after you move the head up
[01:20:59] <roycroft> mine doesn't
[01:20:59] <PetefromTn_> why?
[01:21:07] <zeeshan> cause its on a shitty column
[01:21:09] <roycroft> it has a dovetail upright
[01:21:12] <zeeshan> oh
[01:21:14] <roycroft> not a round column
[01:21:15] <zeeshan> thats a diff story
[01:21:25] <roycroft> i figured that much out before i bought it :)
[01:21:30] <PetefromTn_> might have needed to be shimmed
[01:21:32] <zeeshan> i bought mine to flip it
[01:21:37] <zeeshan> and try it
[01:21:43] <zeeshan> i was gonna keep it, but its too shitty to keep
[01:22:07] <PetefromTn_> I liked mine..
[01:22:13] <roycroft> yeah, i would not be able to stand a round column one
[01:22:14] <PetefromTn_> it was a neat little thing
[01:22:23] <roycroft> i'd be spending half my time retramming it
[01:22:31] <zeeshan> duide
[01:22:36] <zeeshan> it goes out by like 12 thou.
[01:22:44] <zeeshan> after moving the head up 2 inches
[01:23:03] <PetefromTn_> never experienced that on mine
[01:23:07] <zeeshan> https://www.flickr.com/photos/128539016@N05/16251092485/
[01:23:11] <zeeshan> you can see it here
[01:23:14] <roycroft> there's no way i could ever make money with my mill drill
[01:23:20] <roycroft> but i can make decent parts
[01:23:31] <roycroft> and that's what i wanted and needed at the time
[01:23:36] <zeeshan> https://www.flickr.com/photos/128539016@N05/16023467657/
[01:23:37] <zeeshan> better pic
[01:24:13] <zeeshan> i have a question for you guys
[01:24:16] <bobo_> your Mikron has a quill in vert head. ---pitch the drill press
[01:24:19] <zeeshan> why are bloody machines all GREEN?
[01:24:28] <zeeshan> bobo_: no
[01:24:33] <zeeshan> i thought about it
[01:24:37] <roycroft> folks do funky things like mounting lasers on their mill drill head and making marks on the wall to indicate when it's trammed
[01:24:39] <PetefromTn_> mines not
[01:24:40] <bobo_> envy=green
[01:24:41] <zeeshan> drill press has way more capacity in height
[01:24:54] <PetefromTn_> thats not tram
[01:25:19] <zeeshan> whats not tram
[01:25:41] <zeeshan> im talking about the head rotating
[01:25:46] <zeeshan> along axis of column
[01:25:47] <PetefromTn_> yeah that is not tram
[01:25:56] <zeeshan> so your vise is not perpndicular anymore
[01:26:00] <zeeshan> i thought it was?
[01:26:04] <roycroft> yeah, it's not
[01:26:08] <zeeshan> what is it then
[01:26:18] <roycroft> i was thinking the same thing, but petefromtn_ is right
[01:26:30] <PetefromTn_> tramming means making your spindle axis perpendicular to the table
[01:26:31] <roycroft> tram is the head being perpendicular to the table
[01:26:40] <zeeshan> okay fair enough
[01:26:53] <zeeshan> rotation about Y axis.
[01:26:58] <zeeshan> rotation about X axis is knod
[01:27:02] <PetefromTn_> about column
[01:27:04] <zeeshan> i guess this is rotation about column
[01:27:19] <zeeshan> PetefromTn_: yes
[01:27:23] <zeeshan> but along the x direction
[01:27:26] <PetefromTn_> yeah that is the only drawback to the mill drills like that
[01:27:36] <roycroft> yes, and you have to reindex every time you move the head because of that
[01:27:46] <PetefromTn_> if you plan your cuts out tho you can work around it
[01:27:47] <roycroft> but the ones with the dovetail column don't have that problem
[01:27:59] <PetefromTn_> no they have other problems he
[01:27:59] <roycroft> they just have the problem of being really light and vibrating a lot
[01:27:59] <zeeshan> yea roycroft
[01:28:05] <roycroft> and not being able to take big cuts
[01:28:32] <zeeshan> going frtom a bridgeport clone to this
[01:28:35] <zeeshan> is like ultra down grade
[01:28:36] <zeeshan> ahha
[01:28:36] <PetefromTn_> do you have an RF45?
[01:29:32] <roycroft> i have a this one:
[01:29:34] <PetefromTn_> well I am beat guys. Heading to bed. Maybe tomorrow night I will try to tackle the analog input control again.
[01:29:34] <roycroft> http://grizzly.com/products/Mill-Drill/G0463
[01:29:52] <roycroft> it gets me by, but barely
[01:29:56] <PetefromTn_> ah ok
[01:30:04] <PetefromTn_> that is the X3 or something like that
[01:30:06] <roycroft> yes
[01:30:22] <roycroft> it's worth what i paid for it, for sure
[01:30:26] <roycroft> but it did not cost very much
[01:30:43] <PetefromTn_> well gn8
[01:30:49] <roycroft> ciao
[01:33:12] <bobo_> instead of the piston or wedge tool holders check out the multi flex (sp)
[01:33:38] <zeeshan> roycroft: that machine looks a billion times better
[01:34:13] <zeeshan> bobo_: i dont like that style of tool holder
[01:34:18] <zeeshan> you have to set your tool heights properly
[01:34:22] <zeeshan> otherwise you'll crash tools into the spindlke
[01:34:32] <zeeshan> im gonna stick to manual tool changer
[01:35:35] <bobo_> they are adj for tool height
[01:36:10] <roycroft> it's better than a round column mill
[01:36:33] <roycroft> a lot of folks cnc those little mill drills
[01:36:42] <roycroft> i was considering it, but decided it would be a waste of time and money
[01:36:43] <archivist> round column mills should be melted down
[01:37:22] <archivist> only use for them are as sturdy bend drills
[01:37:28] <zeeshan> lol
[01:40:24] <roycroft> i'm still thinking about getting a power feed for my mill drill
[01:41:19] <archivist> this type of junk is what I had http://www.diycnc.co.uk/html/my_project.html
[01:41:24] <roycroft> after cranking on it for hours on end last weekend i'm seriously thinking about it
[01:41:39] <roycroft> and i often take heavier cuts than i should because i don't want to crank it all day
[01:41:45] <roycroft> a power feed would take care of that
[01:42:01] <bobo_> archivist what is the name of the quick change tool holder base that mating cutting tool holder area is in shape of a "C" with vertical flutes ?
[01:42:04] <roycroft> they're $300, which isn't too bad
[01:44:44] <zeeshan> http://www.ebay.com/itm/GS-TOOLING-531424C-ER-32-COLLECT-CHUCK-CAT-40-NEW-/371240702930?pt=LH_DefaultDomain_0&hash=item566fab93d2
[01:44:46] <zeeshan> is this made in china ?
[01:45:19] <archivist> or india
[01:47:30] <archivist> or may be genuine surplus and made in a better place, look at the certificate and trace the names
[01:48:02] <zeeshan> okay
[01:48:49] <bobo_> name = Halmar ?
[01:50:50] <zeeshan> sowa distributes it
[01:52:32] <archivist> a google finds eastern europe sellers for halmar
[02:01:57] <zeeshan> these gs tools look
[02:01:58] <zeeshan> VERY nice
[02:03:20] <bobo_> hgr is in cleveland , oh
[02:03:29] <zeeshan> bobo send me some tools!
[02:04:24] <bobo_> they are being held at the border now
[02:04:35] <zeeshan> ;[
[02:26:03] <Deejay> moin
[04:07:41] <Guest78263> hm a probe tool with 10x10 points insted of 1 point ... that would realy speed up flat 3d probing...
[04:08:16] <Guest78263> guest...
[04:08:18] <Guest78263> what the heck
[04:10:03] <mrsun_> getting thatmy nick is unavailable but there is no one to ghost ..
[04:12:08] <archivist> has someone stolen it, had you got it protected
[04:12:51] <archivist> with nick troubles goto #freenode and ask a staffer
[04:21:03] <mrsun_> well i had it ... then it went for 30 seconds and it changed to guest nick .. now i cant change back :P
[04:21:15] <mrsun_> oh well ... not so important now =)
[08:22:26] * jthornton wonders why Ubuntu 10.04 can use the GPU properly on this computer and Wheezy can not... maybe time to find a new MB
[08:22:41] <jthornton> and get back to programming
[08:24:40] <archivist> or time to file a bug report
[08:25:27] <archivist> some lazy SOBs not bothering to support older stuff these days
[08:25:57] <malcom2073> Seriously, if Linus is ok with supporting 1987 hardware, so should they be.
[08:26:15] <jthornton> how can I tell what motherboard I have?
[08:26:26] <archivist> read the label?
[08:27:09] <malcom2073> Heh.... I don't know that there is anything in /proc that would list like a model number
[08:27:18] <jthornton> I thought there might be a terminal command for that
[08:27:37] <jthornton> this is the GPU nVidia Corporation C61 [GeForce 6150SE nForce 430] (rev a2)
[08:28:43] <jthornton> also Ubuntu 12.04 did not recognize the GPU
[08:29:04] <malcom2073> May be time to grab a freecycle PC to upgrade
[08:29:20] <malcom2073> Or whatever equivalant scrap place in your country
[08:30:01] <archivist> last freecycle pc I got was seriously brain damaged
[08:30:19] <jthornton> this might be a bug report on it already https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742930
[08:30:20] <malcom2073> Most of them I find just have bad hard drives
[08:31:27] <jthornton> I'll have to inventory my pile and see what I have
[08:33:20] <jthornton> note to self, don't lean on the power button when taking the cover off
[08:33:47] <jthornton> no name on the top side of the motherboard
[08:34:22] <jthornton> it's a fairly recent motherboard I think
[08:35:53] <jthornton> found the box it
[08:36:03] <jthornton> 's a 2010 motherboard Zotac
[08:36:58] <malcom2073> That's practically new
[08:37:13] <jthornton> yea, that's what I was thinking
[09:31:57] <mozmck> jthornton: you might try something like xubuntu 14.04
[09:32:49] <mozmck> I wonder if the problem is partly because the newer systems use 3d stuff for the compositing window managers.
[09:32:50] <_methods> amen
[09:32:58] <_methods> xubuntu FTW
[09:33:44] <mozmck> hmm, I think xfce does compositing as well - lxde does not I think.
[09:34:53] <cradek> xfce4 does it optionally
[09:35:25] <cradek> jthornton: do you want to run hardware with this machine that has the nvidia card?
[09:38:38] <JT-Shop> cradek no, I just want to program in python and run linuxcnc simulator
[09:39:20] <cradek> if you just use the normal debian kernel nvidia will surely work
[09:39:43] <cradek> I mean that's what I'm typing on
[09:39:44] <JT-Shop> I tried the http://cdimage.debian.org/debian-cd/current-live/i386/iso-hybrid/debian-live-7.8.0-i386-gnome-desktop.iso
[09:39:52] <mozmck> he tried the wheezy gnome3 install
[09:39:59] <JT-Shop> this morning and got a Gnome 3 error
[09:40:17] <cradek> oh, I have never tried gnome3
[09:40:23] <mozmck> gnome3 doesn't work on lots of stuff though.
[09:40:25] <cradek> I must have misunderstood what was going on
[09:40:38] <mozmck> that's on the ML
[09:40:41] <cradek> you could use our install, then change kernels and add nvidia
[09:40:51] <JT-Shop> from this page any suggestions on what to try http://cdimage.debian.org/debian-cd/current-live/i386/iso-hybrid/
[09:41:18] <cradek> http://cdimage.debian.org/debian-cd/current-live/i386/iso-hybrid/debian-live-7.8.0-i386-xfce-desktop.iso would be most like what I'm using
[09:41:45] <mozmck> I've had better luck in the past with ubuntu for hardware support, but you did way you tried 12.04
[09:42:17] <mozmck> say, not way
[09:42:27] <JT-Shop> yes I tried 12.04 the other day
[09:42:41] <JT-Shop> I can d/l xfce tonight and try it tomorrow
[09:43:05] <JT-Shop> I get unlimited d/l between midnight and 5am
[09:43:36] <cradek> what images do you already have?
[09:43:47] <mozmck> are you on satellite?
[09:44:10] <JT-Shop> yes satellite
[09:44:50] <JT-Shop> debian-live-7.8.0-i386-gnome-desktop.iso
[09:45:10] <JT-Shop> linuxcnc-2.7-wheezy.iso
[09:45:45] <JT-Shop> I found uGet and it schedules downloads for the free time
[09:47:08] <cradek> I'd start with the linuxcnc one, add the normal kernel, reboot, add nvidia-glx
[09:47:09] <JT-Shop> mainly I want a recent version of Geany to work with my python programming
[09:47:30] <JT-Shop> how do you add a kernel?
[09:48:07] <JT-Shop> this computer in the shop is running wheezy with nvidia
[09:48:21] <cradek> apt-get install linux-image-686-pae
[09:48:32] <JT-Shop> ok
[09:48:53] <JT-Shop> then I can pick that one on boot up
[09:48:57] <cradek> yep
[09:49:05] <cradek> then boot it and apt-get install nvidia-glx
[09:49:12] <JT-Shop> ok, I'll do that when I get back from town
[09:51:02] <cradek> this looks like the right instructions: https://wiki.debian.org/NvidiaGraphicsDrivers#Version_304.125
[09:51:10] <unfy> zomg, i remember why i quit going to this one local bakery. ssssssssoooooooooooo good <3
[09:51:16] <cradek> (although it's not exactly what I've done here)
[09:51:55] <unfy> the debian wiki discusses how to install non free software?! heresy!
[09:52:48] <JT-Shop> I tried the instructions on that page and it would not boot after
[09:53:18] <JT-Shop> or gave me an error about something I can't remember which
[09:56:19] <cradek> would not boot, or X didn't start right?
[09:58:23] <jthornton> yes
[10:11:48] <unfy> yay, a half dozen cheap chinese small bipolar stepper driver boards arrived (at $1 a piece). i can test a bunch of small steppers i have yay.
[10:17:13] <SpeedEvil> Bipolar stepper boards only work well half of the time
[10:23:51] <unfy> >_>
[10:23:53] <archivist> bipolar are rather better than unipolar
[10:43:54] <roycroft> bipolar stepper boards work fine as long as they take their meds
[10:49:08] <malcom2073> Unless they're teenagers, then they don't work at all, just sit around whining about life
[11:04:43] <roycroft> is anyone here familiar with precision matthews machinery?
[11:05:01] <roycroft> it's the same type of clone stuff that grizzly/jet/hf/enco sell
[11:05:28] <roycroft> i just wonder if the fit and finish are on the better side or the crappier side of that class of machines
[11:17:33] <PetefromTn_> morning folks
[11:35:41] <archivist> roycroft, you need to find out if they takes the stuff to bits to remanufacture
[11:38:26] <archivist> roycroft, eg most in the uk never did, one gave you a manual to do ones own rebuild, one went bust that actually did
[11:43:59] <roycroft> yes, that's what i'm trying to determine
[11:44:03] <roycroft> how much of a kit it is
[11:44:43] <roycroft> i'm looking at 12x36 lathes, and the pm is priced nicely
[11:44:50] <roycroft> it has a foot brake too
[11:44:57] <roycroft> which none of the others i'm looking at have
[11:45:08] * SpeedEvil has a sheet-metal brake and does not need a foot-brake.
[11:45:24] <roycroft> but if it's on the hf end of the scale, i'd have to disassemble it significantly and it might take me weeks to get it operational
[11:46:06] <roycroft> i've never used the foot brake on a lathe
[11:46:22] <roycroft> it was hammered into me in my classes that it's an important safety feature
[11:46:44] <roycroft> i don't see it personally as a must-have feature
[11:47:17] <roycroft> but if i had a choice of two otherwise identical lathes for the same price, one with and one without the foot brake, i'd choose the one with it
[11:55:31] <archivist> I have never used a foot brake on a lathe, only one at the clockworks had the facility and it was a production machine out of use
[11:56:23] <roycroft> i've never crashed a lathe (or a mill)
[11:56:34] <roycroft> nor gotten a body part caught in one
[11:56:49] <roycroft> had i done either i might have found the foot brake useful
[11:57:09] <PetefromTn_> I like the foot brake
[11:57:16] <archivist> I think it would have been to late
[11:57:22] <roycroft> but i think it's better to avoid crashing machinery and mangling body parts
[11:57:57] <archivist> I think the brake would be useful for part changing more than anything
[11:57:57] <roycroft> if i had one and i started using it i might like it, petefromtn_
[11:58:03] <PetefromTn_> make enough parts and have to come up with challenging setups and whatnot and it is inevitable...
[11:58:05] <roycroft> i just got used to operating the lever
[11:58:39] <roycroft> but i suppose that i could free up the hand that operates the lever to do something else while turning the machine off with the foot brake
[11:58:47] <roycroft> i could see it as a time saver
[11:59:10] <roycroft> i'm not doing production work howevrer
[11:59:16] <archivist> if you are using a lever collet clamp and working rapidly....
[11:59:19] <PetefromTn_> the lever is not a brake just a power switch the brake actually kills power and stops the spindle
[11:59:24] <roycroft> which is not to say i'll never do production work
[11:59:54] <roycroft> right
[12:00:04] <roycroft> the foot brake actually stops the machine quickly?
[12:00:11] <PetefromTn_> absolutely
[12:00:12] <roycroft> i thought it just turned off the lever
[12:00:34] <roycroft> as i've said, i have never used one :)
[12:00:38] <PetefromTn_> it would be pretty useless if it just killed power a big red button can do that...
[12:00:45] <roycroft> we had foot brakes on the lathes at school
[12:01:26] <roycroft> sure, but the foot brake is potentially easier to use as it runs most of the length of the bed and is always really close to your foot
[12:01:30] <roycroft> no reaching required
[12:01:32] <roycroft> just stomping
[12:01:37] <PetefromTn_> yes
[12:02:30] <PetefromTn_> never seen a benchtop lathe with a footbrake tho
[12:02:47] <roycroft> if it actually stops the machine more quickly than turning the lever off it could save a significant amount of time
[12:03:10] <roycroft> 12x36 is the smallest lathe i've ever seen with one
[12:03:14] <roycroft> and most of them don't have it
[12:03:25] <roycroft> 13x40 is where they seem to become common
[12:03:54] <renesis> school lathes ive used have the brake on the same lever as the spindle engage
[12:04:24] <renesis> like, pull up and spindle moves, back to middle and spindle free spins, push down and it brakes
[12:04:53] <PetefromTn_> usually push down and it reverses...
[12:05:10] <renesis> reverse is usually some drama at the gear box
[12:05:11] <PetefromTn_> are you sure you were not just quickly reversing it stopping the spindle?
[12:05:19] <renesis> these are like 40 year old machines, heh
[12:05:36] <PetefromTn_> what kind of machine was it?
[12:05:44] <renesis> no, it doesnt move gears, you get a damped friction braking feel from it
[12:06:30] <PetefromTn_> neither does this...it is all electrical.
[12:06:31] <renesis> at exschool they we le blondes, at this one clausing? dunno if thats spelled right
[12:07:06] <PetefromTn_> not saying you are wrong I just have never seen one like that...
[12:07:16] <renesis> yeah this is old shit, manual gear changes, very clunky feeling so you know when youre changing stuff in the gearbox
[12:07:21] <renesis> down is definitely a brake
[12:07:34] <renesis> but this convo is exactly why i wont just walk up to a lathe and use it
[12:07:38] <PetefromTn_> I have run PLENTY of Old lathes LOL
[12:07:54] <renesis> bunch of random knobs and levers at first
[12:08:13] <renesis> a mill im like whatever, walk right up to it and go to work
[12:08:21] <PetefromTn_> yeah big Old lathes can be kinda scary to me at first...
[12:08:29] <renesis> and theyre all diff
[12:08:39] <PetefromTn_> especially if it is a bigass gear head model
[12:08:53] <PetefromTn_> they have SO MUCH POWER espcially at lower RPMs
[12:08:54] <renesis> even same type, theyll wear diff so the timing and feel of all the controls will be noticably diff
[12:10:23] <PetefromTn_> I was recently doing some deep drilling in stainless bartstock at this local shop.
[12:10:39] <PetefromTn_> they have a 16x80 manual lathe there
[12:10:53] <PetefromTn_> it is a really nice clean machine and it seems to be very accurate
[12:11:09] <PetefromTn_> but that damn thing is SO powerful
[12:11:16] <renesis> damn, big
[12:11:19] <roycroft> 16x80 probably weights 2-1/2 or 3 tons
[12:11:25] <roycroft> maybe a bit more
[12:11:28] <PetefromTn_> I was drilling with a 1.125" drill bit
[12:11:36] <roycroft> plenty of mass to help it run smoothly
[12:11:39] <PetefromTn_> being VERY careful to retract a lot
[12:11:49] <PetefromTn_> and flooding it with a coolant bottle
[12:11:59] <PetefromTn_> spinning pretty slow for the stainless
[12:12:16] <PetefromTn_> I pushed the tailstock up against it for another pass
[12:12:19] <renesis> yeah ill stick to me .012" drill bits thanks
[12:12:24] <PetefromTn_> started screwing the ram in
[12:12:26] <renesis> lot less drama when shit goes wrong
[12:12:35] <PetefromTn_> and then I heard this LITTLE snap sound
[12:12:47] <PetefromTn_> I looked and realized the drill bit was spinning...
[12:13:00] <PetefromTn_> it had snapped in half and was stuck inside the barstock....
[12:13:05] <renesis> fucked
[12:13:15] <PetefromTn_> machine didn't even slow or nothing..
[12:13:54] <PetefromTn_> luckily I was able to drop it in LOW LOW gear and using a bigass channel lock remove the broken bit and continue on to a perfect part..
[12:14:10] <roycroft> that was very fortunate
[12:14:16] <PetefromTn_> UNBELIEVABLY powerful machine..
[12:14:28] <roycroft> like 10hp?
[12:14:41] <PetefromTn_> I have little doubt it would snap off a bit twice that size
[12:14:59] <PetefromTn_> now here's the funny part...
[12:15:09] <PetefromTn_> that is a VERY SMALL LATHE as industry goes...
[12:15:44] <PetefromTn_> there are plenty of lathes large enough to chuck up this lathe and spin it like a workpiece in the world.
[12:16:30] <roycroft> yeah
[12:16:44] <roycroft> it's nice to work on a lathe that size, even when you're doing small work
[12:17:02] <roycroft> almost everything i ever want/need to turn could be done on my 7x12 mini-lathe
[12:17:21] <roycroft> but the bed is not flat and the damn thing vibrates so much when i ask it to do any real work that i need to move up to something with more mass
[12:17:27] <roycroft> and has a flat bed :)
[12:23:53] <archivist> do you mean flat or straight :)
[12:24:26] <archivist> bent can be pulled straight
[12:26:13] <archivist> I had a lathe not that good, went to a remachining company, the old guy asked, is it mounted on wood?, ues, there is your problem....
[12:28:10] <roycroft> it has waves
[12:28:47] <archivist> you can fix that by scraping and a level
[12:28:50] <roycroft> yes
[12:29:54] <roycroft> and some day i might do that
[12:30:06] <roycroft> it would be useful set up to cut metric threads
[12:30:18] <roycroft> right now it's all but useless for anything
[12:31:07] <roycroft> and i have a project that i want to make that will require knurling 2-1/2" stainless steel rollers
[12:31:13] <roycroft> i know the 7x12 won't handle that
[12:31:25] <roycroft> a 12x36 might struggle with it a bit, but it should be able to handle it
[12:32:01] <roycroft> i'd use a clamp type knurling tool, of course
[12:32:14] <archivist> knurling with a balanced tool is easier
[12:32:36] <roycroft> balanced tool?
[12:32:43] <roycroft> are you talking about what i call a clamp type?
[12:33:01] <roycroft> with a knurling wheel on the top and one on the bottom that you squeeze together?
[12:33:10] <archivist> yes, force is either side
[12:33:12] <roycroft> right
[12:33:20] <roycroft> that's what i've used almost all of the time
[12:33:32] <roycroft> i like them a lot better than the ones you just push into the work from one side
[12:34:18] <roycroft> even for really small work the press type requires a tremendous amount of force
[12:34:37] <archivist> some are supposed to cut not have a lot of pressure
[12:35:03] <roycroft> is that really knurling though, if you're cutting?
[12:35:41] <archivist> has the same result
[12:36:09] <roycroft> at least close to the same appearance
[12:36:39] <PetefromTn_> I used a clamp style knurl to work on stainless and steels many times in my old 12x36 without issue...
[12:36:45] <archivist> I have milled the form too
[12:37:10] <roycroft> yeah, petefromtn_, i would not be afraid to use that type for really large work in a 12x36
[12:37:32] <roycroft> the clamp type doesn't tax the lathe itelf much at all
[12:37:44] <roycroft> almost all of the force is being applied by the tool itself
[12:37:57] <roycroft> the lathe just has to guide it
[12:38:38] <roycroft> i have the biggest clamp type that the quick change toolpost on my mini-lathe can handle
[12:38:47] <roycroft> and it has a 2" maximum capacity
[14:31:02] <PetefromTn_> Woot!
[14:31:16] <_methods> yo
[14:31:25] <PetefromTn_> just got a brand spankin' issue of Digital Machinist magazing in the mail...
[14:31:33] <PetefromTn_> and the best part is I did not even order it heh
[14:31:45] <jdh> I got one yesterday
[14:31:55] <jdh> it annoyed me as usual.
[14:32:14] <jdh> worse since I pay for them.
[14:32:17] <PetefromTn_> a free magazing annoyed you?
[14:32:50] <jdh> wasn't free.
[14:33:16] <jdh> if they would just change the column name "Along the G-Code Way" to something else, I'd be fine.
[14:34:01] <_methods> amazon prime $72/year tomorrow only i guess
[14:35:41] <_methods> http://www.cnet.com/how-to/amazons-one-day-offer-72-prime-membership/
[14:35:58] <PetefromTn_> OMG
[14:36:25] <PetefromTn_> those have got to be the crappiest chocolate molds and resulting chocolate candies I have ever seen hehe
[14:37:03] <jdh> yep
[14:40:08] <zeeshan> 1/2 3/8 1/4
[14:40:11] <PetefromTn_> hopefully it is not someone on here hehe
[14:40:12] <zeeshan> msot common collets yea?
[14:40:26] <PetefromTn_> 1/8?
[14:40:33] <zeeshan> hm
[14:40:36] <jdh> I like 3/8
[14:40:44] <jdh> for my range of uses
[14:41:03] <jdh> I have 1/16 - 3/8" end mills with 3/8 shanks
[14:41:19] <zeeshan> just chcked
[14:41:20] <zeeshan> same ehre
[14:41:25] <zeeshan> i do have a couple carbide ones
[14:41:28] <zeeshan> thare are 1/8 shank though
[14:41:35] <zeeshan> f it
[14:41:37] <zeeshan> if i need it inthe future
[14:41:38] <zeeshan> ill get
[14:41:45] <zeeshan> i just wanna get started with the basics
[14:41:51] <zeeshan> drilling, facing and 1 er collet chuck
[14:41:56] <PetefromTn_> just get a set and a couple doubles
[14:42:03] <zeeshan> im gonna try the chinese ones
[14:42:10] <zeeshan> i ordered 1 mari tool er32 chuck too
[14:42:16] <zeeshan> gonna compare and see if there is a big diff
[14:43:52] <jdh> ER20 goes up to half inch
[14:44:22] <jdh> anything bigger than that and I use an R8 collet
[14:44:23] <zeeshan> i dunn oif a drill chuck
[14:44:25] <zeeshan> is needed on a mill
[14:44:31] <zeeshan> most of the time i see people holding them in collets
[14:44:37] <zeeshan> and just swapping tools
[14:44:48] <zeeshan> jdh: ah okay
[14:44:48] <jdh> that's a pain
[14:44:59] <zeeshan> well in cnc app
[14:45:00] <zeeshan> when youre repeating
[14:45:01] <jdh> spot drill, small drill, real drill
[14:45:29] <zeeshan> opkay drill chuck it is
[14:45:31] <jdh> I'm the tool changer, R8 jacobs is good
[14:45:34] <zeeshan> i just wanna get started
[14:45:38] <zeeshan> im thinking of the first 3 parts i gotta make
[14:45:41] <zeeshan> i know ill need 1/2" end mill
[14:45:42] <zeeshan> a face mill
[14:45:49] <zeeshan> and i gotta drill holes 3/8"
[14:45:55] <zeeshan> (10mm)
[14:46:31] <PetefromTn_> a collet holder is only suitable replacement for a drill chuck if you have a LOT of collets in lots of sizes...
[14:46:44] <zeeshan> yes
[14:46:48] <zeeshan> but it seems like these guys order a collet
[14:46:52] <zeeshan> + collet chuck for each common drill
[14:46:56] <zeeshan> like for example spot drill
[14:47:02] <zeeshan> you know you'll always be using one kind most of the time
[14:47:05] <zeeshan> so they keep dedicated one
[14:47:08] <jdh> for production where where tool changing time is money
[14:47:15] <zeeshan> well its not just that
[14:47:24] <zeeshan> you dont want to hgave to tool set in the middle of a run
[14:47:31] <zeeshan> i have to make 8 flanges
[14:47:40] <zeeshan> it would suck having to set the center drill
[14:47:45] <zeeshan> then set the 3/8 hole
[14:47:58] <zeeshan> im thinking center drill -> 1 tool, 3/8 drill -> 3/8 collet
[14:49:13] <zeeshan> hopefully it pays off for the tools
[14:49:14] <zeeshan> :/
[14:53:47] <PetefromTn_> you can NEVER have enough toolholders man
[14:53:58] <PetefromTn_> or collets
[14:55:22] <PetefromTn_> while I have a couple endmill holders there is no discounting the fact that collet chucks in various sizes are very adaptable..
[15:00:25] <jthornton> finally got the monitor right... change in motherboards helped... it didn't like the HDMI cable for sure
[15:02:02] <jthornton> running wheezy with LinuxCNC 2.7 YEA!
[15:02:40] <jthornton> other than a noisy fan on the video card all is well
[15:41:48] <zeeshan> fak i hate dealing with non standard fittings!
[16:02:33] <skunkworks> zlog
[16:30:26] <Deejay> gn8
[16:44:09] <georgenz> Hey everyone im new round these here parts. Trying to do same conversion as pete frm tn. But im stuck at the first few steps
[16:51:54] <georgenz> I have a mesa 5i25 paired with a 7i77 just staring up the pncconf wizard
[16:56:05] <georgenz> Looking at axis geometry... what does W and H stand for?
[17:02:45] <georgenz> Heya pete
[17:02:52] <PetefromTn_andro> Hey a...
[17:04:19] <PetefromTn_andro> Hey man. Everyone this is my good friend in New Zealand who has the same machine Cincinnati Arrow500 I have..
[17:05:01] <PetefromTn_andro> We are both going to have the same stupid questions hehehe
[17:05:34] <PetefromTn_andro> Right now he is working thru the pncconf setup on the machine
[17:06:18] <PetefromTn_andro> He has all of the configuration information from my machine before I converted it from metric to imperial dimensions
[17:06:32] <LeelooMinai> Is New Zealand that place that Aussies always make fun of? :)
[17:07:28] <georgenz> I think its more the other way arnd?
[17:07:57] <LeelooMinai> I heard them saying "Kiwis" or something like that:)
[17:08:43] <georgenz> Ya...well thats wot we r. Not so much as the fruit
[17:31:29] <zeeshan> http://i.imgur.com/nvVw3Cz.gif
[17:31:35] <zeeshan> LOL
[17:39:05] <georgenz> Hey guys... anyone familiar with configuring mesa 7i77?
[17:39:43] <cradek> georgenz: to avoid snark and get good answers, always go ahead and ask your real question right away
[17:40:00] <zeeshan> georgenz: what do you need to know
[17:41:37] <georgenz> Ok... im tryin to setup 5i25 with 7i77 using pncconfig wiz. Lookin at setup screen it has sanity checks showing tick boxes with 7i29 7i30 7i33 7i40 and 7i48 twhat does this mean and how come 7i77 isnt there
[17:44:11] <zeeshan> just uncheck em
[17:44:15] <zeeshan> you already selected 7i77
[17:44:18] <zeeshan> in the previous screen
[17:44:43] <zeeshan> unless you have those as daughter boards.
[17:45:22] <georgenz> The only selection I jave that seems possible under firmware is '7i77x2 With One 7i77'
[17:45:49] <zeeshan> do you have one ?
[17:45:59] <georgenz> Yup
[17:46:05] <zeeshan> yea thats all you need to select
[17:46:44] <georgenz> Jst the sanity check.. im not sure abt. 7i33 is ticked there but i dont have one
[17:47:14] <zeeshan> uncheck it :)
[17:47:34] <georgenz> Done
[17:47:39] <georgenz> Thx
[17:47:42] <zeeshan> np
[17:55:15] <georgenz> When setting axis motor encoder config, do I jst leave the pid settings at 1,0,0 and try tune later? ..
[17:56:21] <jthornton> georgenz, http://gnipsel.com/linuxcnc/tuning/index.html
[17:56:59] <georgenz> Thx
[17:58:12] <zeeshan> https://www.flickr.com/photos/128539016@N05/16335687835/
[17:58:15] <zeeshan> anyone ever see this fitting ?
[17:58:25] <zeeshan> https://www.flickr.com/photos/128539016@N05/16156436569/
[17:58:32] <zeeshan> it seals inside that fitting.
[17:58:37] <zeeshan> tube nut holds it in place
[17:58:42] <zeeshan> its metric
[17:59:09] <jthornton> yea, seen them before
[17:59:25] <jthornton> has a insert to support the id of the tube?
[17:59:28] <zeeshan> yes.
[17:59:32] <zeeshan> man! what are they called
[17:59:40] <zeeshan> ive been searching for a while
[17:59:54] <jthornton> mcmaster carr
[18:01:06] <zeeshan> http://www.mcmaster.com/#5016k381/=vli0x2
[18:01:10] <zeeshan> hmm
[18:01:24] <zeeshan> the hose is polyamide / nylon
[18:19:19] <unfy> i wish there was a poor man's mcmaster. while their prices aren't horrible and the quality is usually good - i don't need that :P. i need a piece of poop!
[18:20:19] <Tom_itx> never actually heard anybody gripe about good quality
[18:20:34] <unfy> heh
[18:20:50] <unfy> there are times when i want quality. there are times i want poop.
[18:20:51] <Tom_itx> order all your stuff from china then
[18:21:15] <Tom_itx> you will get poop that glows in the dark
[18:21:32] <unfy> glow in the dark poop is not "quality".
[18:21:33] <zeeshan> unfy:
[18:21:41] <zeeshan> here take this piece of shit chinese dial indicator from me!
[18:21:42] <zeeshan> :P
[18:23:10] <Tom_itx> zeeshan on that drive you linked me the other day that's mains powered, how do you control the DC output voltage on it?
[18:23:19] <unfy> when i wanna actually make something, i'll use quality stuff .. but for dickin around i prefer poop.
[18:23:23] <georgenz> I have quickly (roughly) run thru the pnc conf wiz. And have jst started linux cnc with the file the wiz made. Want to try and jog motor, but axis selections r greyed out, any clues?
[18:25:07] <zeeshan> press enable amp first
[18:26:18] <georgenz> Ok... emerg stop was active. Thx
[18:58:22] <zeeshan> Tom_itx: the be25a20ac?
[19:01:17] <Tom_itx> zeeshan i'm not sure but probably
[19:02:05] <zeeshan> it wants analog
[19:02:36] <Tom_itx> ?
[19:02:41] <Tom_itx> explain
[19:02:49] <zeeshan> +/- 10 v signal
[19:02:51] <Tom_itx> analog for the DC output voltage control?
[19:03:10] <zeeshan> yea
[19:03:16] <zeeshan> so like for example, 0V on the analog input
[19:03:20] <zeeshan> would output 0V dc motor out
[19:03:21] <Tom_itx> he makes a 7i47 that has an analog out iirc
[19:03:26] <zeeshan> but +10v would be..
[19:03:33] <zeeshan> 190V out
[19:03:44] <Tom_itx> i would need to limit it to 90v
[19:03:51] <zeeshan> thats not too hard i'd think
[19:03:57] <zeeshan> you'd just limit your analog signal
[19:04:11] <Tom_itx> how?
[19:04:27] <zeeshan> im sure you can limit it on th ehal side of things
[19:04:28] <Tom_itx> with a voltage divider? to be sure it doesn't exceed the 90v?
[19:04:46] <Tom_itx> or in software...
[19:04:52] <mozmck> I've played with making gladevcp Led's shiny, and the hal_bars as well: http://postimg.org/image/xqr4nz4d1/
[19:05:04] <Tom_itx> mozmck saw that in devel
[19:05:05] <zeeshan> its a bit of a win/lose situation if you do it in software
[19:05:09] <Tom_itx> good stuff
[19:05:15] <zeeshan> for example you might need to go +/- 5V analg out max
[19:05:18] <zeeshan> but then you lose resolution
[19:05:24] <Tom_itx> zeeshan, i just don't wanna get it if it's not gonna work for my purpose
[19:05:36] <PetefromTn_> hey thats pretty cool!
[19:05:47] <zeeshan> mozmck: send me code!
[19:05:48] <zeeshan> lol
[19:05:49] <zeeshan> that looks awesome
[19:06:22] <mozmck> I'll paste it in a minute. I made the patch against 2.7, and I *think* it will work....
[19:07:05] <zeeshan> Tom_itx: it looks like
[19:07:10] <zeeshan> if you change the reference gain
[19:07:12] <zeeshan> you can limit it that way too
[19:07:18] <zeeshan> there is a pot on it
[19:07:29] <Tom_itx> what's the range on it?
[19:08:12] <zeeshan> factry it is limited to 60V +/-
[19:08:18] <zeeshan> wait
[19:08:22] <zeeshan> i might be confusing that with the tachometer.
[19:08:24] <zeeshan> i dont know
[19:08:30] <Tom_itx> :/
[19:08:31] <zeeshan> i know its doable
[19:08:40] <zeeshan> how i know is because of this
[19:08:47] <zeeshan> i hooked up volt meter to motor out terminals without motor connected
[19:08:54] <zeeshan> then i put drive in test mode
[19:08:59] <zeeshan> then i moved the pot around
[19:09:11] <zeeshan> 10V corresponded to ~190Vdc
[19:09:23] <mozmck> Here's the patch for anyone who wants to try it. http://pastebin.com/1p1kKdbh
[19:09:27] <mozmck> no recompile needed if doing a run in place.
[19:09:46] <zeeshan> i think the easiest way would be to limit in software
[19:10:09] <Tom_itx> i would rather not lose resolutino
[19:10:11] <mozmck> There are properties that have to be set to use the shiny stuff, default is the same as before.
[19:10:20] <Tom_itx> resolution*
[19:10:28] <zeeshan> 4.74V max
[19:10:49] <Tom_itx> yes but if you limit it in software you're gonna limit the res right?
[19:11:03] <zeeshan> resolution will be the same
[19:11:06] <PCW> Is this for a DC spindle motor
[19:11:13] <Tom_itx> for a sherline yes
[19:11:15] <Tom_itx> 90v dc
[19:11:19] <Tom_itx> brush
[19:11:33] <PCW> Ahh do you have 90VDC?
[19:11:35] <Tom_itx> i have the stock control but it lacks reverse
[19:11:46] <Tom_itx> well it's in the stock control from mains
[19:11:56] <Tom_itx> i don't have a separate 90v supply
[19:12:13] <PCW> so no capacitor so no 165V
[19:13:20] <Tom_itx> it might be easier to replace it with a servo
[19:13:33] <Tom_itx> probably cost more too
[19:13:48] <PCW> well... yes
[19:15:16] <PCW> a servo will have a filtered supply and a 4 quadrant drive
[19:16:18] <PCW> the Sherline is probably a SCR phase control or single MOSFET PWM drive
[19:17:26] <Tom_itx> i'm not sure but they probably have a schematic of it somewhere
[19:17:44] <Tom_itx> i could just add a relay to it
[19:18:05] <Tom_itx> i don't wanna blow it with the reverse inrush though
[19:18:43] <Tom_itx> hard to say what it would take
[19:19:46] <Tom_itx> i'm not really wanting to mod that little thing to death... it's not worth it
[19:22:57] <zeeshan> rheostat!
[19:22:58] <zeeshan> :D
[19:26:47] <Tom_itx> they sell a beefed up motor/drive for it but it's $$$ too
[19:34:42] <zeeshan> https://www.youtube.com/watch?v=TC57XMMSRqY
[19:34:45] <zeeshan> nice vid
[19:35:54] <zeeshan> PCW: i have a silly Q
[19:36:15] <zeeshan> if i have a differential load sensor output
[19:36:15] <PCW> I may have a silly A
[19:36:26] <zeeshan> can i use the 7i77 encoder inputs
[19:37:19] <zeeshan> 10V excitation voltage.
[19:37:22] <zeeshan> some are 5v excitation
[19:37:38] <zeeshan> output is 4mV/V
[19:48:42] <mozmck> here is the manual-example.ui I used for the shiny Led's and Hal_bars above. It goes in configs/sim http://pastebin.com/u6fCFsEs
[19:49:20] <mozmck> I also added the following to the manual-example.hal file:
[19:49:20] <mozmck> net vbar gladevcp.hal-vbar1
[19:49:20] <mozmck> sets vbar 90.00
[19:51:48] <PCW> zeeshan: you need a strain gauge amp/ADC for that
[19:52:35] <PCW> bbl Dinner!
[19:54:02] <PetefromTn_> hey guys
[19:54:04] <PetefromTn_> question
[19:54:32] <PetefromTn_> my friend in NZ is trying to setup his machine like mine is.
[19:54:45] <PetefromTn_> he is about ready to power up and is workign thru the pncconf
[19:55:10] <PetefromTn_> he ordered the exact same motors and cards and everything that I have but his Z motor is slightly different
[19:55:32] <PetefromTn_> I would love to be able to tell him to just load my config but that is probably NOT safe at all
[19:56:10] <Tom_L> http://www.soigeneris.com/Document/Gecko/Using_the%20Gecko_G540_VFD_Output.pdf
[19:56:13] <PetefromTn_> how would you guys recommend he proceed with the understanding that he wants to try to use my working configuration as much as possible. is this not really possible or is it doable
[19:56:29] <Tom_L> that might be a feasable way to convert the stock control
[19:56:50] <Tom_L> ignore the 'mach' references pls
[19:57:04] <zeeshan> how dare you post a mach article
[19:57:32] <zeeshan> pete if he has any of his stuff wired backwards
[19:57:33] <zeeshan> like encoder
[19:57:39] <zeeshan> might cause things to run away :P
[19:57:46] <PetefromTn_> its been long enough since I setup the machine that I do not remember
[19:57:48] <zeeshan> has he checked all that stuff
[19:57:49] <PetefromTn_> AGREED
[19:57:59] <PetefromTn_> that is exactly what I am afraid of.
[19:58:09] <zeeshan> he needs to go through pnc conf
[19:58:11] <PetefromTn_> I recommended to him that he work thru the pnc conf
[19:58:12] <zeeshan> and do an open loop test
[19:58:15] <zeeshan> yea
[19:58:21] <zeeshan> once its all doing what he wants it to
[19:58:35] <zeeshan> he needs to compare the values generated by pnc conf
[19:58:35] <PetefromTn_> I cannot remember how we were able to work with one motor at a time...
[19:58:37] <zeeshan> and compare it with yours
[19:59:16] <PetefromTn_> like when you first complete the pncconf did we just unplug the motors that were not working or what? I cannot remember my memory sucks LOL
[20:36:13] <Tom_L> zeeshan what mesa board are you using to control your spindle
[20:36:44] <zeeshan> Tom_L: no mesa for me
[20:36:45] <zeeshan> modbus
[20:36:49] <Tom_L> oh
[20:37:23] <Tom_L> i'm trying to figure if this would work with a 0-10v analog signal
[20:37:27] <Tom_L> seems it would...
[20:38:38] <zeeshan> what would
[20:39:17] <zeeshan> if i were you
[20:39:23] <zeeshan> i'd just try to pick up a cheap hbridge drive
[20:39:34] <zeeshan> ive seen dc motor drives go for like 30 bux on ebay
[20:40:05] <zeeshan> Tom_L: whats your spindle specs
[20:40:06] <zeeshan> 90v
[20:40:08] <zeeshan> what amp
[20:40:22] <Tom_L> low
[20:40:33] <Tom_L> i don't recall off hand
[20:40:39] <zeeshan> like what
[20:40:43] <zeeshan> 700 watt ?
[20:40:47] <Tom_L> less
[20:41:37] <zeeshan> http://www.ebay.ca/itm/Advanced-Motion-Controls-Brushless-PWM-Servo-Amplifier-BE15A8E-P1B17-/291292949719?pt=UK_BOI_Industrial_Automation_Control_ET&hash=item43d269acd7
[20:41:39] <zeeshan> lol ireland
[20:41:52] <zeeshan> http://www.ebay.ca/itm/MCG-BMC-7D-BMC7D-SERVO-BRUSHLESS-AMPLIFIER-DRIVE-BE15A8E-MC1-/361077635594?pt=LH_DefaultDomain_0&hash=item5411e77a0a
[20:43:55] <zeeshan> http://www.a-m-c.com/download/datasheet/be15a8.pdf
[20:44:07] <zeeshan> you already have an encoder
[20:44:15] <zeeshan> you could prolly make it run closed loop :-)
[20:44:52] <Tom_L> requires a dc power supply too
[20:44:58] <zeeshan> oh
[20:45:00] <zeeshan> i thought you had one
[20:45:09] <Tom_L> no this runs off mains
[20:45:38] <zeeshan> just use the be25a20ac
[20:45:46] <Tom_L> i may
[20:45:47] <zeeshan> =P
[20:45:55] <Tom_L> i may explore this first
[20:45:58] <zeeshan> i bet there is still a cheaper alternative
[20:46:05] <zeeshan> you dont need a full out closed loop driver
[20:46:28] <Tom_L> i wonder how big a relay i would need
[20:46:48] <zeeshan> relay for what
[20:46:54] <zeeshan> to kill power to drive?
[20:47:28] <zeeshan> man
[20:47:30] <zeeshan> this scares me a bit
[20:47:35] <zeeshan> theres no be25a20ac on ebay
[20:47:43] <zeeshan> i should probably buy a couple extra just incase
[20:48:01] <Tom_L> for reverse
[20:48:24] <zeeshan> you would just send a negative analog signal to reverse
[20:49:39] <Tom_L> not if i used the stock one
[20:59:41] <zeeshan> https://www.youtube.com/watch?v=5XNSKIzDPtg
[21:11:03] <roycroft> well i went ahead and ordered a power feed for my mill drill today
[21:11:24] <roycroft> my right elbow is really hurting from all the cranking i've done on that thing lately
[21:11:46] <roycroft> i'm ready to flip a switch and turn a dial :)
[21:13:58] <Tom_L> you should just push cycle start
[21:14:22] <roycroft> that would be nice
[21:14:27] <roycroft> and i can do that
[21:14:37] <roycroft> but there is nothing plugged into the back of the linuxcnc machine
[21:14:45] <roycroft> and nothing to plug into the back of it at this point
[21:28:44] <bobo_> zeeshan: Tube support Mc Carr 5694T96
[22:05:07] <CaptHindsight> https://www.youtube.com/watch?x-yt-cl=84503534&v=1Dx1-f8xQio&x-yt-ts=1421914688 Oxford Electric Bell ringing since 1840
[22:54:17] <zeeshan> bobo_: you are always spying on my q's
[22:54:18] <zeeshan> :)
[22:54:45] <Tom_itx> i think i should have gotten the 7i47s instead of the 7i47...
[22:54:52] <zeeshan> whats the diff?
[22:54:58] <Tom_itx> spindle control
[22:55:22] <Tom_itx> 12 input 8 output
[22:55:25] <Tom_itx> and spindle
[22:56:11] <zeeshan> i have a speed board
[22:56:12] <zeeshan> if you want.
[22:56:15] <Tom_itx> it's still in the bag.. i repaired my old one and am using it
[22:56:18] <zeeshan> its collecting dust
[22:56:23] <Tom_itx> what is it?
[22:56:32] <zeeshan> nothing great, lemme check
[22:58:03] <zeeshan> http://www.cnc4pc.com/Store/osc/product_info.php?cPath=25&products_id=58
[22:58:46] <zeeshan> its just one extra bs to add
[23:00:31] <Tom_itx> what do you want for it?
[23:00:42] <zeeshan> where are you located
[23:00:44] <Tom_itx> ks
[23:00:50] <zeeshan> its prolly 10 bux to ship
[23:00:55] <zeeshan> you can have
[23:01:08] <Tom_itx> i'm gonna test the input on this thing as soon as i get the controller ironed out
[23:01:24] <Tom_itx> i'm relatively sure it will work
[23:01:32] <zeeshan> if it doesnt 7i47s!!
[23:01:54] <Tom_itx> yeah well if that doesn't work neither will the 7i47s
[23:02:06] <Tom_itx> i debaited getting it when i got the boards
[23:02:10] <zeeshan> what is exactly the controller
[23:02:15] <Tom_itx> wasn't sure what it was
[23:02:30] <Tom_itx> it's the default sherline control with the pot on it
[23:02:40] <zeeshan> ah
[23:02:44] <Tom_itx> i think it will work
[23:02:53] <Tom_itx> acording to that pdf i posted
[23:03:16] <Tom_itx> your link indicates it will as well
[23:03:36] <Tom_itx> it'd be worth ten bucks just to see
[23:03:58] <zeeshan> im never going to use it
[23:04:07] <zeeshan> i thought i needed it
[23:04:10] <zeeshan> i just ended up using modbus
[23:04:21] <zeeshan> and always will in the future
[23:04:23] <Tom_itx> where are you?
[23:04:24] <zeeshan> or 7i76 or 7i77
[23:04:27] <zeeshan> toronto canada
[23:04:30] <zeeshan> newar there
[23:04:50] <Tom_itx> i can pp if you wanna send it
[23:05:25] <zeeshan> sounds good, i can ship it tomorrow along with something else
[23:05:33] <zeeshan> lemme snap a pic :D
[23:07:10] <Tom_itx> i doubt the sherline supports modbus :D
[23:11:35] <Tom_itx> it uses stepgen instead of pwmgen i see
[23:11:39] <Tom_itx> shouldn't matter
[23:17:13] <Tom_itx> one step closer to rigid tapping :)
[23:17:24] <zeeshan> haha
[23:18:53] <Tom_itx> what's the RJ connector for?
[23:19:29] <zeeshan> these guys use rj45 to make wiring simpler
[23:19:34] <zeeshan> between their boards
[23:19:41] <zeeshan> if youre using their breakout board that is
[23:20:02] <Tom_itx> same signals brought out to the screw terminals?
[23:20:10] <zeeshan> yes
[23:20:27] <Tom_itx> i'll probably use those then
[23:23:07] <Tom_itx> i wonder where they expect you to mount that thing
[23:23:38] <Tom_itx> since the motor goes thru the relay it probably would be best to be near it
[23:24:11] <zeeshan> i wasplanning to keep it inthe enclosure
[23:24:30] <zeeshan> i would say its about the same size
[23:24:33] <zeeshan> as the 7i47
[23:24:34] <zeeshan> a bit smaller
[23:24:45] <Tom_itx> oh in your big enclosure?
[23:24:54] <zeeshan> the old lathe one
[23:24:59] <Tom_itx> i have plenty of stepper wire i can run to the motors
[23:25:11] <Tom_itx> it should be big enough, if not i have some other i can use
[23:25:16] <Tom_itx> 10ga :D
[23:25:32] <Tom_itx> i got a spool of shielded stepper wire
[23:25:40] <Tom_itx> 18ga? iirc
[23:26:49] <zeeshan> gotta find out that spindle motor power :P
[23:27:10] <Tom_itx> i looked it up once, it's not very much at all
[23:29:10] <zeeshan> wichita..
[23:29:14] <zeeshan> i swear ive heard that name before
[23:29:23] <zeeshan> wasn't that the town that got hit by a tornado
[23:29:27] <zeeshan> in the movie twister?
[23:29:31] <Tom_itx> we have lots of them yes
[23:29:42] <Tom_itx> and one of the lcnc fests were here
[23:29:44] <zeeshan> helent hunt;s grandma lived there
[23:29:51] <Tom_itx> could be
[23:29:59] <Tom_itx> google greensurgh ks
[23:30:05] <Tom_itx> that'll give you pause
[23:30:28] <zeeshan> wow
[23:30:30] <zeeshan> just sticks everywhere
[23:30:56] <Tom_itx> the widest one on record
[23:31:00] <Tom_itx> afik
[23:31:15] <Tom_itx> the longest was andover
[23:31:25] <Tom_itx> google haysville or andover tornado
[23:31:26] <zeeshan> have you seen one in real life?
[23:31:31] <Tom_itx> yeah
[23:32:02] <zeeshan> i want to see one
[23:32:05] <zeeshan> obviously not hitting houses
[23:32:07] <zeeshan> just in the fields
[23:32:15] <zeeshan> http://0.static.wix.com/media/2f0804_f1163789015d7a303bb2a8f88087eee1.jpg_1024
[23:32:21] <zeeshan> something about the wall cloud formation..
[23:32:52] <zeeshan> need a linuxcnc weather tracking system
[23:33:00] <zeeshan> closed loop