lerman_ is now known as lerman
[00:18:50] <cradek> http://timeguy.com/cradek-files/emc/thread-done.jpg
[00:18:54] <cradek> http://timeguy.com/cradek-files/emc/thread-check.jpg
[00:18:58] <cradek> http://timeguy.com/cradek-files/emc/thread-cutting.jpg
... the second thread cut with emc2's new lathe code
jmkasunich: back home?
you been a busy fellow!
ok, what have you heard, it's not true
not just heard... I got pictures
of threading ;-)
that second one looks pretty good doesn't it
at first I just couldn't figure out why the passes wouldn't line up
... then I tightened the set screw on the encoder
I always forget to check the obvious things first
other than the the long shaft and top-of-motor mount worked out OK?
what did you do to hold the drawbar in?
it's a bit crappy but it works
you should post a pic of the overall setup
I chopped off a bogus tool holder I had
I can do that, just a minute
BTW, very nice macrophotography on the thread pics
thanks, I worked hard on them
cradek i'm impressed
I bet its neat to watch it thread
[00:42:03] <cradek> http://timeguy.com/cradek-files/emc/lathe-setup.jpg
that bench is just too clean
whats holding the plate to the top of the motor?
that's a huge motor
it's a sherline motor with closed-loop speed control
it's really quite nice for the price
heh jmk you probably eat motors like that for breakfast huh
what is it, about 1/8HP?
it doesn't say: "90 V DC motor" is all it says
my POS shoptask is 3/4HP, the Van Norman is 1-1/2HP
I'm off to dinner - be back in an hour or so
I want to replace the shoptask motor with a three phase one and add a VFD
anybody know what development tools are needed to do FPGA design for a m5i20 card? are there free versions?
steves_logging is now known as steve_stallings
crap, still no cvs
jmkasunich: the sherline motor is apparently 1/3 HP
at what speed? bet its very high
[01:48:55] <cradek> http://www.sherline.com/dimen.htm
you would be surprised at the power it has at extremely low speed like I was using today
a different set of pulleys would make it really strong
not enough to cut a 3/8-16 thread tho
I dunno, it got pretty far
yeah, the real answer to low speed torque will always be mechanical, not electrical
the whole machine may not be stout enough to finish that thread, no matter what's running the spindle
guess I should have cut 3/8-40 or something
in the email you said "my spindle gives out"...
what does that mean? it stalled?
but I was hoping to get a nut on it
yes, for the last several passes I was helping it turn.
0.0005 is as small as you can go on the infeed?
I have a scale of 6400 but those are half steps
might also want to include spring cuts - passes made with no infeed at all
so .0003125 is probably the practical minimum
I bet a spring cut will still remove a chip
yes, I should definitely do that
harder to do with an O loop unless I just do each cut twice
unneeded in the early passes, but what the heck, its a CNC...
its not like you have to stand there turning the crank ;-)
I wonder if the canned cycle should use shallower passes as it gets further in
I doubt that's standard, but it seems like it might be useful
I don't know much about canned cycles
I was even thinking of a cycle that is just one pass (infeed, cut, outfeet, return to start)
I don't either, but we could make all of them we want
and leave the number and depth of passes to the user
Funny you should mention a hand crank, the Sherline threading kit includes just that!
steve_stallings: oh tell me about it
steve_stallings: I've cut threads in stainless with that abomination
unless you have everything set up perfectly you'll have to test fit anyway
steve_stallings: I needed a left-hand metric thread and all I had was a sherline - how else am I going to get it?
I should think that cutting any material that work hardens would be foolhardy on a Sherline.
I got a working part for just the cost of a few tools
what kind of stainless?
trust me I looked for left-hand metric dies first, but I doubt there are any in the whole US
jmkasunich: umm, the silver shiny kind
I bet it wasn't 316
really no idea
316 work hardens on each pass, and the next pass needs to be deep enough to get under the work hardened layer from the previous pass
a sherline simply isn't rigid enough to cut that deep
I was once drilling some 5/16" or so holes in 1/8" thick 316SS sheet to make a boat part
if you pressed like hell (drill press) it would do OK
but on one hole I let up for just a split second, and the drill was no longer cutting under the work hardened layer...
as soon as I pressed down again, the end of the drill bit got red and crumbled
sounds really hard to recover from that
I recovered by getting a new piece of steel and a new drill bit
fortunately the part was simple, 1" wide, 3" long, rounded ends and 2 holes
it would have really sucked if I had several hours in it
cradek: they must be using sears HP
0.06kW != 1/3HP, its less than 1/10!
jmkasunich: I made /compile_farm point to the one in your home directory
now it says 03/12, can you update it now?
I should be able to
but I don't have anything to put on this box
I don't understand
I need to change the farm slots to use my account and pw when they ftp results
this box is my working machine, not a farm machine, it doesn't have a more current copy of index.html or anything else that I would want to put up on the server
ok, I just assumed you would have to fix the farm itself
I either have to fix the farm to use my account, or have SWP give the farm its own account
I'd prefer the later, but the former works
since you were able to redirect to my account, I'll do that
I assume he meant for you to use the jmkasunich account, I think otherwise there's no purpose for it
there's no cradek account, so he didn't make them for all of us
you'll have to copy over an ssh key and stuff I assume
the day he set it up we were talking about compile farm mark II, with some server side stuff to make it nicer
oh wait, you use ftp
while you're at it, you should fix your scripts to use scp
too much like work
when I get the new (qemu based) farm going I'll look into that
speaking of which, they were scrapping another of those LPr servers
I got another 256M of ram
a couple spare 18G disks
now I basically have one complete system worth of spares
(except for CPUs)
CPU's don't die anyway, at least not very often
probably power supplies and disks are the most likely things to bite the dust
that's my experience too
with power supplies slightly worse than disks
in the box with the server they were scrapping was a matching disk array - 12x18G in the hot plug carriers
but so fscking heavy!!!
my mill's machine has those hotplug drives
it's kind of nice as I can swap in and out different OS disks
I have 4 disks I think
the disks occupied the entire face of the unit (3U high?), but of course only about 7" deep... yet the box was 24" deep (and not empty)
dual 500W power supplies and two huge blowers (not fans, blowers!)
I bet it was at least 75 lbs
that's not going to be real quiet...
I wound up just grabbing 3 of the disks and leaving the rest
is your hot-plug stuff HP?
I would have sure grabbed all the 18G disks
I can grab the rest tomorrow if you want them
I don't think so, but there's a semi-standard plug on the disks I think
the plug, yes
I'd like a couple if they're the right plug
I don't use mine as hotplug, I just turn it off and change disks
the carriers tho... they slide in and latch into the cage, and there are some lite pipes that line up with power and activity lights on the backplane, etc
someday I need to make carriers/rails that fit though
right, that's exactly what I have
well I'm sure they're all different :-/
but same idea
gray with a lever and a narrow blue thing you push to unlatch it?
I'm not sure, since my machine didn't come with any of them
oh, you have neither carriers nor cage?
well the front of the machine has a sort of cage
in the back is those standardish connectors
I see, but you don't have the carriers
but I don't have rails/carriers that work, only the blank fillers
so I rigged it to get it working
googling for a pic of what I have
it probably wouldn't help...
I'm installing ubuntu in qemu for fun
I'm curious how long a compile will take in it
[02:27:07] <jmkasunich> http://www.econram.com/d9419a3610rp.html
do your blank panels look like that?
no, but the rail on the side is believable
the blanks may be totally different from the real ones (they don't latch in)
well, I'll bring disks and carriers, you can use them or just remove and use the disks
I appreciate that
that pic is 34G, but still fits the LPr server... I wonder if bigger ones are on ebay
since I only have 2 drives, it would be nice if they were big
you have plenty of room though, don't you?
scsi disks this big are still not common/junk
[02:30:27] <jmkasunich> http://cgi.ebay.com/Lot-of-2-HP-NetServer-LPr-5064-3541-18GB-Drive-Tray-NEW_W0QQitemZ8786622952QQcategoryZ39974QQrdZ1QQcmdZViewItem
better pic of the trays
I have 30G of /home
yes those might work, hard to say for sure
in which I want to set up multiple virtual machines
even at 4G each, that's a lot of virtual machines
I want a lot
bdi-2, tng, 4.20, 4.38, ubuntu 5.10, ubuntu 6.4 when it comes out, etc, etc
[02:33:00] <jmkasunich> http://cgi.ebay.com/HP-NetServer-LPr-Dual-PIII-600-256MB-2-9-1GB-2U-Mnt_W0QQitemZ9705119896QQcategoryZ73325QQrdZ1QQcmdZViewItem
thats the server
my qemu is using 150MB of ram just installing ubuntu
I hope you made enough swap
you might use plenty of it
cool, that's a small machine
/ is 3G on sda, swap is 3G on sdb, the remaining 15G on each disk is merged into a striped LV and used for /home
steve_stallings is now known as steves_logging
theres one on ebay with dual 800MHz cpus and 1G ram.....
that would even make a nice desktop
need a deep desk
they're not tall, but they are deep
well I'd put it next to the desk
you know what I mean
you mean a box to use instead of a server
so now that you're back, what should we do next with emc?
yeah, but that's boring
I won't feel free to do non-boring things until the release is done
and several other things are done, like the new farm working, etc
I wanted to make the TESTING packages tonight, but there's no cvs
I think that's the next step toward a release
I should get the new farm out, put the new ram in it, and start setting things up
actually, before I do that and before jepler goes away, I should put that new make on slot 2 and see if it builds
I still think that borders on silly, but I don't object
how is threading?
skunkworks: did you see the last set of photos?
did you see the latest email/photos?
did you post them here?
I will look.
I can paste the URLs if you don't have the mail, I didn't mean to be difficult
very nice. Great work
Just looked back at logger_aj
aren't you on the emc-devel list?
I can look on sourceforge - but usually there is a delay.
no just the user list
I didn't cc -users, maybe I should have
if you cc users, make a BIG note that its still experimental
* fenn is a fan of "release early, release often"
* fenn is also a fan of cutting parts out of air first
threaded air isn't nearly as impressive
skunkworks has changed the topic to: you
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woops - what did I just do?
cradek: in g33, the k- value gives the distance XYZ moves per spindle revolution?
skunkworks: nothing that ChanServ didn't correct
jepler: currently, yes
jepler: some systems use F for that, which seems more appropriate to me
(since you can move in any direction)
that thought has crossed my mind too
jmkasunich: ever seen a hilsch vortex tube?
are those the ones with a Maxwell's demon trapped inside?
or a plasma cutter
in fact, if I had cvs, maybe I'd go ahead and change that
cvs down again?
skunkworks: yeah, developer cvs is busted
made one a long time ago, it worked, but not well (I was in my teens and had very limited metalworking skills/equipment)
hm it's taking a long time to save this wiki page
there, it finally saved
[03:10:52] <jepler> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?SpindleSynchronizedMotion
maybe I should make the image a bit smaller
is the lathe code in the recent TESTING?
ok time for bed. Good work.
see you skunkworks
friday finaly :)
jepler: yes, the code was already working a while ago - I haven't changed it recently
I've noted that on the wiki page too
cool, thanks for doing that
i like how the maxnc makes a pretty blue splotch in the background
hmm, the mitsu version of G33 has a shaft angle, that would make multi-start easy
I'm surprised by how good that photo turned out, I usually suck at that
jmkasunich: another spec I read said for multi-start, you have to figure out the Z offset yourself
not like it's hard - you just offset one F/K value in Z
err half of one, I guess
something like that
there might possibly be a case where you couldnt do that
like a three jaw chuck for example
well you could start from the outside?
but that's academic at this point
but yeah I agree in general there might be trouble cases
it would be easy to add offset, except canon would have to change again.
that's more a problem for axis than for emc
yeah, it's just a minor problem.
what do you guys think about displaying other info on the axis backplot, like r/p/w rotation
or does the cone already do that?
fenn: I'm not opposed to it
or M codes
what M codes do you mean?
M1xx codes are shown with a dwell-like signal
all of them i guess
for a lathe, having the Z axis always be up is awkward... we may have to add some flexibility.
you guys with this neat hardware need to code it
for now you're lucky you have 3 dimensions in axis
my sideways lathe is particularly bad - when the cone goes up, the "tool" goes down
cradek: you need to turn the cone into a cylinder
jmkasunich: if we somehow had the tool shape, a lathe is so simple that it might be possible to model the work somewhat...
but that's a project for another day
having the tool shape is also needed for lathe tool offsets
offsets are where I start having no clue what to do
(and I have little interest in anything that would make me work in the interp)
if(code IS_IN interp) work_on_it SET_TO dont_wanna;
you mentioned in your post to the list that we might want to improve the HAL interface to the encoder
I agree, that inverter needs to go away
if I wasn't up to my elbows in this server I'd talk about it now
I don't even understand its purpose
we can do it anytime
also there's the rpm issue still to be fixed
this chassis is actually pretty nice, you can remove/replace the mobo almost easily
as long as you don't trap that skinny little wire harness in the edge card connector and cut it in half, like I did
fortunately I have a spare of the harness too
not anymore you don't
(only two wires, carries power to a SCSI repeater board)
I could repair with solder and heatshrink if needed
(I'll have another spare tomorrow... the third server is still in the dumpster ;-)
(and another spare mobo too)
another dual 800? that's still a nice machine
I had a dual 600 and single 400
and the one in the dumpster is a single 500
all have 2 CPU slots
you have to add the CPU and a power supply module (switching regulator for the CPU core voltage)
the dual 800 was the one on ebay
single 500 is bordering on not-worth-picking-up unless it's a complete machine
its a parts machine to keep this one working
I won't haul the whole thing home
* jmkasunich is not happy
after the mobo switch, I get blinking lights on the mobo
too many toys, not enough time
(4 lights, one per DIMM slot, that light up when a dimm is installed and happy)
now they're blinking, 2 on and 2 off, alternating
and I have no magic decoder ring
you need to re-fluster the transcombobulator
[04:05:12] <fenn> http://video.google.com/videoplay?docid=5125780462773187994&q=retro+encabulator
me thinks I need to change back to the original mobo, and hope it still works
oh you dont have sound
* jmkasunich holds breath, flips switch
pheww.... lights look OK
duh.. the 2nd board is only labeled for up to 550MHz, not 600
even tho both are otherwise identical
(the 600MHz one has a sticker over the silkscreened markings, with the additional dip switch settings for 600MHz)
of course, I notice this _after_ I've already swapped back to the other one
did you see the videos of that lathe I posted last night?
no I didnt
pfctl: unknown option -- l
[06:54:03] <anonimasu> http://video.google.com/videoplay?docid=1130195085869242029&pl=true
another one ;)
if you find the right onw it'll blow your mind away
brb going to work
[07:18:31] <Jymmm> http://video.google.com/videoplay?docid=-3025238628683391433&pl=true
[07:31:30] <Jymmm> http://video.google.com/videoplay?docid=1855769711153176498&pl=true
trying to get a nwe lib for the plc..
from the manufacturer..
I think the net just died
or well a bit
it dies, I broke the string
* anonimasu sighs
what a mess
my connection is dead..
did you notice they run dry in the tsugamai videos
Yeah, but just for recording the videos, I saw coolant leaking a bit.
true, still impressive
I pasted a video of a machine where they forgot coolant..
it kind of went frrp and the tooling died :)
primary reason why I dont do metal
[08:44:13] <anonimasu> http://video.google.com/videoplay?docid=-2694766710211797290&q=cnc&pl=true
I crave for a cnc lathe D:
I love the videos of turning the chess piece in brass...
on the centroid page
sigh --> http://search.ebay.com/7230960799
jepler, you there???
tfmacz: I'm back now
have anyone of you guys got a clue about making silicone molds?
I make mould in the kitchen occasionally.
hm.. crap :/
I've got a nice little part for my bookhelve I'd like to cast..
I've got epoxy and stuff somewhere..
need it to get more shelves up
I wonder if I have some RTV at home
anonimasu dont forget the mold release
Jymmm: rtv dosent adhere to other stuff then itself
ROTFLMAO.... wanna bet?
atleast not the moldmaking stuff..
I use RTV to adhere everything to everything
I'll machine a mold of something tomorrow..
anonimasu: Well... poor man's mold release for silicon: vaseline and acetone, about 1:2 to 1:3 ratio
acetone, xylene, or whatever you have on hand.
I can make a 2 part mold with some work.. :)
no big deal..
or I can find other parts..
parts/other thingies like what I need
[19:40:01] <Jymmm> http://www.google.com/search?q=rtv+mold+release&sa=Search+Google
I have real mold release for fibreglass..
I'm not sure it's the same, but couldn't hurt.
oh, for the final mold..
making theese things out of epoxy..
or whatever you call it..
ok, cool. just wanted to to remind you is all.
if I had some rtv i'd use it but I dont
very easy part to create
if I even bother
CNC graffiti? http://www.makezine.com/blog/archive/2006/03/hektor_the_spray_painting_robo.html
Through the use of Scriptographer, Hektor is controlled directly from within Adobe Illustrator,"
surely he meant truetype-tracer and emc
jepler: it has a lot of unnecessary movement
Yeah, I'm looking at "beautiful place" and I'm included to agree
it also must not be all that fast
no, seems really slow
I wonder what all the extra motion is about
does it always start from the same direction?
jepler: that's an older project, I remember seeing it while I was documenting for my tripod
alex_joni: do you understand why it has all the extra motion?
* alex_joni can't find the movie
it enters tangent to the curve it's drawing
and it has to stop and re-enter when an edge is too sharp
it must have really low accel, you get an idea what it is from seeing the size of the circles
oh, maybe that's to keep it from swinging around (flexing the cables)
yup, it's not such a big weight
and even with weight to keep them streched, you'd have inertia
it's still a very neat hack
[20:08:02] <alex_joni> http://video.google.com/videoplay?docid=-283528724322180681&pl=true
that's an improved version ;)
not very portable though
in Graffiti-Alphabet you can see the homing
cradek: Beautifull place shows lots of insight stuff
homing too, and also why it needs those extra motions
I think it always wants to stay at speed
so it plans those circular G0's to keep the speed as constant as possible
havent watched the movies but a lot of HSM cam software does this
litle loopies after every corner
fenn: this is small speed ;) but very shaky
so I think this minimizes wobbling & such
that should place less wear on the machine aswell
as you dont have to suddenly accelerate x kg of table/turret to 1g to make it..
crap.. I overfilled my bathtub almost
* alex_joni passes anonimasu one of those inflating boats
(yes I know it is getting old)
just bought it
was out shopping some food, and I thought I'd buy it
what do the litle mini dials do?
very neat clock
fenn: it's a cronograph
the one at 6 o' clock counts the seconds (normal time)
ah so you press a button and they measure the time elapsed
the top-left measures minutes, top right measures 1/20th seconds
that's not SI :P
[20:42:52] <alex_joni> http://www.wapop.co.kr/bemarket/goods/972_imgl1
<- slightly better picture
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