and I'm applying it now
03jmkasunich 07HEAD * 10emc2/src/emc/motion/motion.c: merged MODULE_PARAM patch from acemi
03jmkasunich 07HEAD * 10emc2/src/emc/usr_intf/axis/scripts/comp.g: merged MODULE_PARAM patch from acemi
03jmkasunich 07HEAD * 10emc2/src/hal/classicladder/module_rt.c: merged MODULE_PARAM patch from acemi
03jmkasunich 07HEAD * 10emc2/src/hal/components/ (14 files): merged MODULE_PARAM patch from acemi
03jmkasunich 07HEAD * 10emc2/src/hal/drivers/ (8 files): merged MODULE_PARAM patch from acemi
03jmkasunich 07HEAD * 10emc2/src/rtapi/rtl_rtapi.c: merged MODULE_PARAM patch from acemi
I'm looking at the http://jraco.com/
has anyone tried the EMC package with that?
I've gone through the forums and not found an obviouis (to me) answer
galil style stuff is not really emc friendly
ahhh - galil is the type of controller?
I don't understand it fully myself, but I the the card _is_ the motion controller, rather than just providing I/O for a software motion controller like EMC
Ok - I'm gonna try to get my head around this... ;)
What are the more popular (and less expensive) models?
the PCI card seems like a galil servo controller
motenc, mesa 5i20, ppmc
motenc is analog servo
mesa is analog servo
cool, I'm extremely new to this
I've got a ton of 3d terrain maps I would like to carve out
ppmc has several flavors, many intended for steppers or step/dir servos like the gecko 320
do you have a machine? or are you thinking of buying one? or building one?
there are so many variables
I'm trying to either buy or build
wood or metal, nothing larger than 10-12 inches
ideally under 2000
not sure if that's reasonable or not?
cutting 4x4x2" wood, and 12" x 12" x 8" steel, are a couple orders of magnitude apart
what's the entry level on cutting 10"x5"x3" (all numbers approximate) of steel
I'm really amazedd to see a user group like this
sherline mills can do wood and metal about 8" x 4" x 4" (approx)
in metal the cuts are light
but you can pick the mill up with one hand
the chinese "mini-mill" is about that size i think
the minimill is about 150 lbs, can take heavier cuts
next step up from that is a mill-drill, about 500 lbs
then a knee mill at 2000lbs
150 lbs sounds appropriate for a total amateur
i don't want to get totally out of my league
if you only want to do wood, then you can consider routers for larger workpieces without huge weight
you should get something bigger than you expect to need
they aren't rigid enough for cutting much metal though
u got it. i really would like to be able to work with light metals if possible
getting some urls in a sec
hmmmm. the sherline's aren't rigid enough?
[01:44:50] <jmkasunich> http://www.sherline.com/8540pg.htm
sherlines are very nice, but very small
and expensive :P
you can cut steel with them, but slowly
yeah, they are top dollar
so what sorts of projects are ya'll doin?
some mini-mill info:
[01:46:10] <jmkasunich> http://www.mini-lathe.com/Mini_mill/Main/mini-mill.htm
wondering why my microcontroller isnt working
[01:47:33] <jmkasunich> http://www.grizzly.com/products/G8689
about $600, before conversion to CNC
the conversion can be as simple as putting a couple surplus motors on it, or you can go all out and put ballscrews in
the latter will take a lot of machining skill, and probably close to $1000 in materials unless you are good at scrounging and shopping
wow, it has smaller travel than I thought
what do ballscrews do?
7.4 x 4 x 9 travel (9" vertical)
lower friction and backlash, for more accuracy and less wear
9" vertical eh
so you can switch from an short end mill in a collet to a long drill bit in a chuck
dovetail column small mill-drill
15.8 x 5.7 x 14 travel
says $1014.25 right there
I looked at the base price without freight
I actually expected freight to be more)
i wish they'd make a mini van-norman
that seems nice - especially since it weighs 372 lbs...
the smallest I know of is the #6
around 1200 lbs
i just mean something with a ram head that swivels
that's a bit more than a desktop piece
the van norman? yes, its a knee mill
my #12 van norman is 1200 lbs
no, 1800 lbs
what about the taig mills?
no firsthand experiance with them
but my understanding is that they are in the same class as sherline as far as size and capabilities
van norman (just so you know ;-) http://home.att.net/~JEKasunich/vannorman/VN_Home.htm
* jmkasunich is drooling slightly at that small dovetail column milldrill
go fix the one you've got
the shoptask is a nice lathe, and I will be CNC'ing it
but the mill part sucks
how about the Van Norman?
rigidity is limited, but the real problem is Z travel
3" quill, no knee or head travel
the van norman isn't a CNC candidate
that thing is amazing (vn #12)
where on earth did you get that?
(not that I hould talk - I've had the BP for ~2 years and haven't put the motors on yet ;) )
used machinery dealer
should, not houls
it was made in 1941
that's a museum piece
the VN will hog metal like there's no tomorrow, but its not the best for fine work
spindle speeds are slow, and the screws have more lash then I'd like
it can rip some steel though
mostly I cut aluminum, but I've done steel too
3/8" wide keyways in 2" diameter stainless shafts in one pass
smaller pieces with high detail would be better for me
thats in horizontal mode right?
I don't have a shop for anything large like that
fenn: yeah with a keyway cutter on the arbor
[02:00:06] <jmkasunich> http://www.metalworking.com/dropbox/_2001_retired_files/Facemil3.jpg
[02:00:15] <jmkasunich> http://www.metalworking.com/dropbox/_2001_retired_files/Facemil4.jpg
first pic is cleaning up the edges of a stack of 6 3/4" thick plates at once
one pass, about 0.100 deep
(I've made similar cuts 0.3" deep
the second one is 1" wide x 5/8" deep in one pass
you are right that its not a fine detail mill
its great for taking saw cut parts and cleaning them up, bringing them to size and square, etc
that's an interesting use - so you make blades with this machine?
those flat plates were part of a test jig that I made for a lab
what made you think of blades?
i thought you were talking about carving a saw our of a piece of metal....
"saw-cut" parts mean the pieces were cut from a large plate or bar with a band saw
so the cuts are rough, maybe curve a little, and not square or parallel
the mill produces a smooth and accurate flat surface
i'm going through the archives on taif - looks like a few folks have used the emc with them
- i've got a lot of VRML files that i can convert to dxf dxw and mill
do you know of the CNC toolkit?
there's a yahoo group, called CNC_Toolkit
is that part of linuxcnc plus ubuntu?
nope, and unfortunately, GMax and the toolkit only work on Windows
[02:17:04] <SWPadnos> http://www.rainnea.com/cnc
he's thinking of making it into a plug-in for Rhino
that's very impressive -
where do you get a five degree cnc machine?
you either spend a _very_ large amount of money, or you build it yourself
you either spend a very large sum of money, or you build a 2-axis head for a 3-axis mill ;)
what he said
there are a couple of guys who make DIY/hobby level 5-axis upgrade kits for small mills
hmmmm, yup there's a dandy one on ebay for a mere 98K
oh, that's not bad
Rab makes some nice jewelry with his mill and software
yup, it's good, keep me dreamin for a while
that small dovetail mill is pretty neat
(been reading the manual)
here's a concept I've been trying to grasp:
finish one project before starting another
I'm not sure I get it yet :)
but it may apply here
of course, I've still been pondering the CHNC for sale about 5 miles from me
but... knowing this thing is out there will keep me from spending a bazillion hours trying to make the shoptask into a better mill
I'm not sure that will be better than a reasonably good shoptask
14" Z travel vs 3" Z travel
end of story
the table/saddle/base ways are probalby not _quite_ as rigid as the shoptask
the head might be more rigid because its not sticking way out
you have one of the older shoptasks, before the risers on the column?
yeah - those have a usable Z envelope of about 1", it seems
once you get clamps and stuff in there
I haven't milled anything on it in a couple years
I use the lathe part all the time
I finally figured out how they do the Z drive on that thing
theres no slot in the face of the column for access to the screw
they have pieces that screw to each side of the head and extend behind the column
then a bridge connects them and carries the nut
on the Grizzly?
the column is open on the back
that sounds like binding waiting to happen ...
I'm not so sure
the alternative is putting a big slot in the front of the column (distance between screw and head CG remains the same, only the nut attachment changes) or mounting the screw in front of the column (distance between CG and screw is smaller for less binding)
the latter cuts into the throat dimension
and both expose the screw to crud
I guess they just need a very large slide area, but keeping that vertical surface properly lubed should be a challenge
way lube is sticky
its no different than lubing the knee ways on a bridgeport or van norman
except for the much more common one-shot lube systems
but anyway - I don't know much about machine building - it just seemed that it would be similar to the racking problems people talk about on large gantries
its a shame you can't get just the castings
I have this weird picture in mind: two of those columns, one at each end of my shoptask. No head, just the dovetail plate that slides on the column
connected by a bridge of maybe 4" square x 3/8 wall steel tube
and a spindle in the middle
heh - a grizzly/shoptask gantry
I have all kinds of ideas running thru my head to fix the shoptask Z problem
I think you need more sleep ;)
I've been thinking about it for a couple years, not just today
maybe drugs are in order then :)
dovetails, ball bearing slides and rails (like some of the ones that were on sale at the cnc workshop)
lots of different ideas
all of them involving _some_ kind of support at the tailstock end
the extra support and the Z travel would totally transform the shoptask for milling
I think you're right - I need to sleep
and everyone - bedtime for me too
fenn: live cad dvd image http://www.caelinux.com
blender qcad g3cad plus...
good morning all
I am setting up a router with 3mm pitch X axis
and 400 steps stepper
It seems that emc switch back to mm units at start up
i set units to 3
and input scale to 400
pier_gar: you cant set units to 3 ... its not allowed as far as I know .. its either 1 or 0.0393939320202 or somehting ...
and if you dont get that number exactly right, it flops back to mm
I really should tinker with my CNC mill, and get it running smoothly.
A-L-P-H-A: yeah :)
my mill has almost a y axis :)
need to facemill one flange, and drill 2 holes..
Hmmm, ray not around. Was going to suggest ISDN to him.
Just looking for a home and job
Heh, a google ad --> Connect For Less! Get Low Low
Prices on Isdn Here
that sounds kind of horrid
home and job..
* Jymmm sighs*
Well, what happened is the owner of the bldg died resently and we've been the resident managers here for 18 years. Now they want to sell the bldg and basically said "get out" so they can prep the unit for the sale.
AS you know, I'm running everything out of the apartment here, and had budgeted everythign based on out discounted rent. Never seen a business play that had a detah contigency.
So, I've basically had to shut down everything and pack 18 years worth of stuff and looking for a new place.
The biggest problem is that about 90% of the places out there are "no pets" and we have 21 birds that are like our children.
But, since I dont' know if I'll find the right place, and the almost trippled rent we'll be paying, gotta find a job as well.
really rough :/
We've already had two places where we didn't get the place (we were 2nd choice). Looked and an older 2br/1ba yesterday... awesoem little home, would be PERFECT as for an additional $50/mo I'll get the garage too.
that'd be nice
That's IF we get the place.
having a separate shop rocks
Shop, or just storage.
where will you keep your router?
Most places here are around 900sf
Well, if I can set it up... in the garage or bedroom. If I can't set it up, the closet packed.
It's disassembled right now =( (maybe I was a lil premature in that move though)
I had one job prospect... 4hr phone interview, 2hr in-person interview, but I think they just didn't want to pay the salary I was asking. Not that it wasn't in-line, below market value, but that they were being cheap.
* anonimasu nods
Hell, I didn't care if I had to put in 60+ hours a week, but I have to be able to afford the job.
there was 10% domestic/international travel too.
So, now I'm looking at T/S Job in a COLO ISP for $15/hr 1900-0300, I figure that I can do that and IF I can get the business back up I might be ok for a while.
fun stuff, huh =)
now we're having some fun ... anyone got any great ideas on high power magnetisers?
what are you magnitizing?
you know that flexible magentic rubber strip?
seems to have quite high coercivity though
need to erase it first and then re-magnetise it
so far, its put up a good fight
robin_sz: do you know how strong of a field is needed?
the jmkasunich not yet ... all I know is "stronger than weve managed so far " :) ...
so you don't have any technical info
what have you tried to far?
erasing is probably harder than simply re-magnetizing to the new pattern
or do you need to erase, perform some operation that would be messy if it was magnetised, then magnetize afterwards
update ... got it to magnetise now ... 10,000uf at 300V .. discharcged into 20 turns of thick copper on some transformer laminations and a very small gap
the magnetic material we print on - has changes poles every 1/4 inch or so.
what are you using to switch the discharge?
umm ... well, if you call touching a big bit of copper wire onto the cap "a switch" .. yes
my mate says his ears are still ringing :)
heh, you are gonna have a problem printing 2mm stripes onto 3m of tape that way
jmkasunich: I think I corrected a small pb in stepgen which caused my out of estop glitch.
what did you find?
At hte end of the test for disabled stepgen (line 74é) the "break" should be a "continue"
sorry, line 742
robin_sz: sounds like a small rail gun I had made in high school :)
MichelG: you are exactly right
That caused me 0.05 mm error at each estop. I am beginning to understand the code a little bit more...
And I adimre it!
it would have become very obvious if somebody disabled one stepgen and tried to have the others keep running
The funny thing is: I was trying to estop if my probe trips when I was doing non probing moves, and I did my tests with the Y axis.
MichelG: I think I might have made the same mistake at line 542
03jmkasunich 07HEAD * 10emc2/src/hal/components/stepgen.c: fixed a thinko that was spotted my MichelG
dammit, I hate it when I make a typo in a commit message
Both of us have fat fingers :-)
I bet the same bug exists in freqgen...
* jmkasunich checks
freqgen doesn't have an enable pin, so no bug
I am happy now, as my mill works fully OK now.
thanks again for finding that
I am more than happy to give back a little for all I got!
But I spent about 10 hours before finding that glitch. (learned the code too :-) )
yay, a mystery bug solved!
jmkasunich: you can edit the log message if you want to fix the typo
03jmkasunich 07v2_0_branch * 10emc2/src/hal/components/stepgen.c: fixed a thinko that was spotted by MichelG (backport from head)
cvs admin -m1.37:"replacement message" file.c
but I already fixed it for you to make sure :-)
cvs admin =~ rcs
the rcs command, I mean
so all the things you can mess up with rcs, you can also mess up with cvs admin
jmkasunich: still there?