theorb is now known as theorbtwo
cradek: any pointers on which oil i should be using?
i'd hate for the machine to seize up again after i've got it running
it's likely it won't see very frequent use
oh you got it moving ?
no not yet, it's in the middle of the night here, but i'll be at it in the morning
can you pump the lube pump a few times every week?
I bet nothing will sit for months/years and not goop up
i guess i can throw a timer on it so it'll run automatically once a day or something
that would be best - but you'd have to watch the level - you sure as heck don't want to pump air in
it has a level sensor already
but do check all your metering valves once you get it going - I guarantee half of them are plugged solid
i'll have to find/fix the leak also, i expended 3 liters of oil in a few hours
oh - if there's any leak before the metering nozzles, they won't let a drop through - it takes fairly high pressure
sounds like that's your main problem
yeah, the pump actually toggles a output saying it can't reach operating pressure
if the leak is small it'll pump through the leak in preference to the port
assuming it reaches pressure
If your wanting to preserve it then you could look at greases and the like
but you would have to clean it all off before using it
Valen: You mentioned that you have a source of cheap second hand robot ?
OK sorry. I thought it was you :-)
Are you in Aussie ?
My mistake it was Robin.
Howard: did you get your configuration issue straightened ont?
those onsrud cutters are pretty expensive
general machining question: I want to true up a piece of steel that was flame cut. So its kind of hard where it was cut. I am using a 2 in dia face mill - 4 inserts. I just need to take off about .030" I want to machine it dry. I tried 500 RPM and 3.8 in/min. chips are orange/white hot. Is this really bad? should I use lower RPM?
that is 250 sfm which seems fine for carbide
yes but are white hot chips generaly OK?
it might just be super hard - can you anneal it?
no, that doesn't seem right to me either
i tend to clean it up with angle grinder or belt sander , way cheaper than cutters or inserts
It is not super hard I can cut it with a file but it is hard
angle grinder will sure do it
that will be alot of work. The flame cut was with a machine and is 2in wide. It is a really good flame cut and almost looks like a saw cut
yeah i chewed up a few cutters before deciding no flame/plasma cut pieces without pre cleaning the edge
we normally grind off the surface layer of flame cut stuff
its way harder than the base steel
but we use some fairly tough steels
I think I'd try a much cheaper (hss) cutter and very slow speed and flood coolant and let it grind away
no way would I risk four $30 inserts
(if it's a one-off anyway)
you can machine it aparently, but you need to look up the specs on the hardened state of the steel
ceramic inserts would work ;-> they are sposed to make white hot chips
Thanks for the advice. Of course I am just a HSM so The steel is used and so is the face mill. I think it is just mild steel. Its from a piece that was 2 X 7 X 50"
maybe your inserts are dull (or they are now)
any paticular reason not to use the coolant?
coolant on carbide would make it worse wouldn't it?
I didn't want to mess with it tonight (the coolent) and I though a 2 in mill would throw it all over my shop
can you try 3/8 or 1/2 hss and flood coolant? 40-50 sfm?
I was under the impression carbide liked cooling
needs lots of it though
I think it likes heat, and hates thermal shock
partially cooling it causes issues
ceramic likes/needs heat
it works by heating it to red hot so its soft to cut
yes I think if you use coolant with carbide you need lots of it. I have some indexable end mills that have holes for coolant
yeah, don't let it get hot in the first place
none is better than some, and loads is better than none
I sit corrected
but my machine dosent have coolant through the spindle
what luxury that would be
we have to drill a deep round and true hole for one job
into titanium and stainless
we are thinking of predrilling with a regular (cobalt) drill
then following up with a carbide end mill in the lathe
and making a little sleevy thing to flush both with coolant
no such thing as drilling a round and true hole :-)
why not use a boring head? is it a small hole?
basically making a 16mm Od 15mm ID pipe
* John_f_ goes away to try cutting slower with coolant
buttloads or none rember ;->
I'd wind it up about 1100 rpm, 15-20 ipm - take a chip- too light a chipload just wipes out the inserts.
the hole - best round hole machines ii have are monarch ee's and a pratt 2a jig bore
and i forgot the moore jig grinder
Does anyone know how much it costs to have things cut on a waterjet?
depends what your cutting and how much cutting your doing
basically they charge you for material and jet time
Dave911_ is now known as Dave911
Is there a chart of cutting rates for different materials?
spasticteapot: depends on the tool too.. for the weird materials ask the tool manufacturer
i think the going rate is between $50-$70/hr
i know to run our horizontal or 5-axis, it is from 150 to 200/hr!
is there a way of print # variables to a console or file?
there is a message function in axis
well not "in axis" as such
but you know what i mean
I feel the urge to debug this like any other program :) I've narrowed down the endless loop to the o100 wrapper funcs
I've worked through it in my head several times tho. it looks right to me, I can only assume the nested subroutine calls are broken in my version
the function does exist
MattyMatt: you can use (debug,#foo) from the g-code
but check the docs
I think you get a popup with the value, and a program interruption in that spot
that'll be fine for now. I was just about to try (msg,#foo,#bar)
bleh, I don't want to cut air waiting to get to the debug output :)
I'll just inline the troublesome sub into the 2 wrappers for now
yeah it all works fine now
I issued a T1 command, and the tool table has 1 1 10 3.0 as the first entry, but emc status shows tool_in_spindle=0
did you do a M6 and a G43?
no M6 no, but g43 yes
T1 doesn't change the tool M6 does
ah ok, thanks
I gotta learn TC sometime :) I'm remembering why I found doing it manually in blender seemed easier tho
and don't forget when you touch off tools make sure you don't have an offset active in the current coordinate system
what is TC?
I've been making gcode for months that only works with my trusty 3mm endmill
look in the User Manual in the Tool Compensation section, there is some examples of using cutter radius compensation
yeah I need to read it all thouroughly. I'm not actually changing tools tho, I just want to tell it the diameter of the tool I touched off with
so I haven't used any tool length offsets anywhere
that you can do with G41.1 in your program
or I can just add D1 to every G41 & G42 line?
if you have the diameter programmed in your tool table you can
neat, that'll do me for next try. this piece of wood is ruined anyway
just make sure you make a lead in move with your tool and it can be in outer space
try it on the ruined wood lol
[11:36:29] <MattyCNC> http://pastebin.ca/1957479
on loading it claims line 97 is too small leadin, but #30 is tool diameter
it is usually correct in it's claims :)
g0 x[#1 + #30] y[#2 + 4] g41 d1 g0 x#1 y[#2 +4]
my tool.tbl http://pastebin.ca/1957484
what diameter do you have in your tool table for tool 1
is your machine mm or inch?
what happens if you put G41.1 D#30?
it accepts that one now
now it's refusing to helix mill a 3mm hole with a 3mm tool :) I'll change that to peck
plunge will do for now
I get the same error about lead in
next is line 48, same for you?
yep, and with that fixed, the 1mm fillet in the outline stops it
so much for toolsize agnostic gcode :p
just fix one at a time, interesting code
I'll make them all 2mm fillets, and save the file separately, so I can fix the fine tool version later
I was doing it with a 0.8mm pcb mill, but that snapped
do you have a photo of a finished one?
here's a version, the template he's using is the standard spec one http://repstrapbertha.blogspot.com/2009/12/snow-today-means-its-another-mendel-day.html
gotta run now
machine parts from plastic chopping boards :) it's almost embarrassing but they work
I've been using cheap plastic cutting boards for stock for boat stuff
I've found HDPE ones 24x18x1". way cheaper than from a stock shop and 6 colours available :)
and my entire router is made of HDPE that the guy also sells as cutting boards
do you use proper 2 flute mills for plastic? I was melting delrin with a 4 flute
I use a single flute from Onsrud
these 2 flute pcb mills gave no problems, but at 0.8 mm they can't hold much heat
I've been melting acrylic, hdpe, uhmw with 2 flute cutters, and slightly less with small 3 flute mills
I'd use a single flute from Onsrud, but I have an aversion to paying that much for a tiny piece of metal.
I'll be in the position to afford the economic stuff rather than the "economy" stuff soon :)
I paid for software yesterday, that was fairly traumatic
I'm getting a bigger spindle before I start spending good money on tools. 1/8" and below cost more than 1/4" shanked ones
hi all from sunny germany
the onsrud 1/4" shank do seem to be much cheaper than the 1/8
anybody done much work here with tool length offsets and manual tool changes?
this is cool: http://www.automotto.org/entry/automobiles-from-nuts-and-bolts-well-that-s-minimalistic/
cool, but that has got to be a rough ride
JT-Hardinge: it's all relative
my head's spinning from the onsrud catalog :) so many tool shapes
[14:13:01] <Jymmm> http://www.etsy.com/listing/31122623/1933-ford-hot-rod-fear-factor
[14:13:31] <Jymmm> http://www.etsy.com/listing/48373644/tubs-the-scrap-metal-puppy
I like Tubs
something to do with unwanted fasteners I suppose :)
this g41.1 isn't working. in fact I think it's cutting to the right of the programmed line now
in which case there's a simple fix :) g42.1
nope it's cutting on the line. this slot is one tool diameter too big
the entrance move can make a difference too.
The only sad part is he's been a member since 2008, and has only sold 46 items. Even if everything sold for $250/ea, that's $7250 over two years.
aargh. I picked a fine time to try and master compensation, after I've announced the sale of the finished articles
jymmm, that would be a viable income for me right now :) as extra income that's not struggling, by artist standards
start a new file so you can always revert back
I have done. if necessary I'll add the compensation manually like I've been doing since day 1
I like Parker more: http://www.etsy.com/listing/39082756/parker-a-nuts-and-bolts-dog-sculpture?ref=v1_other_2
does the Axis preview show the compensated or the uncompensated path?
it always shows the center of the tool's actual motion
aha looks like I'v got it. I substituued #30 with literal 3.0
#30 should have been alright as a global tho? I set it once before calling any subs
[14:52:22] <cradek> http://www.linuxcnc.org/docs/devel/html/gcode_main.html#cha:O-Codes
#30 is a local variable in subs
my reading of that says it's a global, if you can use it for return values :p
"On return from the subroutine, the values of parameters #1 through #30 (regardless of the number of arguments) will be restored to the values they had before the call."
I don't see how you can read it that way...? Are we reading different stuff?
"Subroutines do not have "return values", but they may change the value of parameters above #30 and those changes will be visible to the calling code"
duh "above #30" I read as "#30 and above" :) mea culpa
JT-Work: Have you used 123 blocks?
JT-Work: Aren't the unthreaded holes suppose to be thru holes, so you can bolt two blocks together?
never did that before
I guess you can use them how you like
Well, I went to buy one yesterday, the threaded holes are 3/8-16, but the unthreaded were smaller than that and the bolt couldn'at pass thru
boot|sleep is now known as bootnecklad
that is the way mine are too, except for the solid one I have that has some blind holes or something
and it used to belong to a guy name F.A. Frisbie
That the unthreaded holes cna't be used to bolt blocks together
just have to use a 1/4-20 bolt through
Right, but if one block is already tapped, no need to use a nut.
* JT-Work is off to get the hydraulic pump rebuilt for the backhoe
[15:29:05] <Jymmm> http://www.dealextreme.com/details.dx/sku.4638
Should it be possible to upgrade from 8.04 to 10.04 through update manager or will I lose (or not install) RTAI components?
you will lose emc and rtai if you do it that way. you would have to add them again afterward. I have not tried doing it that way but it may work fine.
So, the other way would be to get the livecd and install that way (over my 8.04 installation)...?
after backing up stuff you need, of course
cradek: live cd is stock ubuntu with fixed kernel + rtai + emc packages?
or something else?
psha: yes pretty much
psha: it makes first installation very easy for users
so upgrading 8.04 to 10.04 + custom kernel + packages will work
probably, but I have not tried it
liveCD is so much easier.
psha: Is there a specific reaosn for wanting 10.04 other than it's newer?
2.4.x EMC ?
you can run emc2.4 on 8.04 just fine
Jymmm that one's only a single, try this one http://cgi.ebay.co.uk/NEW-PCI-PARALLEL-PRINTER-2-PORT-CARD-SUPPORT-WINDOWS-7-/110593683904
Jymmm: for me it's 2.6.32 kernel
which support realtek gigabit NIC's
psha: And you need a gigabit ethernet card on your cnc?
i need any card on my cnc )
but onboard one is rtl
and i don want to use only pci slot for another nic
psha: So, you would rather go throught the process of mucking with everything instead of picking up a $5 nic?
MattyMatt: what chipset?
nfi, but it'll be ancient enough to be supported :) who makes new comms chips these days?
Jymmm: my brothers notebook was running for half a year with custom kernel with my own fixes so changing kernel is not issue for me :)
i've seen pcie ones here too, so I suppose someone is making new chips
for production environmen it's better to use 8.04 if it's already there and working
i've got 2 of those in MCA if anyone needs them :)
MattyMatt: Only if you have the RLL hdd's to go with it.
This is very cool... http://marquee.blogs.cnn.com/2010/10/08/johnny-depp-drops-by-england-school-in-pirates-costume/?hpt=Sbin
oddly enough, my MCA machine has SCSI drive :)
270MB, but I could upgrade it
i think even recent SCSI drives can revert to 8 bit scsi 1 operation
8GB is the largest I'd try tho, or it mike break the bios
strange typo, sorry mike
cradek: quill is alive! i forced it all the way up yesterday, today i removed the seals around it, soaked everything in spray way oil and applied a lot of force on it and jogged it downwards simoultaneously
also i got a heater in there
hey good stuff :)
when i reached the lower limit it ran fine on it's own!
and did 10000mm/min no problems
very nice, was kind of worried for a while
scared the pants off me when mine stuck too
another problem quickly popped up instead
the hydraulic pump for the drawbar pusher began making a terrible noise
turns out the coupling between the motor and pump had been ground to dust..
and i have nooo idea where to find one on a saturday :(
devon two part epoxy =)
PCW_ is now known as PCW
* motioncontrol slaps mikeggg around a bit with a large trout
* motioncontrol slaps mikeggg around a bit with a large trout
MattyMatt is now known as Frogmilla
Frogmilla is now known as MattyMatt
SWPadnos: So where you be now? Germany? Thailand? Antartica?
what does EMC mean when it says, E Word with no G76, M66,M67,M68 ?
you have an E word in your gcode, but none of those codes (the ones which can use an E word) are there
OKay, what the heck is a E code for then?
input/output number i think
that's the wrong question - the right question is why is there an E in your gcode?
Because I'm setting it up to be used for extruding plastic..
what is the line of gcode that's causing you trouble?
G1 X10.0 E360 F1500.0
ok, that's invalid gcode because G1 ... E is not accepted in EMC
what are you trying to do with that line of gcode?
spindle hooked up. Now we need to mount an encoder to the spindle motor for shifting.
no clue.. it's been exported from a stl file into gcode..
then I can test the gearshift comp
sounds like you need to work on the export to get valid gcode
is gmail imap out for anyone?