should a CNC mill always return to its origin when turned on ?
the point where all microswitches are pressed
it depend on setting home and limit switches on .ini file
dang, where's AJ?
Alpha1125 is now known as A-L-P-H-A
left 8 hrs ago
he quit, then you quit 3 minutes later.
how's things going?
just practicing some guitar
and now going to lay down, and watch tv.
I am getting ready to go to work
it's not ok ;)
heh .. I figured ;)
NASA Declares Discovery a 'Clean' Launch
they just losted some part.. :\
hi anonimasu_ :)
how are things going?
I just got back from a customer at work
i'm watching tv, looking for some app to record video on a file..
* anonimasu_ has some machining for a customer at work to do also
ar tou free in the afternoon, or come back to work ?
work nerver ends :)
oh, I am back at work now
work from 7-16:00..
after 16 work at home ? :P
but I usually get to work ~9 in the morning
after 16 I do more work for work at home
* anonimasu_ found it really fun to machine on the toolchanger
I am going to bore the tube of the lock plate tonight :)
yeah, it should be very funny :D
I dont have stuff to make the motor mount yet. need sealings and some spline axle..
I will wait .. :))
I dont care much for that part..
it's the locking I am interested in..
it's so difficult to find ?
I can mill the axle.. but I cant make the internal splines of the piston
150kg(spring) + 175kg(pneumatic) should be enough to lock the tool in place
wow.. i suppose so
175kg that's with 8bar of pressure
should be strong
yeah should be plenty to keep the tool locked..
that's in the <- -> direction
to keep the plate on the lock pins
the design is very simple
good luck ;)
I wish I could make it in alu instead becasue then it'd take 5 hours to machine it all..
yeah, is better
but iron is way better for rigidity..
so I guess making the housing out of a 10x10x10cm cube of iron is good..
not for weight i suppose..
oh, I have a heavy enough lathe ;)
the lock pins need to be very strong
or well whatever they mount to
since that's there the force will go
I can image ..
[13:01:57] <anonimasu_> http://www.homanndesigns.com/ToolChangerProject.html
not mine though :/
I want it !
*looking for a image similiar to he's desigfn
I will search too
I think mazak has it at their lathes
you googled better than me ..
[13:24:45] <anonimasu_> http://www.doriantool.com/Turrets/acc_s3.pdf
[13:25:34] <alex_joni> http://www.combitech.com.tw/forceone/turret.htm
ah.. brochure, nice :P
[13:26:02] <alex_joni> http://www.umaine.edu/amc/images/machines/Okuma_ESL8_24.jpg
I have a better idea then what I have now that wouldnt require the splined shaft.. but well, having the splined shaft reducdes machining work later on
alex_joni: now I just to make it possible to have 8 driven tools ;)
[13:26:54] <alex_joni> http://www.homestead.com/tool20895/files/mini_lathe_tool_turret.jpg
alex_joni: , really nice
[13:27:50] <alex_joni> http://www.goldensun.com.tw/product-new/Products.htm
is yours machine ?
Jacky^: not really ;)
the last ones are nice
the okuma one looks like mine will
[13:29:33] <alex_joni> http://www.quackenbushairguns.com/TL1.jpg
revolver lathe :)
the next challenge is to make the turrent index.. fast.
OK folks - I have downloaded EMC "BDI-Live_rc46.iso" from http://www.isw.uni-stuttgart.de/personen/t_franit/modell/e_emc.html
- there was no md5sum I could find - I cannot get past the first page on the auto-install script - wizz-turd will not work properly
RonB: i think paul_c can help you
would that be Paul in UK on the BDI page?
thanks - I shall crank that computer up and accuraty describe the problem in an e-mail
you can also find here later..
does he come on the IRC channel often and/or at a particular time?
he usually comes aroung somtimes
you should come bac in like 4-6 hours
gee .... thanks ... maybe
and check :)
will do - and an honest thank you
RonB: do you have enough RAM for Live?
[14:32:51] <cradek> http://sherline.com/emc/
ok, looks like it requires >= 256
thanks cradek - bad checksum
time to go to the public library and download another copy -- on the 6th bad download
use a client that supports resuming
I do - fierfox
appears to be windbloze only
RonB: are you md5summing the .iso file or /dev/cdrom?
(I understand md5summing the cd after burning rarely works, especially with ide cd-rom)
I always assumed one md5 sumed before burning
yeah, that's right, just checking
and - this is the first tiem I have had THIS much trouble downloading a file
sure like the apt-get function on debian
the bigger the file, the more often TCP messes it up
you might try another mirror (maybe sherline)
will try sherline tonight -
did realize sherline had the live version
RonB: you might also try http://dsplabs.utt.ro/~juve/emc/
just downloaded prozGUI
prozGUI ? what's that?
anyone here ever tried making a homebrew desktop-size injection moulding machine ?
and then create the molds with a CNC mill
* alex_joni goes home
I've got my refund now
from pico systems
dpy: that could be done
Gotta do some servo price shopping today, any suggestions where to start?
have you bought from them before?
although not directly from them..
next time I'll be importing the motors from US..
they cost 2x over here..
depending on complete cost
about $325~-400~per servo
but it depends a bit on how much torque you need brushless/brushed..
if you are going servo buy drives from john elson or ebay some relabeled galil ones :)
* anonimasu yawns
did you get you USC board from him already?
maybe next monday
* anonimasu craves for some servos he's retailer off work sells..
JVL with integrated drives..
they have some 220v drives
4nm ;) 2700rpm
with integral pid and stuff..
the jvl ones?
more like $2.5k
horrid isnt it?
yep, maybe I will stick with steppers - can't find shit on ebay (would like three matched ones)
not big deal really..
but atleast for the x,y it's nice to have the same :)
the axis:es that goes fast is where you want/need servos
I want 10000IPM on Z axis with a 5" travel
and resolution to 0.0000000001"
just hook your steppers to mains..
well, I guess I never did say I wanted to do it more than once
[16:17:01] <Jymmm> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7533327028&category=78195&rd=1
hi Jymmm :)
playng on ebay ?
Jymmm: tiny ones
looking for servo motors
you want more then 24v
and thoose are without encoders I think
ROTF --> 'It's so easy' http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7532151735&category=71394&rd=1
more your size ;)
mach2 as controller software
[16:25:50] <Jymmm> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7532931620&category=78195&rd=1
I need thoose :D
but they wont ship them to me
thye dont ship outside the US
* anonimasu hates that it's that way at most ebay auctions
it's like $25 shipping for them.. and $350 when it arrives here
is that shipping or duty tax?
shipping + some tax
can't you cross the border to some place it's cheaper?
it depends though
how it gets shipped..
anonimasu : Tell ya what... I'll take my 33% (as in one motor), and ship the rest to you. He has 3 auctions goin
Actually.... it MIGHT be cheaper that way.
not right now though
[16:37:39] <Jymmm> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7533487703&category=78191&rd=1
I am a bit short on cash :)
short as in no more money on the mill until next payday ;)
Somehow I didn't realize that geckos needed a heatsink
oh, ofcourse they do :
bah, geckdrive.com is still down
had to try it
typo in irc, but still down
did sme arc blending tests
les you ol dawg you!
grr emc list is not mailing out anything
are you home cradek?
anyway...if you see this later...
Here's the skinny on arc blending
how did it work ?
I think he's typing
* cradek makes faces at les
g64 DOES do something other than g61 on arcs and lines
I would call it a "misblend"
did a bunch of tests
If you are running at low speed and moderate accel you cannot see it.
hm, would a tight circle show the problem with arc blending?
I tried to machine a circle and the machine staggered between the arcs..
so you think it does some kind of blend but it's wrong?
That's because the blip is out of the control loop bandwidth
now as you increase speed it gets more dramatic
the threshold of seeing it on my machine was about 30 ipm
did it while I was doing g2 x0 y0 i0 j5 f1500
send me some servos that will let me do >30 ipm then
above...it gets worse and worse.
at 200 ipm it is horrible
it does show up then
brb, I have dinner
square of the speed thing I think.
I'll be back to discuss a bit more
les: what is your max accel? If I reduce mine a lot, do you think I would see the problem?
so it is the same old misblending that tp/tc always does even on connected straight lines.
just an arc manifestation of it.
chris I am not sure...because it is a misblend, not an exact stop
exact stop acts differently
G01X1 G01X2 G01X3 will hiccup with each block
even in G64
yeah I understand exact stop
it always did that
Fred Noticed it
I tell you, tp/tc is garbage!
anyone has tried this: http://earth.google.com/
yes jacky it's cool
i'm going to try it
ms seem working for a concurrent product
Servo : 296 oz-in, 6k RPM, 200v, $900 YEOW!
windows only?? nobody still uses windows, do they?
i will try on a virtual machine :P
but are working on other ver..
they said ..
Is this strictyl EMC? like is it seen in Mach or TurboCNC?
I've seen some hsm machines do a loop on sharp corners
when changing direction..
for for outer corners..
or well, not hsm, but well higher speed
[17:13:50] <anonimasu> http://www.emuge.com/news_events/featured/carbide_end_mills/cutting_action.html
wooow cool :P but i've no directx non emulated machine :\
the hpc video
[17:15:24] <anonimasu> http://www.emuge.com/video/hpc.wmv
a friend of mine has developed a software like earth.google many years ago..
[17:18:16] <Jacky^> http://web.tiscali.it/fspaghetti/
look at english ver.
I wonder that kind of spindle that machine has
* anonimasu sighs
stuff I'll never be able to do
they are milling 59RC stuff at it..
[17:20:24] <anonimasu> http://www.emuge.com/video/hartbearbeitung1.wmv
* anonimasu gets jealous of that movie
when they start cutting the cone
Jymmm: seen it?
women are jealous of other women, anonimasu is jealous of a machine! lol
yeah, just finished.
what do you think=?
I wouldnt dare to cut in that stuff on my machine
if that's 59RC.... Yeah baby! yeah!
Jymmm: easy cut ;)
But, can it mill EPS?!
if you can export it yes..
I wouldnt mill eps with a mill like that
EPS == Expanded Poly Styrene == styrafoam
you could mill it out of titanium if you would like..
[17:26:29] <anonimasu> http://www.emuge.com/video/cbn.wmv
<- arc blending in action
ok did a final post on the user list about arc blending
Jymmm: some guys look at car's..
les: can you give me a copy
I dont get the usre list just the dev list
if it's not too much work
heh I do the turkey call about that speed...but they're wood
sending file in a sec
I better stop looking this will get expensive
[17:29:49] <anonimasu> http://www.emuge.com/video/kurvenscheibe.wmv
les: neat :)
Hate to sound dumb... in that video which is the 'arc blend'...the initial spiral, or the taper?
* anonimasu stops looking at theese damn movies
les: thanks :)
* Jymmm watches anonimasu pull out ALL the credit cards... ok I can put this much on A, and this much on B....
lol, I dont have any credit.
Silly Q, what IPM are these videos you think?
hard to tell
the hpc one is 433 ipm
I think I could do that kind of stuff on aluminum perhaps....if I had 25 hp on the spindle
the machine is stiff enough
I wonder if I could do it with a new column and several KW.
"I could do that no problem on a $100 HF Mini-mill"
with the huydralic pump there should be no problem going to several 100kw on the spindle.. :D
but well, it's throw the table away.
Jymmm: have you seen the water spindle?
what was it called..
the hydrostatic on
the one nist developed
that guy les's machine design is derived from
[17:37:57] <anonimasu> http://pergatory.mit.edu/perg/awards/TURBOTOO.html
les: do you have any idea where the arc blending does happen?
I do use Slocums methods with most all machine design
* anonimasu nods
what line in the tp
He, like me is an Illinois Tool Works consultant.
* anonimasu cant remember what file in emc2 the tp resides
anders it seems a blend is hapening always. But it is a wrong blend. A velocity profile would show a quick v like blip in the downward direction.
it gets worse with speed.
'Speed Kills' any crack dealer can tell you that!
It finally gets bad enough to be a complete stop
at what speed?
but it is not at low speed
hm, 1000mm/min is slow..
it depends on tuning jymmm
I dont even have feedback to the machine but it happens with the internal PID loop for the steppers..
it is a math error
is it FPU or algo ?
*looking for it now*
les: could you explain how the blending should work?
you think someone did 'linear' when they shouldn't have in the algo?
Fred saw this in lines years ago here.
I am trying to find where the arc blending is..
some in tp
but remember...it is not exclusive to arcs....connected straight moves do it too
actually the tp isnt that large..
tp/tc always was.
tp.c that is..
achilles heel of emc.
all the developers need to do a vulcan mind meld with les' brain
maybe it would be a good way to start to document it.
I can't find it
each person involved documents one function.. or something like that
no the error
tp/tc is a discriminate based algo
maybe we should start commenting out blending and trying it..
and re-enable stuff until we can find where it happens..
well I did that today just by MDI G61
les: yeah but in the file..
tpSetTermCond(tp, cond) sets the termination condition for all subsequent
queued moves. If cond is TC_TERM_STOP, motion comes to a stop before
a subsequent move begins. If cond is TC_TERM_BLEND, the following move
is begun when the current move decelerates.
well just that it is not an exact stop vs blending thing
it is a misblend
it becomes an exact stop + dwell at some speed
the "v" blip in the velocity profile finally gets a flat bottom at some point
so stop+ dwell
hm, /* If either this move or the last move was a pure rotation reset the
velocity and acceleration and block any blending */
I posted that
that is foe a,b,c rotation axes I think...not circular moves
yeah I thought so..
since arcs must be blended if you make a circle with them
hm, pen & paper
les: what function is the entry function for the tp?
what function does get called first that starts processing the queue
couldn't you have some gcode and a trace program going on so you can narrow down where in the code it is?
something in emctask or emcmot I think...not sure
yeah, but what gets called.. :/
I am going to write all this stuff down how the queue gets processed step by step..
anonimasu: couldn't you have some gcode and a trace program going on so you can narrow down where in the code it is?
* anonimasu is tired of not understanding
jymm not so easy I think
les : Why not? No actual machine needs to be connected.
Jymmm: it's a entire algorithm..
Jymmm: understanding the tp is more important for fixing it..
anonimasu would you bet $100 that the sole casue is the algo?
Well some might be able to...just not me...Paul says traces prturm a RTOS too much usually
I wonder if you could throw all segments to a file..
files with the calc steps..
wouldnt the calc error be fairly easy to spot, if you could print what happens during a line -> arc blend
les : I understand that, but what I'm saying is the CASUE of the problem hasn't been narrowed down and confiremd.
Just like anything... the CASUE is the hardest thing to find, the fix is much easier.
cradek: are you there?
Well if someone can, great. I am lost in the emc code jumble. I just cannot follow it.
that's why I am resorting to pen & paper..
going to write down what calls what.. and then write down what it does..
les that why I was suggesting a trace program,
les: you will get math questions if you dont mind explaining
I think cradek has a pretty good understanding...he fixed that helical math error
math of trap blending is easy...np
but much of the other math also..
I hate this crap, no one seems to understand it..
it's "just" 840 lines.
and with lots of stuff checks.. that's nothing to bother about..
[18:04:25] <Jymmm> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7534109355&category=104242&rd=1
or well, stuff that does not add complexity
but well until cradek comes back I'll wait with starting got some machining for work to do
going to bore the hole in the toolchanger also
les : che ck out that link and tell me what you think?
* Jymmm is so servo clueless!
but better then the other ones
the ones without encoders ;)
I emailed him asking what IPM he gets.
in all axes..
where did you see that?
sherline has 20TPI screws, MY machine has 5TPI ballscrews and gears
you will get more speed from it then..
but that depends on your gearing
is 2:1 'ok' ?
no idea really..
you should have asked about what speed the motors are
how many rpm/s
* Jymmm is so servo clueless!
yeah but that
that's what matters for your speed.. you can cals it after you know what rpm you can run them at..
oh, NOW he tells me!
OMFG what thunder
it aint the thunder you have to worry about!
jymm, sorry cooking lunch. your ebay link is this:
[18:48:51] <les> http://www.cadcamcadcam.com/index.asp?PageAction=VIEWPROD&ProdID=74
les: I think I saw this guy's stuff at NAMES
les: I remember not being too impressed - I think the jog speed was still really slow
what's up chris?
talked to les about that blending stuff?
yeah, he says he thinks it's blending but it still sucks
I don't understand all the details but it starts getting bad at 30IPM
les ty, cradek nice to know =)
hmm.. that should be possible to fix I think
but paul's planning on changing the TP
Hmmm... I think I need to start looking at various bits... v cutting, ball, etc
sorry eating....yeah that's Fred Smith's stuff
oh, hello les
how's the golf course ;)
les quit getting sloppy joe mix in the keyboard!
I am working on it!
cutting and plowing away the old weeds
seed in september.
cutting and plowing?
prevert .. whats wrong with the traditional methods?
my two hole golf course.
weedkiller and explosives
* Jymmm offers to retrive Les' golfballs from the pond at the cost of $0.75/ball.... I'l make MILLIONS!!!!
actually I was gonna use chemicals...but they are expensive...and might kill trees.
oh.. and you need trees to stay on course
cutting works pretty well
wait a week...new weed seeds come up...
probably better off with a chain harrow
ploughing goes deep and brings up too many seeds
will borrow one or use old piece of fence at september seeding time
I am just disk plowing...not too deep
disk plowing still goes fairly deep
disc harrow we know them as
I can control it
now, 12' of chain link fence behind the tractor.....
good for breaking in manure too
les (I grew up on 7.5 acres of walnut trees)
I have some
mostly oak and poplar.
my wife suprised me last night ..
gave me a card, just before midnight
Heh, I remember one time as a kid, they were watering the orchard and I got stuck 18" in the mud!
it said "happy anniversary" ...
Don't remember if I ever got my show bak or not.
I think she wanted me to have rememvbered first though
robin_sz: Better make it good!
a dozen roses aint gonna cut it
well, I aint remembered one yet ... so its a long tradition
robin_sz That card was the hint.
well, it was only given 5 minutes before the day was over, hardly time to do anything about it
robin_sz : Just go make reservations somewhere, then a carriage ride (or somethign) afterwords.
I can't remember either of the TWO i had
this was 19 ... i better not forget next year
robin_sz: set up an reminder ;)
Women will not put up with me 19 days let alone 19 years
I'll try to remember to do that
crm should handle that (lol)
alex, hey good idea ;)
and if I miss it .. I can always flag it for followup a week or two later ...
setup a cron job on your laser to to cut out a reminder!
we were cuttin 8mm today
and bending it in the press
Bet you'll remember when right in the middle of a job it starts cutting out 'Anniversary in 72 hours'
bending 8mm plate was a bitch ... as I had no bottom tooling for 8mm
needed a 50mm V block, or bigger
so ... I made one :)
lasered out a dozen V's in 10mm plate ... stacked em in a line and welded down the side of em
linished up the critical bits and it worked just fine ...
bending pressure was only 12t for a 120mm bit of plate
well I am gonna go out and power down the cnc....I think we have "problem explained" on this arc blend thing at least
not problem solved though.
then back to playing with this piezo film. I mave to machine some stuff for it.
I just killed a endmill
I was milling at 800mm/min at pretty high rpm..
in some iron..
then the damn gearbox changed itself out of gear and I didnt notice..
anonimasu didn't we tell you to stop trying to mill the grinder wheel while it's running?
it was cutting nicely
and then there was sparks..
could have been a sand pit if it was cast
or a piece of included carbide - someone's old diamond
I'd rather do that then scrap my only large endmill because of a stupid gearbox..
I was going to mill the stuff down 1cm..
alex_joni: have you looked anything at the tp
parts take on new idenities whe they start eating tools
anonimasu: not really
this part used to be a toolchanger.
or well soon to be
currently I am cursing MPPE
and sarge for not including it
alex_joni: ok, I am trying to find somone to tell me where the TP gets called..
and what does get called..
it's pretty simple
you got basicly 2 functions
tpAddLine and tpAddCircle
that get called out of the motion controller
so the motion controller gets the commands through SHM
then calls those 2 TP functions
and TP is supposed to add that to the trajectory
that's a very not "indepth" view
I am starting to write down the TP..
Is there a colored epoxy I could use to fill in aluminum/brass after engraving?
does anyone here know if there exist some movies of a running "Brute" *CNC mill) by John C. Kleinbauer ?
Jymmm: nmost people us hard wax
you goiung to try and engrave on that router?
robin_sz wouldn't that fall out eventually?
robin_sz : That's what I bought it for.
you're kidding right?
nope, why would I be?
we are not talking small stuff here
lots of epoxies will work for that - many coloring agents
mmmm, I wouldnt hold out much hope of engraving with it
RonB I've only seen the stuff from home depot
robin_sz : Getting THK style rails and have thomson ballscrews on it.
Jymmm: it unlilely you'll be succesful engraving on that router
there are a lot of "boatbuilding" epoxies I have used
a few hundred gallos or so
RonB Ah, ok. never thought about the marine stuff.
heigth control is critical
can be dyed with a lot of substances if you know the properties
well, as I said, the engraving trade use hard waxes
RonB which I dont =)
fabric dyes in proper alcohol will do it
Jymmm: sold in all the engraving catalogues
RonB by proper alcohol, you mena like denatured alcohol?
too many "tricks" to try and relate over IRC -
denatured should work - always try a small sample first
some don't like a certain alcohol or thinning
RonB Always do =) Just dont need a 55gal drum of epoxy though
otehr epoxies don't care
Jymmm: you have a floating nose cone engraving head?
I'm just not what "binds" to aluminum well.
woodworkers suppliers ahev a bunch -
which one you planning to get?
"WoodCraft" carries System# epoxy
robin_sz none at the moment. Like I said, I'm not talking small stuff like a lighter or plaque.
RonB good stuff?
good as most -
or expensive stuff
have worked well for me - my favorite when working wood with hand tools
Jymmm: exactly, you might get away with a Z axis router on small stuff, but big stuff will nedd floating nose cone for certain
quart size $35 or so? IIRC
should last a long time
robin_sz - I'll say bull manure on that
till I kick the can over accidently of course.
depends on too many factors
RonB: have you actually done any large engraving?
good material and good hold-down you can engrave almost anything
and a few hundred feet of large engraving
well, my experience is that variations of 0.5mm in depth make it look like shite
few materials are consistant enough
and yes you are right
personally I could never hold that over much more than 12" sqaure
but - the floating nose cone is not CERTAIN
which is why ALL the commercial machines use a floating nose cone head
yes - and I shall drop it there -
as you like
but - having process engraving without a cone head over larger than 12 FOOT material - I know it can be done
if the material is dead flat..
possibly .. on a hi spec machine
I only want the epoxy/enamel to contrast anything done in metal, more of a squeegy in, wipe off the excess.
keeping 0.01 is not a problem on a good machine..
mill the material on the machine you are going to engrave it on
or with my crappy machine.
yeah, that works
Same hold-down -
but Jymms is bottom dollar and flexible .. its going to suffer real bad
never touch material between milling and engraving
robin_sz: Lend me your credit card.
robin_sz I'm already into this for $3500USD
Jymmm: there are some things that you can work with succesfully though
without a floating nose cone
* anonimasu sells a drawing for a floating nose cone head $200
$200 pesos... sold!
theres a polythene foam laminate, either 1/4, 3/8 or 1/2" thick
diferent color in the centre to back and front
routs easy and is almost vandal proof
VERY popular on golf courses etc
int turn; /* turns for circle */
alex_joni: is that how many segments the circle should be divided in?
robin_sz I've only seen the PVC stuff.
I forget the names, there one or two brands, its in all the signmaking mags
and corian works OK too
[21:05:05] <RonB> http://tinyurl.com/96y3f
corian is too fucking expensive
and dealer only sales
Jymmm: your business sense astounds me
not harbor sales
robin_sz: $12/sq ft to run in a 24" x 24" machine that is a DEALER ONLY sales product, I dont' think so.
Jymmm: you can get it from almost any singmaking supplier
robin_sz The other stuff you mentioned sound much better.
buy it off local shops
and anyway ... you missed the point.
what do you care if it is $12 a sq foot
your CUSTOMERS are paying for it
or would you prefer to engrave in dog turds? ... its always better to work in quality materials
* RonB gee robin_sz - you are so DIP - lomatic
back for a sec
les: high speed routing them ;)
WE all know.... shit happens. If a bit broke in the middle of a run or have to do rework the cost of the raw material could knock out any profit. IF I find a market SPECIFICALLY for Corian, that might be another story.
why do you think I prefer to work in stainless and weird high tensile steels?
you have to let them dry first, I suppose
because I charge my customers more
bet you could find someone to buy em!!!
much more profitabel than hacking through HR4 plate
les: got a clue what emcmotCommand->turns is
stainless takes a while to dry
anonimasu: /* turns for circle */
cradek: yeah, but what turns?
cradek: is it if you have 2 circles in the same spot?
that are the same, or is it if you want to do something else
with a machine like jymms wood, delrin, acrylic (ouch) will be the rule
I had to figure that all out when I fixed the helix bug
let me look for a minute to refresh my memory
* anonimasu is trying to understand as much as possible of the tp
I never heard of turnsis
les dont forget my machien can do Nickel too =)
anonimasu: see circutil.c about line 66
oh a urethane foam
one of the most important ones
what's that in emc2?
anonimasu: I think it turn might be just -1 or 1 in this case, representing the direction
anonimasu: no idea, sorry
yeah that's probably what it is..
see pmCircleInit() wherever it is
since there's nothing else to denote which direction it's going in
there's support for multiple turns per circle, but I doubt the interpreter can ever give that
so it's probably direction
dont worry about it :)
I just answered a list question about ferror and feedforward
feeforward gets interesting in voltage and velocity mode
cradek: close enough
but no tquite
it does give the direction
but also the number of turns
look at _posemath.c
right, but can the interpreter ever do more than one turn? I don't think so
I know, look above :-)
RonB you said NOT HArborSales?
right.. ok, was busy reading code ;)
said harboe sales will probably seel even to you
RonB why did you say that?
just being mean I guess .... no - I have purchased as an individual from them
anonimasu: any more questions?
RonB I have a resale number =)
they might even accept that
for a pleasant change, let's all try to be nice for a little while
cradek: now that's a challenge
cradek "BITE ME!" =)
alex_joni: for some, it might be
cradek: seems like it
Anders, Alex, I'm sure you have figured out all the tp code now. Will you please tell me how it works?
les: it's just placebo code
from what I see
funky little wrappers around nop's
might as well be for me
RonB robin_sz thanks for hte ColorCore info
* anonimasu yawns
Jymmm: can I ask you a question
I think I'll call it a day
robin_sz : Is the question loaded?
* Jymmm reluctantly says.... 'um, sure'
you are planning on making money from the engraving and signmaking business yes?
robin_sz I think that's been estabilshed over the last few months, yes.
have you been so one of the big signmaking trade shows yet?
have you purchased a signmakers price book yet Jymmm
robin_sz : EOM in Long Beach, CA
better get one
RonB Never even heard of such for signmaking.
Jymmm: and you didnt come away with all these smaples of cute materials, books of supplies and a bazillion trade leaflets on a million and one engraving substrates?
robin_sz : Going to try and hit the show at the eond of this month
so not been yet?
robin_sz Not specifically this industry, more the printing/vinyl side of it.
well, if I can offer one bit of advice
don't spend cash until youve been and seen the pitch the game is being played on
might find this helpful too:
[21:33:33] <les> http://www.signweb.com/
robin_sz : I'm a hard sell, but appreciate the advice
I think when you see the sort of quality people are getting, and what customers expect from modern engraving, you'll see why a homebrewed router aint going to get you out there in with the real players
Oh fuck me... It's THIS weekend (sigh)... http://www.nbmshows.com/05-lb-welcome.html
I say best bet is small house signs with generator power at craft shows
les: why so?
I've always thought that doing custom jewelry/badges/signs at the mall or a craft show would be successful
this stuff is VERY cool --> http://www.flexolite.net/lightsheet.htm
people would certainly pay to watch the machine do something
dollar's worth of cedar....unfinished or oil on the spot...< 5 minitue carve
pre cut the blanks
v carve just street and numbers
cradek : In front of one of the WallMarts here there was a trailer setup todo carving 'The Johnsons'. I thought I'd take a look (camera in hand) to see what he was offering... not there anymore.
Jymmm: portable is an interesting idea
cad/cam time just minute or a few (just type in the TTF and go)
cradek HF offers a SMALL foldable trailer, I could hitch on the back.
Robin is right...not going to be a living...but i'll bet you could make a chunk of change
build up solar powered led edge lit (light pipe)
[21:41:45] <Jymmm> http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=90154
where ever you carve it will light up
I've seen that kind of signs..
edge lit acrylic?
i'll bet the wood ones would sell well at craft fairs for about 25 to 30 dollars
or light pipe?
single strength window glazing
and mount the sheet over the v-carved sign
it is total internal reflecting where clear...so it does not light up
or do you mean carve INTO the acrylic
then edge lite it
where you carve is rough and leaks out the light
Right, This I've done when I was looking at laser engravers
but 911 signs in cheap wood at shows is better I think
Even got a CCD lamp to play around with
got it working ;)
MPPE & PPTPD
les : Even found a cheap source for bulk solar garden lights to retrofit for the electronics, battery and solar panel.
right there you go
I have done a good bit of that stuff
les : Still need to figure out the packaging while not having it blow out after the first rainstorm
I even have some patents on that type of thing
Wehn I tried with LED's , the light wasn't consistant.
it can be.
Jymmm: try those nice 5W LED's
and PWM them ;)
alex_joni : It was the light didn't travel well thru the material
CCFL now, THAT's another story
I figured 20 mW would be enough....just to keep the solar cell size down
The eye is so non linear
les whent he light hits the carving, notihing for it to bend aroudn to the other side, so you have to light both sides.
for example on a sunny day solar flux is about 1000 watts/m^2
on a rainy day it is about 20 W/m^2
but it is still plenty light outside
light only needs to hit an edge.
I even considered EL wire, but not bright enough.
el wire is usually milled inside it's own channels..
to write stuff
If I use about 1 LED per 2" of length, it's ok.
too high voltage...inverter costs money.
standard everyday red LED, difused.
les Yeah $8
and too noisey too
I bought both to try CCFL and EL wire
I used to screen print EL consumer products before it got to be a commodity
les : I'd LOVE for this stuff to fall off the truck in a back alley somewhere http://www.flexolite.net/lightsheet.htm
order a piece :)
* robin_sz eventually secures some rf connectors
that took a few weeks of searching ...
rf? for what?
the spare laser of course, silly ;)
big RF excited anulalr wavegude
anonimasu the invertor is huge!
13.57 MHz or whatever?
was missing 3 patch cables from the exciter to the head
I think 13.57 is resrved here for that...but don't remember
hm, I wonder how much that stuff would cost..
if you were to put it in your ceiling
well, take 3 x 13.57 and .. you get?
I've got about 100m2..
but I bet it'd give a nice light
the 40.xx spot freq is the 3rd harminoc of the 13.xx one ..
les: thnakfully, the 3rd harnonic of 40.5xx is in a totally unused part of the spectrum
it is kinda worrying .. I did check to make sure it hadnt drifted low
radiate 25 kW on the wrong frequency and it could get some attention
now, you know I would not connect it to a 1/4wave whip ...
nice stuff :)
what is output impedance?
I'm on 2 VPN's right now :P
valve amp too, so loads of matching potential
gosh, I have forgotten the impedance of a quarter wave end fed dipole
did you know .. a 1/4w coper whip will emit a big purple plasma from the end and burn away at about the 15kw mark?
anonimasu : a sample kit 4" x 8" and invertor was $150
The heck with lasers. I would take that rig, retune it for fm broadcast, set up on abandoned North sea oil rig, and spew forth bizzare political views and constant 60's rock music 24 hrs a day.
its a Henry commercial TC
les and the callsign would be KWOW
anonimasu : And, from the backside (if mounted on glass) is clear...
* anonimasu is still wondering why milling iron is painful
anonimasu : So you could put it on windows and still see outside.
Jymmm: you're going to mount your backside on glass?
Because Graphite is as hard as diamond in some planes?
yeah but graphite isnt iron
but it is in there :)
bits at least
iron is neat
and somehow I got 95% graphite there.
iron dust is a bastard
iron is hell to mill.
ha...but cast iron was eutectic iron carbon and the carbon precipitated out!
even worse then alu :D
it mills and turns beatuifully in my experience
but screws your machine
it cut best at 800mm/min and 2700rpm
I never have a problem with it...but use carbide.
rigidity is crucial with iron
bleh, I am shit out of luck then.
one word of advice
wipe your mill down, then do it again
iron dust is abrasive
and worst .. it susts onto surfaces and fscks em
heh, taking it down into molecules after I've milled 1 hour of iron..
I can find funnier stuff to do :)
I am not making dust..
the reason for the high rpm is to avoid resonance...
whatever .. clean up after you finish, its worht the effort with iron
I found out the hard way :(
folks, it's after work, so I am gonna go play on my new tractor toy a little.
ok, I'm going to play with my wife
wanna take bets on who has most fun?
* Jymmm hands les his straw hat and overalls
night guys ;)
nothing like taking the wife for a tractor ride
wouldn't that be hay ride?
you need to cut it first
nope, just find someplace where it's already done
I have nothing to cut. just a bunch of logs to carry
les no robotic arm on it yet?
les think 'Aliens'
well joystick on the loader...
I still have the urge to flip over cars
not mine of course
les the movie Aliens, where she's in the machine and it responds to her body movements
yeah, thats it
* Jymmm looks for v carving bits
back from tractorfun. too hot out there. had to get back into ac.
heh I checked the radar . cold front is on the way.
there ya go
then you can just grab a bottle of brandy to warm up while on the tractor
With dew points in the 80's any physical exertiuon at all and I overheat. Sweat does not evaporate and cool at all.
Yeah, it's 50% humidity here, but only in the lo eighties today
ah, only 78
I love these reusable wire ties!