"Pete C." wrote in message
ster.com...
Bob La Londe wrote:
"Pete C." wrote in message
ster.com...
Bob La Londe wrote:
I have been playing with my new little Taig CNC setup. Getting it
layed
out
just right was a it of a pain, but I think I have everything except a
perfect tru vertical on the head. Its close enough for most of my
work
though.
Getting my mind around teh simple concept of basing the directions as
if
the
head was mvoving relative to the table kinda screwed me, but when I
did I
went OH! Duh! LOL.
I have been using LazyCam, Mach 3, Inkscape, and Corel Draw as my
tools
so
far.
Well, so far it looks like the easiest free software to use is
Inkscape
to
convert rastor to vector graphics. The problem is lazy cam can't
handle
much detail. It will handle PLAIN SVG files output from Inkscape.
Just
not
with much detail.
On the positive side its pretty easy to just make a project out of a
bunch
of little files, use lazy cam to convert them to code, then cut and
paste
them together, and edit some of the dimensions. Lazy Cam does some
weird
things to the Z dimension for some reason. I've broken a couple
engraving
points because of it until I relaized what was happenening. That or
had
to
re cut a project because it set a bunch of the runs at Z0.0000 for no
good
reason.
I may sit down and write my own little text editor with its own
process
to
check for out of whack dieemenions. Maybe editing my G-code in a
spread
would make it easy to search for or conditions before running.
Now I guess I need to sit down and read the Inkscape manual to make
modeling
in 3D a little easier. Its got some cool tools to do it though.
Inkscape
is not quite intuitive in doing 3D modeling, but its not bad.
Bob La Londe
www.YumaBassMan.com
I'd suggest you focus on using the dry run functionality in Mach3 to
validate your G code before breaking engraving tools or interrupting
runs to fix Z0 issues.
Um... ok.... how is that going to show me the difference between a Z0 vs
a
Z-0.0005?
Look from the side at a close enough view.
Yeah, that's basically what I figured. I think I'll just figure out an easy
way to check my code for limits before implementing it. I am currently
engraving at about 3 inches per minute while I am refining my process, and
it takes quite a while to do a project big enough to test how everything
works. I want to get things going to the point where I can sart a job and
then go work on something else.
I can run faster though after I get some other things figured out, and do
not have to cut as deep when engraving. Right now I am in the process of
designing and building some clamping fixtures for engraving sheet to try and
take out some of the variance by flattening it in the clamping fixture. So
far the best thing I have come up with is a square made out of angle with
t-bolt screw down tabs on the outside of the square and a floating clamp
plate on the floating side of the square. I figure I'll make two or three
so I can at least clamp flat the section I am working on. Maybe a 5 x 5, 5
x 8 and 5 x 12. This would allow me to make engraved plates up to 10 by 12
with my 5.5 by 12.5 working area. I think I'll have to go with something a
little different though for the mold making I plan to do after my engraving
project is completed. I don't think that will be as big a deal though since
I'll be starting with much thicker stock. Just surface it, re-zero, punch
my index holes, and then run my code.
I've got the pieces of the 5 x 5 partially clamped up and ready to be
welded, but I think I'll wait until tommorrow amd all the details have
worked out in my head before finalling that one. I am using some scrap from
another welding project to make these clamps and I do not want to waste any
material.