Just repaired a high frequency "coagulator", which is used to stop bleeding
in surgery.
New ones, I think are around six hundred and used about 3-4 hundred.
a ground plate is placed under the patient and the HF arc is applied to the
surgical wound
via various shaped "probes"; ball, needle, angle, etc. The HF current is
turned off and on
via a foot pedal.
While testing the repaired machine, I layed a couple of sheets of wet paper
on the ground plate
and held the probes close to or touching the paper. They did a neat job of
cutting/burning the paper.
Might be interesting to see if such a machine could be used to make gaskets
or to cut other materials
instead of a laser.
Gerry
----------------------------------------
From: Rich Thomas
The lasers are pretty pricey, about $2k for one with sufficient power
that will last for a while (the gas leaks out of the cheap ones).
cnczone.com has a lot of info on such things. A good laser tube has a
variable power supply, cooling of the PS, and other bits to make it work
well. A buddy of mine has a laser cutter kit he and a friend bought,
the whole set up (laser system and mirrors and frame and stepper motors
and controller etc) cost about $10k. A lot of guys have thrown money
away on cheap chinese lasers to learn costly lessons that it is better
to drop the $2k+ and do it right.
I built a CNC machine for a router, use it a lot. I could mount a laser
on it, or a sprayer, or most anything, but I shy away from spending that
kind of money on the laser (which BTW are UV lasers, you gotta be REAL
careful on those).
I just saw a writeup for using a blue laser from an HD DVD player to
make a nice little torch in a flashlight (kids! Don't try this at
home!), that might cut some thin vinyl or paper, and those can be
scavenged from the loser HD DVD format.
--R
Wilton Strickland wrote:
'Talking to engineer/inventor friend again at lunch today. 'Coupla days
ago, he was SAYING, " small/portable plasma torch," but he MEANT to be
saying "LASER cutter." His questions about plasma torch reminded me of
What he has in mind, though, is to mount a LASER cutter in place of the
pin
on a HP plotter to cut out gaskets, small combustable items, etc. Any
ideas?
Wilton
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