EDM of one sort or another comes up every few years. Pete
Grundemann(sp?) put one together. His demo was to edm threads in a file.
tomp ... now in Thailand has a lot of experience in edm.
tjtr33...at....gmail....com
Someone brought a non-working commercial wire edm to Galesburg and
almost had it working at the end of the week. This was a stepper driven
unit made by Bridgeport but had a different label. My memory seems to be
fading....
I worked a little bit at getting something going but other pressures out
voted the project. Still have a bunch of graphite and electrolyte around
here someplace.
Dave
On 2/1/21 8:41 AM, Jon Elson wrote:
On 01/31/2021 07:22 PM, John Dammeyer wrote:
I found some of the earlier articles in Home Shop Machinist Issue's
May/June 1995 and September/October 1995. I do not have part 2
published in July/August 1995.
However, in the 3rd part Robert Langlois describes the stepper motor
operation in conjunction with the capacitor voltage. His front panel
has switches allowing combinations of 50uFd, 100uFd, 200uFd and
400uFd in parallel.
Note that Robert Langlois is the home shop expert on WIRE EDM, which
is a bit different from
sinker EDM, as the wire is moved fairly rapidly past the cut. So, the
spark generator setup is
quite different.
I met him at a couple NAMES shows in the late 1990's.
Jon
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