Re: [CAD_CAM_EDM_DRO] Re: EDM machine

> Run at 400 hz or something? I'm NOT an electronics guy.
>
> Peter
> THRD, Inc.
>

Anyone that wants to play with edm should get the Poco Graphite CD;It models conditions for sinker edm using different grades of
graphite and works for at least aluminum, steel, and Ti.
Optimum conditions seems to be in the range of 10-100 Khz and 80-90% on-time. It would seem that switching semiconductors would be
the way to do this.
AFIK breakdown voltage needs to be about 90 V with the power pulse delivered at approx 32 V.
I keep hoping someone will come up with a good circuit so I can go try something serious. i.e. 35 A. :-)

http://poco.com

Dave