On Sun, 31 Jan 2021 at 16:06, Jon Elson <el...@pico-systems.com> wrote:
> I made a simple EDM for tap burning type jobs a long time > ago. It used something like 36 V DC, 30 Ohm resistor and a > selection of oil-paper capacitors of 1, 2, 4 and 6 uF or > so. A common thread here seems to be that my 1000uF electrolytic is the wrong choice. > Ben Fleming's pulse EDM, on the other hand is quite fast. > Flushing of the debris is a key requirement. Also, his > pulser recovers quite quickly, and so fires several thousand > discharges per second. Lots of people seem willing to sell me a book with their secret sauce in it. As someone who gives all my ideas away for free, this goes against the grain. > What are you using for dielectric? I tried tap water, but just set up steady-state electrolysis (and couldn't find an easy way to restrain the workpiece) So initial testing was done in air. The only commercial EDM I ever used used what we call paraffin (and the US calls Kerosene) as the dielectric. It wasn't something that I would want in my spare bedroom. Both due to the smell and the tendency to occasionally combust in a very, very, smoky way. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
