Hi,

my newly selfbuild simple R/C EDM machine works well with 'normal' sized electrodes.

But with my needed slim sheets it only burns very instable and the wear is unacceptable (up to 300% vs Stainless steel (1.4571,V4A)) high.

The last thing I know to try is milling round E-Cu57 (sheet copper is a different grade?!) rods to sheets, finding the right graphite or try tungsten copper.

Has somebody any hints for me or is the only possibility for me to build a better pulse EDM ?

Does anybody know a good description for a pulse EDM matching my demands? (I have the pulse-EDM Book of Ben Fleming but its very complex without a microcontroller)

To make yourself a picture of my machine, my problems and my demands here is a YouTube Video:

Thanks for your interest and with best wishes

Ralf