Thank you Kmed & Tom,
looks like no magic here!
Can you tell me the wear rate on graphite, would it be much better then copper? I have now app.. 30% on copper.
I have also tried to reverse polarity, that was when I did some carbide burning but felt that it didn't made a difference.
When flushing with too much pressure, it was actually behaving negative.
Finish is not a big issue, it's a rubber mold plus minus .002" tolerance, radius on bottom, across the 3/4" with, is about 2".
thanks,
Konrad |