I should have mentioned we do a majority of our work in steel, and the copper tungsten works great for burning both. The problem I have is there is so much detail in the punch I am burning that I cant run any shrinkage and I need to use a .015 flat endmill for my finish passes in making it. So, I can either machine the electrode fast with a lot of wear using multiple electrodes, or take 2 hours machining the electrode with minimal wear. I might try one in copper tungsten this morning. I found out yesterday from tech support that the master packs I have been using is actually for edm c3 graphite.( copper inpregnated) and we are using just a high grade graphite. So the masterpacks are not matching what I am actually using. I am gonna order some of the edm c3 graphite from intech today to give that a try also.

Thanks again!
Zapit