hi, i've been using tellurium for the last week on some parts i normally burn with plain copper, i was told tellurium was better suited for burning wit and for machining, problem is that i'm getting fairly big frontal wear, this was not a problem before, i'm running it on an agie inovation, can anybody tell me how many tellurium electrodes they would use with an average burn? also i've heard that tellurium can be heat treated! is that true? does it make any difference for burning? thanx..