[utabintarbo]

Originally posted by jaydee116
Thats not helping the breaking problem. I usually go .03125 on the first pass and .125 on the rest. No matter how big your mill is you don't want to go to deep or the endmill will break. Unfortunatly the endmill is the weak link not the mill in most cases. I can easily break a 3/16" endmill on my tiny desktop CNC mill.

Endmill breakage is also of function of length. You always want to use the shortest EM available to get the work done with. You'd be amazed what kind of stock you can hork out with a short EM.

Bob