I bought this to mill rounded edges on a guitar body, and it definitely doesn't stack with pricier beats like Amana and Whiteside. It heats up very quickly and fights with a 1/8" thick maple end. The problem is that the blades seem to have some play where he's just decided to take half the wood off at the end grain compared to the side, so I had to hand sand the rest of the material.I saved a few bucks on this bit, but given the number of guitar bodies I build I think I'll go with a high end bit.