I actually bought two of these bits after bumping the first one against my CNC's set screw at high speed due to poor clearance estimation. To be honest I was surprised, the only minor damage from the encounter was the loss of the tip, maybe 0.015 overall length. Unfortunately, this didn't make it that useful for my CNC, so I reassigned it to shop grooving on my hand router. The cut is very good and the edge holds very well. I use this on an Inventables "X-Carve" with a DeWalt 611 as the spindle when programming with the V-Carve. It has worked very well for me so far and I will no doubt buy another one when this one finally wears out.