Maverickmachinist
Cast Iron
- Joined
- Mar 1, 2005
- Location
- traveling US
I will try to explain this as best I can. Every countersink at work has been ground up, by someone trying to make a chipbreaker on them. These countersinks are MAO Ford uniflute 90 degree design. What someone did is grind a small groove on the inside of the cutting edge(cutting edge flute), and this makes them cut like crap. When I learned to grind drills I was taught that grinding the face will bring the cutting edge to a nice sharp edge. Is this correct, it makes since to me. I was taught that you only grind on the cutting edge if your making a split point drill. This is driving me nuts because I have gone over this issue with a few coworkers and they dont think I am right. Can someone settle my mind and tell me if you think this is correct, I hope i explained this well enough.