How to Hand Sharpen a Twist Drill

[Mayhem]

Thanks Tom, I was referring to the angle of lip, as opposed to the point angle. You said in the video that it shouldn't be flat and that it needs relief to cut rather than rub (and then the clearance angle is ground behind that). What is the initial lip relief angle that you are grinding when working the 59º point angle?

Sorry - I'm probably not explaining this very well. Perhaps this will help.


  ch_point.jpg (Size: 33.09 KB / Downloads: 93)