Fig 44 Filing The Front Or Flat Side Of The Lip Of An Auger

must be careful to make the file rest flat on the bit as illustrated. To raise it would result in a bevel which would cut a hole smaller than the bit. Second, file the spur to an edge. This is done by-holding it as shown in Figure 43A, filing the inside of the spur at the front or cutting edge. By examining the cutting lip of a new auger bit, it will be observed that the cutting lips are shaped like wood chisels, one side being straight and the other beveled.

0 0

Post a comment