Woodworking hole opener is not fast how to grind

1, remove the drill bit, hold the front end of the drill bit with one hand, and hold the back end of the drill bit with one hand.

2, the cutter of the drill bit against the upper part of the grinding wheel piece, the cutter and the grinding wheel piece should be kept parallel to avoid grinding the drill bit.

3, start grinding the drill bit, holding the back end of the hand small up and down until grinding is complete.

4, stop the machine to change the other side of the cutter grinding.

5, sanding the cross blade can be.