Can the Domino cutters be resharpened?
Domino cutters can be resharpened as many as three times. After three sharpenings they become too short to mortise the necessary depth. Domino cutters will bore between 4,000 and 15,000 mortises before they require sharpening. On average, 4,000 mortises into end grain on hardwood, and 15,000 mortises into side grain on soft wood.