Damaged Blades
Damaged cutting edges and broken tips are no reasons to discard much-loved knives.
Finely ground, very hard Japanese knives in particular can suffer an occasional nick when handled roughly, but this can be fixed.
Place the blade perpendicular to the stone and grind the entire length of the cutting edge down to the damaged spot. The bevel can now be ground onto each side of the blade in the desired angle using coarse-grit followed by fine-grit stones. Proceed as though sharpening with bench stones.
Expert Knowledge
As the material thickness of the blade increases parallel to the cutting edge towards the back of the blade, the bevel surface increases while the cutting angle is maintained, the more material has already been removed. Especially after repairing a notch on the cutting edge, the surfaces of the bevels are often more than twice as large as before the repair. This is necessary to restore the optimal cutting angle.
For the required heavy material removal, use a stone with coarse grit 220 or 400, a coarse diamond sharpening block or a wet sharpener e.g. Tormek T-8 (No. 716034) or Shinko (No. 716020).
Tormek T-8 (Nr. 716034)
