Whetstone, then strop: a two-stage routine
A serpette knife with a 7.5 cm blade needs little metal removed if it is kept up regularly. Two stages cover it:
- On a medium whetstone of around 600 to 1000 grit, work the inner curve with the stone's edge at about 20 to 25 degrees, using short strokes from heel to point.
- Count your strokes and give each face the same number, so the edge stays centred.
- Move to a fine stone, 3000 grit or so, for a few lighter passes.
- Wrap a strip of leather loaded with polishing compound around a dowel and strop the curve with the edge trailing.
- Between sharpenings, a few strop strokes after each session revive the edge.
