Repair for nicks and shape
Grain degree # 2000 ` # 10000
Whetstone
* Grind stone should absorb enough water until air bubble will not come out.
Abrasion of all scratch and sharpening blade
Abrasion of big scatch and smoothing blade tip
Grain degree # 700 ` # 1200
Grain degree # 180 ` # 300