This is a very easy, effective maintenance. Please make a strapping board by yourself, seeing the procedure. When you use this board, your knife sharpens for 2-3 years. Please send Japan your knife when not really cutting. ROCKSTEAD is reground it free of charge.However, the shipping back charge is your load.
This is a sand paper retainer of ROCKSTEAD. We use the sandpaper of #2,000 or more large number (grain degree).