革砥は砥石より切れ味が良くなるのか検証してみた
14:38
I verified whether a whetstone or a leather strop makes a better cutting edge.
31:52
包丁に傷を付けずに研ぐ方法
16:36
I made the ultimate leather strop with natural whetstone grit.
33:54
I test the MOST CONTROVERSIAL KNIFE SHARPENER - Horl 3 Pro
19:04
カエリを取ると、、、、、切れる？切れない？宮村流で実演解説！
30:31
[Review] KISEKI: The sharpness of a kitchen knife with hardness second only to diamond | Sharpen?
21:37
[Japanese whetstones] ALTSTONE “rin” and “fukami” two fired whetstones
28:06