Petty knife: Furutsu

I made this knife as a petty knife for the Kengata Santoku I made some weeks ago. This was a gift for my mother, too. Most focus was on the profile of the blade to make it similar to the large chef’s knife. The handle is a bit thinner than on the Santoku, as the knife should be more nimble to work with and match the smaller blade. I used the same stell, a 2mm thin 01-tool steel.

My blogpost how I made this knife.


  • Steel: 1.2510 or 100MnCrW4 or O1-Stahl
  • Length: 215 mm
  • Blade length:  105 mm
  • Blade width: 37 mm
  • Blade Thickness: 2 mm
  • Grip: Ziricote wood, treated with linseed oil
  • Liners: self-made paper micarta liners in grey and white
  • Pins: three 5 mm steel pins