Quick Summary
• This octagonal Japanese knife handle is a beautiful upgrade to an old or new blade.
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Additional Context
Drill the ferrule block all the way through with the ⅛” bit. Then drill partway through the same hole with the ½” bit, leaving 3/16″ of material at the bottom of the hole (this will actually be the very top of the handle).
Drill the body block with the ⅛” bit to a depth of about 1″. This pilot hole will help the ½” bit remain on center. Now drill the ½” hole to a depth that the tang of your blade will fit when everything is together.
Using the step drill bit, drill the copper spacer up to ½”. Don’t press too hard on it, you don’t want to deform the soft copper and have to flatten it again. Deburr the hole after drilling.
This ½” hole is where the brass tube will be glued into place, acting as a tenon to strengthen the handle and hold it together during shaping. It’s also the cavity whic