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Of course factoring in a +/- 1~2 degrees is acceptable I assume as much for everyone's calculations.

Even still, his edge angle is rather low comparatively speaking.

Going from measurements of one of Bill Ellis's customs:

Blade width 6/8
Blade thickness 5/32

Edge angle 11.88 degrees


I would assume that if sharpened with one peice of tape 0.2mm thick...

Vintage J.A. Henkels ................ 4mm x 11.5mm = 19.74 degrees

Buddel Suminagashi Custom .... 5mm x 19mm = 15.00 degrees

TI Le Canadien ........................ 5mm x 17mm = 16.74 degrees...