[pianotech] Of Chisels

[jimialeggio]

>
>
> Sharpening a chisel well means sharpening BOTH sides of the chisel
>

agreed...the back, flat side of the chisel or plane blade (except in 
some styles of bridge notching chisels which are curved or beveled ) has 
a tendency to get lost in the "well that's too easy to think too much 
about" department.  But getting that back dead flat and mirror finished 
is one of the things that Japanese chisels allow one to (ah... sorry) 
hone in on, shall we say. With their relieved back surface it makes it 
easier to achieve that flat back plane.

Paying attention to how to create a dead flat honing surface capable of 
bringing  your back up to mirror flatness pays off in terms of blade 
sharpness and longevity, at least that's the take that finally really 
worked for me and that I settled on.   No machines, but a Veritas honing 
guide, coarse 120 grit diamond stone for coarse work and water stones 
for finish work, with the water stones lapped on the diamond stone to 
true-up.

Jim I


Jim Ialeggio
grandpianosolutions.com
978- 425-9026
Shirley, MA

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