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@JOAT
The importance of flattening the back of the chisel is to make sure the knife edge, after sharpening the bevel, has a straight edge...see pic below...
Imagine if the back were not flattened (gray area in the pic)...the sharpened edge would not be straight.
The importance of flattening the back of the chisel is to make sure the knife edge, after sharpening the bevel, has a straight edge...see pic below...
Imagine if the back were not flattened (gray area in the pic)...the sharpened edge would not be straight.
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