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I'm thinking of it both ways. If it is wider from the side it would be thinner in cross section and therefore more fragile. I'm thinking a narrower bevel seen from the side would have more steel in...

I'm no expert on blade geometry but I believe that a thicker spine, relative to the width of the blade, leaves a steeper angle and a thinner bevel. OTOH, a wider bevel won't necessarily give less of...