Wiley Horne
David,

Regarding the SGPS knife, the Fallknivn factory description says they put a small convex finished edge on the knives. They don’t explain why; the obvious reason would be the added durability you are describing.

I’m glad Bill recapitulated the exact edge geometry, thru the full cycle. This is a very significant idea.

Incidentally, I recall that Tools for Working Wood’s oval-bolstered mortise chisels (made by Iles in England of D2) have a 20-degree hollow primary, with a steeper cutting tip (no buffed finish). I thought that an odd geometry for a mortise chisel, like it is begging to get wedged and stuck—but they don’t. Great minds....

Wiley