The only thing I remember from a woodworking course I took 40 years ago was that to properly sharpen a chisel you must first hollow grind the cutting face on a wheel and then sharpen on a stone. When you're on the stone only the tip and top of the cutting edge contact the stone.

The GW tool would work after hollow grinding but we did it by hand.

OTOH I'm a wood butcher....


My problem lies in reconciling my gross habits with my net income.
- Errol Flynn