Originally Posted by
steven c newman
All of my SW (1920s era) cutters are not tapered. They also have a slight curve to them, that flattens out as I tighten down the cutter holder. The curve presses the back of the cutter into the skate....almost like a chipbreaker was pressing the iron to the frog on a bench plane....
There isn't a groove in my cutters, maybe there was on the old, wood bodied ploughs, had to have something to keep things lined up in them. Their skate was ground to a knife edge, to fit the groove in the iron. The 45 needed no such groove. Maybe go back and take another look?