Yeah I know the design. I've probably worn out 30 or 40 of em over the last 40 years or so. A round knife/head knife has 2 points, one at either end of the crescent. If your flat is on the left side and that is where your straight edge is (bevel on the right for pushing the leather away from your cut) you will never use the upper half of the blade. Unless you are ambidextrous. The top half of the blade is ground for a lefty, the bottom half for a right hander, with this chisel grind. That's part of the advantage of the round knife design is that basically you always have 2 edges that can be used, rotating it over before having to stop to strop your edge. Also there should be a slight rocking motion with the cut, also part of the design, ending towards the point. The points are used to cut curves. The tighter a curve the more to the point ya go. So with a chisel grind flat to ride against the straight edge you would only ever use half the knife. The side with the point down. There's kinda my confusion. Now I'm not saying this is a bad deal but how about more of a tear drop design with only one point, kinda half of the crescent. I've seen and used those before but without the chisel grind. I like the out of box thinking. I'd like to see how it works. If ya want to build a head knife that leather workers would really love, start with thinner stock and do your half inch bevel (or more) on both sides. Most store bought round knives are too thick and have too steep a bevel.
