Looks like an interesting tool to me, in fact I've ordered one. There seems to be a big deal made over the razor blade jigs. Looks simple enough, sandwich a blade between 2 pieces of wood and cut. I've spent a lot more time on making jigs that do far less refined work . As far as my uses for it go, I see it as complementing my BCTW Jointmaker in making banding for boxes and possibly some detail inlay on furniture.