I’ve been thinking about making my own steel wedges for tool handles for a long time, but figured that the ridges would be time consuming. Just last night, I realized that an old farrier’s rasp would make great wedges. The rasp teeth face one direction, and will be like snakes’ teeth, which only allow its prey to go one way. I tested my newly acquired 7 inch angle grinder on this project. I had a grinding disk, and instead of cutting the section off the rasp, I ground it to a taper, which finally severed the piece. I did this on the back side of the rasp, as seen in picture 2.