I am an old carver, and my fingers just don't have the strength they once did, so changing tools in my chuck grinder with a chuck key was getting more difficult. I needed something I could grip with my entire hand instead of a few fingers. So I removed the chuck key's crossbar and drilled out an old file handle to accept the chuck key. I secured the key into the handle with epoxy, and now I change grinding bits in half the time with little or no joint pain.—Robert Fitz, Bristol, Conn.