Well thank you. I like that dog! I need to cut gears that slide onto a shaft, so I won't have an integral mandrel. They take a bushing later and have no keyway. Any suggestions as to how to prevent rotation on the mandrel? I have a couple ideas, but ideas from a seasoned vet are always welcome. I thought maybe punch a keyway for use in this operation. I don't have broaches though. That leads me to perhaps drilling a hole in the gear for use in some kind of dog set up. Might hand file a hole into a keyway, but I hate for that to show after I bush the gear later. To me it would look like a screw up. Thank you for your help, and forgive me for threadjacking.