I want to make up some gears and need to cut 15 or thereabouts 3/16" keyways in a 7/8" bore, the bore being around 1" long. I have a shaper, so could make up the appropriate tool and cut them on it. I also was looking at a lathe mounted (hand powered) reciprecating tool used for engraving graduations and wondering about adapting that. I have no room for a press, so broaching is not a possibility. Anyone have any other methods that are worth sharing?