[techhelpbb]

"The Home Shop Machinest" ran some articles on using slitting saws on small CNC Sherline size tools to make aluminum gears. I can dig out issue numbers if someone wants.

If one has an old metal shaper one can also make a carbide cutter for gear teeth for the clapper. Course shappers only cut on the forward stroke so...dead simple tooling...but you pay for it in 40% more cutting time.