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  1. M

    Gear cutting..........confused

    Hi all I,m in the process of making the Topsy Turvy H&M engine. I'm trying to figure out how to cut the 44 tooth spur gear on my dividing head (40 to 1 ratio). I've figured out how to cut the 22 tooth (1 turn and 27 holes on the 33 hole plate). The 44 tooth set up I've come up with is .9 turns...
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