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Thanks mate! I did some detective work on the gears. Based on the number of teeth and the (estimated with calipers) pitch diameter, i realized they were common metric sizes. (Which ones are evading me right now since i didnt make a note at the time.) From there, I mated them in cad using their circular pitches with about a 2 to 3 mil offset between them to make space for the gears to ride freely, rather than gnarl against each other. That 2 to 3 mil offset is critical; otherwise, the gears will grind from being too closely spaced together. I hope this helps!
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