Problem w hand filing a rack is knowing if its correct or not.
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Construct a ruler w/ compass and straight-edge, measure tooth height and root spacing, compare the profile to a constructed template?
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Screw threads aren't really math-y enough for that, I think. It just comes down to wrapping a triangle on a cylinder however's convenient.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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It's kinda like the three seashells...
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