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Discussion in 'Observed Trials Discussion' started by ross128, Aug 5, 2004.
i have always wondered, how do they do them? not by any conventional methods i believe.
wtf are you talking about? hub engagement?
Turned to make the overall shape, and then probably a... hmm... 2.5D CNC lathe for the detailing?
are you speaking of the actual gear ring? They might use a tool called a broach, it's pressed through the center of a hole by a hydraulic press, it has cutting edges on it like a tap, but designed to cut in a linear fashion, as opposed to a radial fashion, sort of like an inside out playdoh pumper if you know what that is