John R. Lupien writes>
> Gears are easy - you can cut them on most lathes, without any CNC. Cams,
> cranks, & so on are much tougher.
You can cut gear BLANKS on a regular lathe. To cut the teeth, you need a hob.
A simple straight-cut gear you could do on a milling machine with an
indexing head and a mill shaped to fit the required profile. I suppose
you could hog out the teeth on a shaper, if you can still find one of
those obsolete machines. Hard to believe most indexing heads could take
the strain, though.
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