the first step would be to get a model made out of graphite or copper to use with a EDM to make a mold, the next step is to injection mold the gear, you could use epoxy or just a thermoplastic, problem is that EDM hours arent cheap and it takes a good bit of time to errode a form like this
Chuck Harris <cfharris@...> wrote: Casting is definitely the way I would go if I couldn't
spec that universal drive gear set.
I have made some pretty decent low speed gears using
JB Weld and a silicone mold. And there are better
casting compounds available.
-Chuck Harris
d.seiter@... wrote:
This probably wouldn't work due to shrinkage, but if there isn't much load on the gears, couldn't you cast a
replacement with a very short fiber filled epoxy? Assuming you had a set of good gears to start with.
-Dave
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