Whenever I see a request for parts I always have the same question,
which is about the viability of 3-D printing, a.k.a. additive
manufacturing, to produce such parts.  The horological community has
lost any interest at all in 3-D printing, probably because the ads
always seem to show poorly-detailed soft-plastic dolls and vases rather
than any sort of viable machine parts.  But it's difficult for me to
believe that the art and mystery of 3D printing hasn't improved over
the last few years even if their advertising people seem to think the
world is in need of improved measuring cups.

Does anyone here have any experience with 3D printing for player piano
or music(al) box parts?  When I wanted a plastic gear for an electric
clock last summer I talked to one firm which does this sort of work,
but when I tried to figure out what the resolution was I never got
a straight answer.  And it turned out that though they said that
one-off jobs were okay, they kept asking how many gross of clocks
I wanted to manufacture.

But supposedly they can manufacture parts in metal and strong plastics.
Does anyone know how, or where, or if?

Mark Kinsler
https://tinyurl.com/sxckd67  (Amazon author page)