Hello MMDers, I have been breaking my brain over a question I've had
for the past few weeks but forgot to post: is there any way to acquire
an Ampico, Duo-Art, or Welte-Mignon style rotary vacuum pump?

If anyone knows if there is a company making them or if anyone makes
kits, then please email me. I'm thinking of replacing the suction box
that I have with a rotary pump (if I can squeeze it into the bottom
of the piano).

Piotr Barcz