With much help I am in the process of rebuilding and restoring an
'O' roll buildup orchestrion which has not been played in many years.
It currently uses a standard player piano spoolbox, slightly extended
in depth to play the 'O' rolls, which have had to be re-spooled onto
88-note piano cores and then some giant 3.5" diameter spool ends used
(which I understand may be from a type of Ampico roll).

Obviously this is rather unsatisfactory as I have no further supply
of these oversized spool ends, and so any new 'O' rolls I purchase are
unplayable unless I split them in half.  Not something I wish to do.

So my question is: is it still possible to purchase an 'O' roll
spool frame and roll chuck assembly?  The buildup uses a suction box,
not a mechanical pump, so it would presumably really need to be a spool
frame using electric drive, as I gather some built by PPCo did have.

Does anyone out there have such a thing going spare, or know of such
a thing still being built?

Many thanks.
Nicholas Newble, UK