Hi,  This is my first post so hope it is correct.  I have recently
started on restoring the 65/88-note Themodist from an early Steck
piano.  Every single one of the pneumatic cloth bellows were cracked
and falling to dust.  I have now completed the top deck pneumatics
(all 29 of them) and hope to attach of them back to the rail.

When I dismantled them, there was this purplish colour of gasket left.
I am wondering what gasket material and glue I should use.

I tried an experimental glue-up of (home made) burnt shellac on some
spare wood; it made a right mess and took a couple of days to go off.

When I pulled at the joint, it came apart quite easily, so next I tried
putting a gasket of blotting paper in, and using hot animal glue.  This
seems to really do the trick and I haven't been able to pull it apart.
So I am thinking of using for the pneumatics, blotting paper gaskets
and hot glue.  It looks as if it will be airtight.  Anybody's comments?

Regards
James Harrap
Brisbane, Australia