I was looking through the archives on bellows rejuvenation and found
that John Tuttle had asked a similar question to mine six years ago
and has had no response, so here goes again.

Is there any chemical that can be applied to the outside of bellows
material to keep it soft and supple without damage to the material?
I have just replaced the valves on a harmonium roll player and it works
well now, but while the player is apart I am interested in rejuvenating
the bellows material, which still appears to be good.  Any new ideas on
the subject?  Thanks.

Michael Pawelek