Can you help with an inquiry from a friend of mine who is restoring
a Wilhelm Bruder fairground organ, 62 keyless: what should he use
to surface the main chest under the pallets?

There was a thin cardboard there before, but damaged.  He re-lined with
a similar cardboard, but it is leaking air from some pallets and has to
be redone.

He used hot glue and he glued the cardboard and let it dry before he
glued it into position.  I thought that you might be able to offer some
advice.

regards

Rod Cornelius