Jim & Richard: if the wood is soft, how about reinforcing that back with as thin a piece of hardwood as you can get away with. Perhaps a piece of hard maple resawn? Then add additional new bolts. What do you think? Jim Coleman, Sr. wrote: > Hi Richard: > > This is a very common problem with the Janssen pianos. They didn't > always have the thru bolts in the best places and also the back > > material was soft wood and would crush, thereby losing its support for > the joints. You will need to put in extra bolts to secure the repair.
This PTG archive page provided courtesy of Moy Piano Service, LLC