I am almost finished with my M. Schulz upright pneumatics. I would like
to somehow soften the hammer felt. The felt is very hard and gives a
slight tinny sound. My tuner softened them up a little using a sewing
machine needle connected to a cordless Dremel tool. He said that fabric
softener could be used but you must be very careful. I didn't press him
for more info on this technique.

The best solution would be to replace the hammers, but this is
currently beyond both my expertise and wallet. Some day I will
re-condition the piano mechanism (lots of homework to do first).

Thanks,
Jeff Lofton