Hi All,  When I repaired my first player piano in 1970, with the aid of
Larry Givens book, I went looking for rubberized cloth at a local
hardware store in the little town of York, Nebraska. When I explained
to the owner how I was going to use the cloth, he said it sounded like
I needed "nainsook" or raincoat material. Fortunately, being in the
heart of corn country, he had a number of different thicknesses of
relatively inexpensive air-tight materials that worked fairly well, and
I got the player working in about a week.

A few years later, when I decided to work on player pianos for a
living, I called American Piano and asked if they had any nainsook.
Somewhat to my surprise, they knew exactly what I wanted - striker
pneumatic cloth.  And, so began my journey into the realm of player
piano terminologies.  Forty years later, I discover yet another
terminology that I had never heard before; tosh. I wonder if 'tosh' was
available in the US back in the 60's? I know raincoats have been around
for a long time.... ;-)

Musically,
John A Tuttle
Player-Care.com
Brick, New Jersey, USA