> In relation to the organ work I've witnessed, it's glued using PVC
> glue, which is possibly why Mr. Bullock used the adjective "dreaded"
> in his text (or was that because of it's close kinship to Perflex? ;).

I used the term "Dreaded Polylon" because I have spent more time in the
last 15 years RE-Restoring instruments rebuilt with Polylon/Perflex than
I have spent restoring original leather and zephyr untouched instruments.

These include pipe organs that were rendered useless in less than 12
years by the unholy holes in Polylon creases.  I have replaced Polylon in
red, yellow, blue, purple/gray, black and several others.  I have samples
of the cloths I took off after 5-12 years of use and they all show the
poly falling off the nylon at all creases and corners.

The only Polylon I have not yet had trouble with is the solid purple both
sides that American Piano Supply sells.  I was talked into using it by a
previous boss, but I no longer use it.  I only use what I have left to
seal seams, holes, etc.

I am tempted to use it in the 1907 Apollo Melville Clark with spring wound
roll drive now in my waiting list.  It has those funny little popsicle-
stick pillow pouches.  This is the first unit where the player was
installed into the piano and called the "inner player", and later player
piano.

Yes, PVC glue is obnoxious to get off, but I just submerse the glued item
to be re-restored into Lacquer thinner until I can easily rub the PVC_E
off the pieces with my fingers.

Ask me why my shop never uses any plastic of ANY kind.  We use no modern
materials that have not been tested for at least 50 years.  No contact
cement...it falls off in 5-10 years and turns dark brown, too.  No hot
glue guns, except for hanging hammers, but none of it stays in the piano.
Very little PVC-E glue.  No polyurethanes,  it rots the wood from the
inside out.  The answer is we have to stand behind our warranty for five
years.

Now you all think I am crazy, don't you?

D. L. Bullock   Piano World  St. Louis

 [ Well, it takes no more effort to do a good job than a bad job, when
 [ you know what the goal is and how to get there.  Satisfied customers,
 [ years later, are the proof!  -- Robbie