Silicone creep

[Mike Swendsen]

The only solvent that will clean silicone is naphtha......
try that and you might be able to glue the parts....
maybe

C. Mike Swendsen
-----Original Message-----
From: BSimon1234 <BSimon1234@aol.com>
To: pianotech@ptg.org <pianotech@ptg.org>
Date: Sunday, March 15, 1998 7:51 PM
Subject: Silicone creep


>
>Don Mannino RPT wrote:
><<Please note - Silicone creeps, and likes to walk away from the action
>center. Although I have never found an affordable way to prove this>>
>
>It has been done! - I once knew a company that made built-up fiberglass
parts
>in moulds. They began having an unacceptable parts failure rate and though
it
>might be a silicone mold release used in another part of the building
>contaminating the parts. They put an invisible  dye into the silicone that
>glowed bright purple when exposed to ultraviolet light. A week later, at
>night, they shut the lights off and went around seeing what "glowed". Darn
>near everything that workers touched, glowed. It was found that a little on
a
>workers hands was carried and deposited on everything he touched, which was
>picked up by others and deposited elsewhere, etc. Silicone residue was
>everywhere, and everywhere where it was not supposed to be, and in the
>recently made bad parts. They did a major washdown of surfaces, bought some
>new equipment to replace contaminated, and stopped using the silicone.  The
>parts failures stopped.
>
>I have also wondered just how well can one glue parts back together that
have
>been "lubricated" with silicone. I don't think they glue very well at all.
>
>Bill Simon
>Phoenix
>