How do you subdue silicone in a finish?

[Thomas Cole]

I haven't had any luck trying to "neutralize" or wash out silicone oil 
with solvents, including acetone. The usual fix is to put a little 
silicone (fish eye preventer) into what you're spraying.

 I just found an article on line that advises against fish eye preventer 
and advocates ammonia to clean a contaminated surface. It might be worth 
a try.

Tom Cole

William Benjamin wrote:

>Have you tried neutralizing with paint thinner?
>
>William
>
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>
>
>PIANO BOUTIQUE
>William Benjamin
>Piano Tuner Extraordinaire
>www.pianoboutique.biz
>The tuner alone,
>preserves the tone.
> 
>-----Original Message-----
>From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
>Of gordon stelter
>Sent: Wednesday, March 15, 2006 11:21 AM
>To: Pianotech List
>Subject: How do you subdue silicone in a finish?
>
>Dear List,
>     I'm trying to put a  proper decal ( not mailbox
>letters ) on the keycover of an 1880 Chickering. From
>the ripples and fisheyes in the existing lacquer, it
>is evident that prior to being poorly refinished,
>silicone-contining polishes were used. 
>     I wet sanded ( 600 grit silicone carbide with
>naptha ) the existing finish flat, then tried to spray
>a base coat of Deft lacquer, and it fisheyed all over
>again. So I wet sanded it again, and tried spray
>shellac. Same disgusting result.
>     I'm guessing that several really fine "mist
>coats" of shellac or Deft would have to be sprayed, 
>until it creates a seal up over the silicone-permeated
>lacquer underneath. Then decal, then full wet
>topcoats. But I thought I'd ask y'all how you might
>handle this stumper.
>     Thanks!
>     T
>
>
>
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