[CAUT] Teflon AND verdigris?

[Keith Roberts]

I've been trying some of the quick evap, leaves no residue, safe for
plastic, electronic parts cleaner. It doesn't seem to harm the felt and
dissolves the years of gumminess away. The little red tube that comes with
the can fits perfectly against the side of the flange bushing. It's a
pressure clean and gone so quick, the time factor would minimalize glue
damage???  For felt bushings, I treat with protech after. They sure look
nice and clean and work much smoother. I'm not sure what effect the cleaner
has on the wood. Couldn't be worse than the protech.
Keith

On Wed, Nov 5, 2008 at 11:46 AM, Mark Cramer <cramer at brandonu.ca> wrote:

>  Regulating a 63' Teflon action L for a good friend, I was surprised to
> find verdigris at the hammer flange centers.
>
>
>
> This is a solid Teflon action with nice firm centers and no clicks, however
> with verdigris, hammer-flange friction in some cases exceeds 10 grams.
>
>
>
> Steinway warns against lubing Teflon parts, nonetheless I have to wonder if
> there is some Q & D means of easing the verdigris without damaging the
> teflon?
>
>
>
> I know that whether we properly disassemble, clean, ream and re-pin the
> parts, or simply squirt in a bit of miracle juice, the verdigris will come
> back. However, something that will extend the use of these otherwise
> moderately worn parts, is entirely appropriate for this particular piano.
>
>
>
> Given the recent discussion of lubing key-bushings, I'm just concerned that
> the solvent/carrier in CLP for instance may dissolve/harden the Teflon,
> while perhaps ProLube may not?
>
>
>
> Anyone know for sure?
>
>
>
> Thanks,
>
> Mark Cramer, RPT
>
> Brandon University
>
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