[CAUT] Teflon AND verdigris?

[Avery Todd]

I don't understand how there can be verdigris on teflon. I thought that was
always a felt/wood/parrafin thing. Can someone enlighten me?

Avery Todd
Houston, Tx

On Wed, Nov 5, 2008 at 1:46 PM, 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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