[CAUT] Teflon AND verdigris?

[Mark Cramer]

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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