Acid rain. ..... 8>) I don't know but I have seen green verdigris on the pins of a teflon action. Maybe it's an expandin action bracket/ pot metal or plating problem. KR On Wed, Nov 5, 2008 at 1:01 PM, Avery Todd <ptuner1 at gmail.com> wrote: > 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 >> > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://ptg.org/pipermail/caut_ptg.org/attachments/20081105/7bee1151/attachment.html
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