Hi David,Parts replacement is of course the true solution. My chemical of choice is Protek CPL. Remove the hammer-shank-flange from the rail, soak the bushing with CPL from a hypo oiler, work the flange vigorously, and you've usually greatly reduced the friction to a manageable level. Rebush or repin the recalcitrant ones. Expect that you'll need to repeat this process in future visits, as this doesn't remove the gunk, but rather lubricates and frees up what you're stuck working with. Best wishes & Happy New Year, Patrick Draine On Tue, Dec 30, 2008 at 10:28 AM, Paul Kunz <paulkunz at usa.com> wrote: > Greetings: > > > > I am wondering what the latest recommendations are for severe verdigris on > old Steinway Action Centers. Reaming and repining has never to my mind > been a permanent solution; therefore in the past I have tended to replace > whippens and shanks. However, in a very old Steinway when the customer is > not willing to spend the money, and repining appears to be only temporary > and time consuming, what type of chemical treatment has been found to be the > most effective. > > > > Any suggestions would be greatly appreciated. > > > > Thank you, > > David C. Kunz > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081230/ecd43aa2/attachment.html>
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