Yes, thank you. I'd be interested in more photos. William R. Monroe William R. Monroe wrote: > >>How long do you find you need to leave the dampers clamped for this >>"winged profile" to hold? Have you ever had problems with the >>dampers not retaining the profile? JD wrote: > > It depends on the temperature and the air circulation, but I might > leave the strip in the screw clamp for two or three hours and then > transfer it to the simpler clamp > <http://pianomaker.co.uk/damper_pictures/dampers_1.jpg> after > applying the backing cloth and leave it there another few hours. > This second clamp is a simple board of mahogany with a straightened > clock-spring set into it, and for most pianos, which don't require > the bump at the top shown in the illustration, I just use a single > top lath and 10 Pony clamps. It's all pretty primitive but it works. > As to the felt's retaining the profile, so long as the PVA glue has > passed the rubbery stage, the profile will first open op just a bit > and then hold. If you underdo the clamping and the felt begins to > flatten out, you just clamp it for a bit longer. The thing to avoid > is leaving it in the clamp until the glue is thoroughly set, because > then you get too pronounced a V. > > I'll be doing the dampers on a Bechstein Model C grand this week and > will take some more pictures. > > JD > > >
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