Why would that be necessary? The key goes in the clamp with the keytop side down to the flat wooden surface (usually covered with a piece of felt so as not to scratch the keytop) so the direct pressure from the spring is on the bottom of the key. The span of the keytop is short enough to preclude any flexing from pressure in the middle. The wooden bar to which the springs are attaché is raised just slightly off the surface of the platform, just enough that the lip of the keytop can slide under it and the front is then pressed up against the wooden bar to insure that the front is clamped as well. David Love www.davidlovepianos.com David Love's simpler spring clamps should work just fine. The only change I would make to that system if I made it would be to raise the clamp bar so you could fit a relieved caul under the clamp. A relieved caul does not contact the key in the center portion of the key, only at the ends. That way the pressure applied by the spring at the center of the key is actually applied at the front and back of the key/keytop not the middle. Jim I Grandpianosolutions.com(almost launched) -------------- next part -------------- A non-text attachment was scrubbed... Name: P7120072.jpg Type: image/jpeg Size: 44791 bytes Desc: not available URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100101/e6e93139/attachment-0001.jpg>
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