No matter how 'gently' i try, i have never been able to put a cut centre pin back in a bushing without knocking out the cloth! I would not recommend trying this to anyone (unless they really want practise at re-bushing flanges!). Scott Jackson Australia ----- Original Message ----- From: "Paul Chick (Earthlink)" <tune4@earthlink.net> To: "Pianotech" <pianotech@ptg.org> Sent: Saturday, July 19, 2003 10:07 AM Subject: RE: Flange Center Friction Increase | Terry | Isaac Sadisgursky talked about this in his class on center pins at the | Convention. He demonstrated how a center pin can be too tight in the | bushing cloth and loose through the wood, just the opposite of what it | should be. This problem can be spotted as you describe--fewer swings as you | go along. Here's his test: carefully remove the center pin from an | offending flange. Gently place it back in the bushed flange and check the | friction just by pushing the pin with your fingernail. Now place the same | pin in the wood and push it with your fingernail. Chances are you can push | it right through the wood. The problem is caused by using the assembly wire | used in the flange to size the bushing cloth during manufacturing. When the | flange is installed, the worker slides the wire back to clear the other | member then slides it through and cuts it to length, fitting done. Isaac | says to watch for centers that are clipped on both sides of the flange. | This will tell you a wire had been used. He then went on to demonstrate how | to repin a set of flanges in about 45 minutes. | Paul C
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