Another little experiment to do that might give a bit of food for thought for some of you, is to put a penny (edge up) on say.... middle C strings right by the aggraffe. Then bang on the key with a medium hard blow. Gives you a good idea of the kind of vibrating forces we are talking about. Do the same thing with the penny at the bridge. -- Richard Brekne RPT, N.P.T.F. Bergen, Norway mailto:rbrekne@broadpark.no
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