I don't find I have to seat strings more than once...possibly because our climate is so mild. I'd like to know what kind of pressure in lbs or such is happening from expansion of the bridge against the strings? How much pressure comes from a light tap? David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "David Love" <davidlovepianos at comcast.net> To: "Pianotech List" <pianotech at ptg.org> Received: 9/8/2006 9:01:02 AM Subject: RE: Bridge Seating (was Re: Where to notch a bridge,& relative effects ????? (Advice sought) >Crushing the edge of the notch by either tapping down on the bridge too hard >or because the cap is too soft to begin with will create a bridge cap that >is not flat and dips down and away from the pin. Combine that with >expansion and contraction of the bridge cap and the pressing of the string >between the pin and cap during expansion periods and the shrinking of the >cap during contraction periods will cause the string to unseat. Pushing the >string down may temporarily seat the string back on the bridge. However, >with the edge crushed it is not likely to stay there and pushing down with >your thumbnail is just as effective as tapping it down. The difference is >that you can exacerbate the problem by tapping too hard. You are not likely >to do that with a gentle massage. Either way, the string will not stay >there for very long and more vigorous tapping will not help. >David Love >davidlovepianos at comcast.net >www.davidlovepianos.com >-----Original Message----- >From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf >Of Ric Brekne >Sent: Friday, September 08, 2006 8:18 AM >To: pianotech at ptg.org >Subject: Re: Bridge Seating (was Re: Where to notch a bridge,& relative >effects ????? (Advice sought) >I cant speak for others of course, but for myself I can say that I have >done exactly all these things... <snip>
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