Hi Richard ! Where ob the board does Steingraeber remove material from to get the sand to accumulate on the edges? Calin Tantareanu ---------------------------------------------------- http://calintantareanu.tripod.com ---------------------------------------------------- ----- Original Message ----- From: "Richard Brekne" <Richard.Brekne@grieg.uib.no> To: "Pianotech" <pianotech@ptg.org> Sent: Monday, October 20, 2003 5:49 PM Subject: Re: Soundboards: Thickness and Area > > They spread dark sand on the panel and then pound a bit on the bridge to > see where the sand settles. They remove material from the soundboard > until the sand accumulates in a very clearly defined thin boarder line > about the edges of the entire soundboard. They are particularily > concerned with the K point area which corresponds to the area in the > treble where the so called killer octave phenomena occurs. But all > around the edge of the soundboard they want a precisely defined line of > sand.
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