We asked him that and he said he didnt have time to get into that. I may be going down there this spring for a week, so I will be able to find out that and a few other things. I would suspect tho, that they are sanding in the immediate vicinity of the edges they want to remain stiff. RicB Calin Tantareanu wrote: > 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. > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html http://www.hf.uib.no/grieg/personer/cv_RB.html
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