---------------------- multipart/alternative attachment In a message dated 10/17/2003 8:15:19 PM Pacific Daylight Time, Crashvalve@aol.com writes: In a message dated 10/17/03 10:51:55 PM, Erwinspiano@aol.com writes: If you took out the old boards in 5 Steinways of any give model you'd find some way thicker or thinner than the others but with a general range or parameter. I've measured a 70's CD S&S B with a soundboard max. thickness of .310 in the middle as S&S & other are generally thinned around the edges for flexibility (diaphramized as S&S says) That would be considered thin for a B. On the other hand I've seem them as thick as .375 ish. The thin one sounded totally awesome & I was surprised it wasn't a "thin" sounding piano. In my work I'd be using Sitka panels & opt for something about .340 to.360. For smaller models thinner is fine, .300 to .325ish. By the way You own an A I'm told & I've found it common for them to be .350 ish. Ds & Mason BBs can be as thick as .400. Not sure this more than incidental trivia but you asked. Regards--Dale Erwin Dale, have you ever tried to measure board thickness on a board in place ? I expect it could be easily and very accurately done with a depth mike whose spindle is cut down a LOT, but this requires drilling a hole in the board. Regards, Glenn Coleman Glenn ,Yes I have & you are correct. First it's possible to take measurements around the bolt holes with a wire caliper. 2nd small holes drilled behind the bridge or around the edges & later filled with a toothpick is kosher, but why would you wish to do this? I've done this only once & that was to diaphramize a very thick board in a Yamaha C-7. I also refinished the board afterwards so no big deal. The board was .400 thick in the middle and tonally a bit stingy. Thinning it helped to reveal a more lively tone i.e. better sustain. Regards-Dale ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/e8/c3/99/bd/attachment.htm ---------------------- multipart/alternative attachment--
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