This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: ANRPiano@AOL.COM=20 To: pianotech@ptg.org=20 Sent: March 25, 2002 7:31 AM Subject: Re: Floating soundboard From what I can make out of Over's picture, it looks to be a cut out = no wider than the thickness of a saw blade. It is hard to see, but it = appears that there is soundboard material on the rim side of the cut. = Am I seeing this correctly?=20 Probably. I'm not sure of Ron's procedure, but we install the soundboard = per normal practice, then use a small trim router to free the area we = want cut away. Am I correct in assuming the reinforcing braces are under the soundboard = and on the soundboard side of the cut? How large of an area do you = remove? Are the braces anyway attached to the rim, ribs, or ...? Are = you saying the ribs are a key limiting factor in the size of the cut?=20 What reinforcing braces? As mentioned earlier I do sometimes use an = 'artificial rim' on the inside of the cut. That is, a curved reinforcing = bar mounted just inside of where my router bit will run. I also = sometimes use a cap on top of the soundboard, again just inside of the = cut. It depends on the piano and what I'm trying to accomplish. The length of the cut varies from one piano to the next. The width of = the cut is either 1/8" or 1/4" depending on the router bit I use. There = doesn't seem to be any difference in performance between the two. The ribs are surely one limiting factor in the length of the cut--we do = not cut through the ribs--but not the only one. Again, it depends on = what I'm trying to accomplish.=20 Years ago I rebuild a very small grand, (whose name escapes me) which = had a rather sizable area removed directly behind the bass bridge. The = area being probably about 15 square inches. Incidentally the plain of = the soundboard sloped down toward the bass about 2 inches from the belly = rail. I had never seen such a set up, nor have I since.=20 Hallet & Davis, perhaps? Someone with one of those double names did what = you describe, except the pianos I encountered were primarily designed to = releive the area around the end of the tenor bridge which otherwise came = quite close to the inner rim. Del ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/f7/78/db/11/attachment.htm ---------------------- multipart/alternative attachment--
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