This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hello Ron and all. Let say we want to make a vertically laminated long bridge with nine 3.6 = mm thick laminations. That will give you a bridge about 33 mm wide. The = figure below represents unbent laminations in the area of the = troublesome (for me anyway!)dogleg. What about laying up the laminations = as below, having let's say five (whatever in reality) laminations be = continuous through the dogleg, and the others terminate on either side = of the dogleg. Bend gently (never any more bend needed than in the = sections not at the dogleg), glue, and then trim the normal-looking = dogleg curves with bandsaw and sand. You've got a large overlap at the = dogleg, I can't imagine there would be any loss in strength - not = torturing the maple laminations, perhaps there would even be an increase = in strength. As long as we are not interrupting the "circle of sound" = (heaven forbid!), I should think this would ease the task of = dogleg-making, allow the use of thicker laminates, and give you complete = freedom to make the dogleg dimensions (curve radii) any size you want - = you will be simply cutting these cosmetic curves rather than having the = curves originate from the integral bend. Heck, be a radical - leave them = squared-off as plate configuration allows!!!!!!!!! __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ _________________________________________________________________________= ________________________________________ _________________________________________________________________________= ________________________________________ _________________________________________________________________________= ________________________________________ _________________________________________________________________________= ________________________________________ _________________________________________________________________________= ________________________________________ _________________________________________________________________________= ________________________________________ = _________________________________________________________________________= ______________ = _________________________________________________________________________= ______________ = _________________________________________________________________________= ______________ = _________________________________________________________________________= ______________ =20 Waddaya think? Terry Farrell ----- Original Message -----=20 From: "Ron Nossaman" <RNossaman@cox.net> To: "Pianotech" <pianotech@ptg.org> Sent: Saturday, April 19, 2003 10:01 AM Subject: Re: Bridge Construction Method >=20 > >Short of interrupting the "circle of sound", is there any good reason = that=20 > >each vertical lamination in a long bridge root needs to be one = continuous=20 > >piece of wood? Is there a problem if they are two or three pieces to = gain=20 > >some other advantage? (I've got something up my sleeve.) > > > >Terry Farrell >=20 > Other than making it easier to control the laminate stack while = handling it=20 > and pressing it into the cauls, I don't know of any. But then, you = could=20 > always horizontally laminate one from that scrap too. >=20 > Ron N >=20 > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/1b/76/f5/b5/attachment.htm ---------------------- multipart/alternative attachment--
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