This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Tom, There are a few different schools of thought concerning the actual = purpose of the ivory glue wafer. For starters the wafer is a thin piece = of muslin cloth and this makes the ivory appear white, ivory is = translucent and the wafer shows through. The wafer also works as a = medium for holding glue, wood is porous and readily absorbs glue, ivory = is porous and absorbs glue also. So this wafer holds a fair amount of = glue to prevent a glue starved joint. Finally some believe that the = wafer acts as a expansion joint between the ivory and the keystick. I'm = not to sure this theory of an expansion joint is sound. Keys and their = tops do change dimensionally and at different rates with climate = changes but ivory was and still is today glued on with hot hyde glue. = Hot hyde glue has excellent creep and rigidity resistance so this = property lessens that theory if the wafer is saturated with hyde glue. = Mike Morvan Blackstone Valley Piano ----- Original Message -----=20 From: Thomas Cole=20 To: Pianotech=20 Sent: Wednesday, February 02, 2005 1:57 PM Subject: Re: Acrilykey vs glue wafers Does anybody know why glue wafers are used, other than providing a = white underlayment? Are they a buffer between the brittle ivory and = expanding/contracting keystick? Tom Cole Joe Garrett wrote: Acrilykey is not a "glue"! Itr will break down w/age and impact. = Actually, so will glue wafers! The best glue to use for replacing Ivory, = is PVC-E that has a lot of Titanium Dioxide, (ultra fine), added for the = "whitening" effect. Best Regards, Joe Garrett, R.P.T. Captain, Tool Police Squares R I ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/ca/6e/82/3d/attachment.htm ---------------------- multipart/alternative attachment--
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