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<DIV>Shawn:</DIV>
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<DIV>We've used cold hide glue in key bushings forever, it seems :-). With terrific results. We use Spurlocks sizing cauls, then the brass cauls from Pianotek for installation. </DIV>
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<DIV>Paul</DIV>
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<DIV><STRONG>"If you want to know the truth, stop having opinions" (Chinese fortune cookie)</STRONG></DIV></DIV>
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<DIV>In a message dated 06/11/07 23:58:36 Central Daylight Time, shawn_brock@comcast.net writes:</DIV>
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Hey William, <BR>thanks for sending this out. I for one will look it up! Your correct it <BR>will be a interesting read! Brings to mind a question, have you or anyone <BR>elts used cold hide for key bushings? I have just used hot hide but it <BR>seems cold hide would bee less messy. Thanks again. <BR>----- Original Message ----- <BR>From: "William R. Monroe" <pianotech@a440piano.net> <BR>To: "Pianotech" <pianotech@ptg.org> <BR>Sent: Monday, June 11, 2007 8:02 PM <BR>Subject: glue strength <BR><BR><BR>> Hello List, <BR>> <BR>> Interesting reading in the most recent Fine Woodworking magazine. The <BR>> editors tested the following glues: <BR>> <BR>> Type I PVA (Titebond III) 100% <BR>> Slow-Set Epoxy 99% <BR>> PVA Glue (Elmer's Carpenter's Glue) 95% <BR>> Liquid Hide Glue 79% <BR>> Hot Hide Glue 76% <BR>> Polyurethane Glue 58% <BR>> <BR>> The percentages are the average strengths of the various glues, relative <BR>> to the strongest glue (Titebond III). These glues were tested for <BR>> strength using a bridle joint (picture one board with a slot cut into the <BR>> end, and a second board with a tongue that fits into the slot - boards at <BR>> 90 degrees to one another). The tests were done for three different joint <BR>> fits: <BR>> <BR>> Tight, Snug, Loose <BR>> <BR>> The tests were done using the following woods: <BR>> <BR>> Oak, Maple, Ipe <BR>> <BR>> The glues were then ranked by averaging joint strength for all the <BR>> situations, and the results were enlightening. I've listed them in order <BR>> of strongest to weakest above. <BR>> <BR>> Of particular interest to me were the results of Cold Hide vs. Hot Hide. <BR>> Based on Average strength, Cold Hide beat out Hot Hide glue (Cold Hide <BR>> rated 79% of the #1 glue's strength while Hot Hide rated 76%). Hot Hide <BR>> apparently lost a lot of ground in the snug and loose Ipe joints, but the <BR>> editors remarked that they were "about equal." <BR>> <BR>> Worth the read, for sure. <BR>> <BR>> Enjoy, <BR>> William R. Monroe <BR>> <BR>> <BR>> <BR><BR><BR></DIV></BLOCKQUOTE>
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