This is a multi-part message in MIME format. ---------------------- multipart/related attachment ------=_NextPart_001_0138_01C57700.EA1CF9C0 Here are a few pics of a solution to installing a new bolt and clamping. First, draw the back together (as much as possible) with lots of good = strong clamps. I bent several of the pipes in the picture below (not = proud of that, but just to point out that you often need to really crank = down on clamps to draw a piano back together). I also let string tension = down prior to clamping. Clamp at the back posts, not on the filler blocks. Use two clamps if = more power is needed. Use clamps to draw the back together. Bolts to = hold it there. I use epoxy in the gap - but like Ron N. said, I'm not = sure how much that will really do because you are not bonding two = properly prepared wooden surfaces together - you are bonding to old glue = that has already demonstrated its ability to fail. I removed two interferring tuning pins and drilled and bolted (after = clamping, of course). Replaced tuning pins - nice clean installation. Some folks have stated that there is no need to let string tension down = prior to clamping and some say you must. I say its better to and largely = depends on the size of the separation. I did a Baldwin Hamilton that had = a 3/4-inch separation. I let string tension down three semi-tones. After = clamping, epoxying, and bolting, the darn thing was nearly up to A440. = No doubt a separation that you can just barely sneak a business card = into could be handled without dropping pitch (especially if the crack is = down at the bass end). I don't drop string tension to make it easier to = pull the back together, but rather so I don't pop all the strings! Terry Farrell ------=_NextPart_001_0138_01C57700.EA1CF9C0 An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/a6/3a/78/03/attachment.htm ------=_NextPart_001_0138_01C57700.EA1CF9C0-- ---------------------- multipart/related attachment A non-text attachment was scrubbed... Name: not available Type: image/jpeg Size: 50792 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/0b/2f/0f/8a/attachment.jpe ---------------------- multipart/related attachment A non-text attachment was scrubbed... Name: not available Type: image/jpeg Size: 50383 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/d9/d1/43/e0/attachment.jpe ---------------------- multipart/related attachment A non-text attachment was scrubbed... Name: not available Type: image/jpeg Size: 68336 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/6a/4b/05/d2/attachment.jpe ---------------------- multipart/related attachment A non-text attachment was scrubbed... Name: not available Type: image/jpeg Size: 63165 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/63/14/3a/f2/attachment.jpe ---------------------- multipart/related attachment--
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