I have had two bridge repairs fail. Granted, in both cases there was a crack connecting the pins allowing a lot of movement. I used 2 ton epoxy with one with no filler added. The other was repaired with PC 11 filled epoxy. However, if I used a filled epoxy again I would use JB weld that contains iron filings. It would have to be wormed up a bit to get good penetration. My point is (pun intended) that if you use the carpet tacks with the head removed as steel wedges, it works really slick. You don't even have to take all the tension off the string. I push the steel wedge shaped tack in next to the pin with pliers and finish by tapping it in with a punch until it is flush. If it does not move over enough, use a second one. It is so tight at that point that you can use any glue you want or none at all. You have to try it to see how neatly it works. It is a lot less messy and you don't have to tip the piano on its back either. I little CA glue would be fine and would wick in around the tack if you are worried about it moving. This is how I have repaired several bridges and it takes about 10 minutes. Can't beat that. Five minutes to put in the tacks and 5 minutes for CA or 5 minute epoxy. A few minutes to retune. Doug Gregg Classic Piano Doc Southold, NY 11971
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