I agree that Marine tex is a better choice for a filled epoxy and is almost identical to JB Weld, if you must use epoxy. Both are filled epoxies with iron filings used as filler that can withstand compression better than unfilled epoxy. That said, epoxies are still a form of plastic that is polymerized monomer chemically bonded by an epoxy bond into a polymer ( ie. a plastic.) and have all the same characteristics of plastic. They undergo tensile deformation and creep which increases with heat. Most epoxies are designed for impact resistance and have good elasticity to rebound. What they are worst at is constant pressure or tension over time. With most epoxies, this is the worst in the range of 20-25 degrees C and reach the maximum creep at times in the order of 700 to 1000 hours. These conditions can easily be reached in any average summer. There are many scholarly articles on this subject and it is a serious concern for engineers. Just Google epoxy , compression, creep. It is the reason that the Big Dig tunnel in Boston collapsed and killed a person. The epoxy embedded bolts suffered creep due to constant tension and slowly gave way over time. They did not come out but crept due to the epoxy deforming under constant stress. By using hard fillers in epoxy, like iron filings and silicates, compression and creep can be reduced but not eliminated. This is why I suggested using a mechanical solution like 5/8 inch long steel wedges made from large carpet tacks to wedge the bridge pin back into place and not have to worry about the long term effects of compression, temperature, and creep when using a product not well designed for withstanding compressive forces. I agree that epoxy can work in some cases, but it can fail too, as in the Big Dig tunnel in Boston. Douglas Gregg PhD Classic Piano Doc Southold, NY 11971
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