The strongest epoxy glue you can purchase is Systemthree's T-88. This two-part adhesive has a tensile strength of 7000 psi. It is well above the average strength for epoxies.
Gorilla Epoxy - Incredibly Strong Glue
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Slow-Cure™ Epoxy - 4.5oz – Allied Lutherie
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5 Best Glues For Metal [We Tested]
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Testing epoxies for use in minimum diameter fin attachment
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