Metal to PVC - Adhesive Advice

Here’s an adhesive problem to solve. Does anyone know of an adhesive
that will bond metal to PVC. In my case I am trying to permanently
bond sterling wire to cured Polymer Clay. I have tried several
epoxies and cyanacrylates and all eventually fail, especially at warm
temperatures. I have contaced several adhesive companies and none had
a solution. Love to hear if anyone on the forum has an idea.