I just received a PEI-coated spring steel bed surface.
I had expected that I would mount it by putting magnets into a PTFE extension from the bed that holds magnetically to the handle portion that sticks out beyond the bed dimensions, so that I could keep the magnets below their curie temperature even when printing at high temperature. But it shipped with a self-adhesive sheet of flexible magnetic material like a huge fridge magnet.
Is my original idea of making a PTFE handle crazy? Does any of that flexible magnetic material still work at 130⁰C? Is any of it a good thermal conductor?