JB weld high heat. After you get it kneaded together, just tear off little pieces of steel wool and push into it. I mixed in a little clear loctite 2 hour epoxy to thin it down to keep it workable nearly and doubled the size of the pile with the steel wool. Don't forget to the wash the steel wool with brake cleaner or alcohol to remove the protective oil that keeps it from rusting and then allow to dry so it doesn’t contaminate the epoxy.
