get you a tuperware container just larger than the baits your trying to make. glue your bait top side down to the bottom of the container, put in as many baits as you want but leave 1/4 inch between them. make SURE the in tire bait is glued down. Spray a light coat of pam over the baits and the bottom of the mold. Mix up some fiberglass bondo resin being careful not to put in to much hardner. when mixed well pour slowly around baits. Make sure you have at least 3/16 of an inch above the baits to give you a strong mold. give it a few hours to dry and pull your bait out. No sealing the mold id necessary.Wait a couple of more hours and your ready to pour in your plastic