I would like to create a Model A Ford beltline like the one in the attached photo. I don't think it is available as a repro part (is it?). I'm thinking one way would be to create a mold (buck) from an original part in the same way you would make a fiberglass mold. I think this is the way companies like Brookville and Dearborn Duce did it. Does anyone know of a commercial product for this purpose? Do you know of metallic body filler tough enough to hammer-on?