+x Warren (Staff) - 8/12/2019 4:20:20 PMMark is right, hadn't seen a bit about moulding it. Just thought you were trying to repair with gel.What he said is right. You might be able to sand away the rust spots and polish those bits up and fill slightly with a few layers of mould release wax. That way the mould will just have some slight raised areas where the rust is that can be relatively quickly sanded level and polished back up to a gloss.