Yesterday I started to prep a new RCBS mould for a casting session. A couple squirts of brake cleaner followed by two hot water and Dawn scrubs with an old toothbrush then sitting the handled mould on the Lee pot. Once the alloy was melted and fluxed, corner dipped the mould for 30-45 seconds and the second pour produced keepers. A little further into the session the mould top, spruce plate and locator pins were treated with a mould prep/2-cycle oil. Easy, fast and it’s tough to beat these iron moulds.