First time using a steel mold tonight. RCBS 2 Cav. Its pretty amazing dropped some awesome bullets and they are spot on round with no variance at all. Pretty impressed. How should I store it between sessions. More specific, what should be done to the mold after casting to prevent rust? I have read a couple things of people spraying them down with the WD-40. Would add a whole new process every time you want to cast from aluminum, you have to clean it up as it's a brand new mold ? I wiped it down while it was still hot with 2 cycle oil, left cavities full... which Ive never done with the aluminum molds but figured I would try it with the steel. Any quick tips would be greatly appreciated. Hopefully I'm not posting this in the wrong section.