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Old June 19, 2012, 09:49 PM   #8
Senior Member
Join Date: September 15, 2007
Posts: 666
Ed Harris told me to just coat the iron molds in USP Mineral Oil it prevents rust and burns off cleanly when you heat the mold on your hot plate with no cleaning before or after necessary. I've been doing this for several years now with my two old Ideal/Lyman molds.

After the mold cools I brush a coat of USP Mineral Oil over the entire mold block and sprue plate,rubber band the two halves together and put them in a zip lock bag and store them in an old coffee can.
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