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Old August 31, 2011, 08:52 AM   #5
hornetguy
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Join Date: January 14, 2011
Location: on the north side of DFW
Posts: 970
When you say "the little cracks in the mold" do you mean the vent lines?

If so, the only way I know of to remove the lead is to use either the sharp point of an exacto knife, or scalpel, or a dental pick to drag through the vent lines to clean out the lead.
You need HIGH magnification to make sure you don't get too carried away with the removal. It's easiest to do this on the cast iron molds, although I've had some success with aluminum ones.
Make sure you don't damage the edges of the mold cavity when you clean out the vents.

One of the "lead-away" or lead removal cloths might work, I've just never tried one.
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