I love heavy metal.
I just made a little belly weight mold out of 2 peices of maple.Nails for pins in the side lines em up I use one of those big spring clamps to hold it together while i pour.has about 7 holes just smaller than 5/16.19/64 ? not sure its a wierd size but its just smaller so it fits in a 5/16 hole without messin wit em.