Interesting cuz I just thought of making weights with spikes so they stay and quit moving around, although movement is not bad, but wish it stayed in one place longer. Now I've seen your mold... I can fulfill my vision ! =)
LOL! I said I had a vision. I'm too scared to mess around with molten lead. Because just the thought of a small drop of molten lead can go deep into the layers of skin and muscles, I'll end up causing an accident. I think I might but I need alot of courage to start it.