so i have been do alot of research and it is pretty crazy the prices they want for basically a hunk of steel. from what i have read here on the search and other sites seems like mass is the one of the critical factors. many have welded plates on to get more weight. so here i am thinking and may not work at all. anyways i have huge amounts of lead, as in hundreds of pounds of it from work. well i have this RR track and was thinking maybe weld a small box togteher, melt down say 150 lbs of lead and put the RR track about have way up the side of the box. from making fish weights i know the lead will kinda bond to the metal of the RR track and this would give it much more mass in a small area. so what u all think or have i lost my mind? yes i know all dangers of playing with melted lead.