hi diemai has it but you can make a bracket for multiple molds with 2 cavities one on each end of the mold ..one pour 2 weights at a time ..you need to make a bracket to hold your molds in and beable to hold your scale rods in place made from aluminium so you can turn them in for light wt. and back them out for heavy wts. make a scale on them or I would make one rod for each wt. good luck