as an effective heat exchanger to quickly remove heat from the steel being cast through it. as the cast shell begins to increase in thickness in the lower half of the mold, it abrades and wears the bottom of the mold. additionally, the diffusion of the copper substrate from the mold into the surface...
based only) brass aluminum brass condenser tubes brass pipe brass pipes brass shell cases with primers brass shell cases without primers brass small arms and rifle shells hard brass solids red brass scrap brass items yellow brass scrap construction construction materials plywood soil stone timber copper...