metal casting

Hi, I would like to make a run for metal series models from stargate. The first to go (there will be a series of 5 models at least) is Destiny from Stargate Universe. The material would be 60% steel and 40% bronze with bronze finish I will do max 30 ships in the first run. The price will be...

Hello! First time posting. I want to make a mold of a 3D printed object to cast in pewter or bismuth. I'm using Smooth-On Mold Max 60 for the high heat. My object is basically a 1.25" cube with raised details. There are a few small undercuts. Here's my question. I'm obviously making a two-part...