Open Face Weighted Companion Cube Mold

I made this mold in MeshMixer and plan to print with PLA, then pour molten Pewter into the mold. I simply imported the STL into MeshMixer, did a "Make Solid Offset" and then a plane cut to make the face open.

I will post pictures after printed and after casting.

******************************

Finally got the pewter and cast it (after many interruptions.... watch out for fillers inside the pewter your melting down).

After the metal had been poured, I waited a little bit and then pulled the