Press Aluminum Cans into Ceiling and Wall Tiles

Step 2 Put foam piece into dry sand.

Before burying the actual foam pieces that were just carved, I recommend casting a couple of test pieces until you get the hang of casting.

In a metal canister or metal tub, fluff up some plain mostly dry sandbox sand that has been sieved with window screen. Press the foam mold into it the sand; then pack sand around the whole thing and bury it. Pat for a minute to reduce air pockets in the sand around the object. I added bricks on top of the sand to keep it packed tight.

Set a large metal soup can with both ends cut open onto the sprue; this is to funnel the liquid metal into the mold.