Castings require very little finishing work. Once you have cast your piece, the Delft Clay can be re-used. Since this is a cold-molding process, molds can be made from patterns composed of wood, wax, epoxy, plastics, and, of course, metal. Because this is a type of sand casting, it is best suited to producing castings without pronounced undercuts.

1. Fill and compact the Clay into one half of the aluminum ring frame
2. Remove excess clay with a straight edge (e.g. a flexible steel ruler)
3. Press your original pattern halfway into the clay.
4. Brush Mica Powder or talcum powder over this surface of the mold
5. Install the other half of the aluminum ring frame, fill with clay and compact
6. Open the ring frame and remove the pattern
7. Carve out a pouring channel and vents
8. Pour in molten metal