How to Duplicate diorama pieces with plaster casts
Watch this instructional video to make cheap molds for casting miniatures. You can then duplicate pieces for building your diorama or game terrain. Sculpt original forms using polymer clay, and layer on latex to make a cheap rubber mold. Or, you can use pre-made forms to press shapes into a soft mold. This video provides several modes of creating plaster forms and duplicates for miniature sculptures.