Add two 1/4 inch wooden dowels into the piece with the smaller holes. Glue them in if necessary. Once the glue has dried, apply a thin coating of baby...
With pewter's melting point being so low you can make molds out of lots of different materials. The following information will help you build a two part mold using a laser cutter and 1/4 inch thick wood. I used the laser cutter at my local TechShop. For more information on TechShop look them up. http://www.techshop.ws
Step 1: Draw the design.
The shape of the cast piece can be drawn in any drawing software as long as the software can export a DXF file. The DXF file can be read into Corel Draw for the laser cutting.