Shenzhen Alu Rapid Prototype Precision Co., Ltd.

Casting metal dice involves high temperatures (often 300–800°C or 570–1470°F), molten metal, and potentially toxic fumes. This is a hazardous hobby requiring proper equipment and precautions. Always work in a well-ventilated area or outdoors, wear heat-resistant gloves, safety goggles, a face shield, and protective clothing. Use a fire extinguisher rated for metal fires, and never leave melting metal unattended.

Materials Needed

Metal: Pewter (easiest for beginners, melts at ~230–300°C/450–570°F), zinc alloy, aluminum scrap/ingots (melts at ~660°C/1220°F), or bronze/copper for advanced users. Start with 100–500g ingots or scrap.

Mold Materials: 3D-printed master die (PLA or resin), platinum-cure silicone or vulcanized rubber for the mold, or greensand/investment plaster for one-off casts.

Tools: Crucible and furnace/torch (propane or electric), tongs, mold release spray, files/sandpaper for finishing, engraving tools for numbers.

Optional: Pressure pot or centrifugal caster for bubble-free results; enamel paints for coloring.

Step-by-Step Guide to Casting Metal Dice

1.Design and Create the Master Mold

2.Make the Reusable Mold

3.Prepare and Melt the Metal

4.Pour the Molten Metal

5.Cool and Demold

6.Finish and Engrave

7.Quality Check and Test

Tips for Success

Beginner Metal: Pewter is forgiving; avoid lead-free if engraving (it's brittle). Aluminum cans work but bubble easily—use ingots instead. 

Scaling Up: For multiples, use rubber molds; for one-offs, sand casting is cheap.

Common Issues: Bubbles? Degass metal or use vents. Warping? Even cooling. Dull finish? Polish thoroughly.

Cost: Starter setup ~$100–300; each die costs $0.50–2 in metal.