Design-Cast 62 Mold Recommendations

You can cast or lay-up DESIGN-CAST 62 in flexible molds made from:

• Polyurethane
• Polysulfide
• Silicone rubbers
• Natural rubber latex

Suppliers for flexible mold materials can be found on our Sources page.

You can also use rigid molds made from:

• Sealed wood
• Sealed plaster
• Polyester or epoxy resins
• Acrylic sheet materials

You can use plaster molds one or more times. You should thoroughly dry a plaster or wood mold and then seal it with a waterproof barrier coating, such as Krylon^® acrylic spray lacquer, a polyurethane varnish such as Minwax^® brand, or a hard wax which you should then buff to a smooth surface. AVOID USING SHELLAC—it has a tendency to stain DESIGN-CAST castings.

After the sealer has dried, apply a release agent to prevent the DESIGN-CAST from sticking to the mold (when a buffed hard wax is used as a sealer, no release agent is necessary.) We recommend Frekote^® 1711 as a general purpose release agent. Frekote^® suppliers are listed on our Sources page.

Non porous mold materials such as rubbers and plastics need no sealer, but you should use a release agent such as Frekote^®. An exception is silicone rubber, which needs no release agent.

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