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Quick tips for the variety of casting materials

Quick tips for the variety of casting materials

Quick tips for the variety of casting materials

Here are some quick tips for the variety of casting materials you can use in a ComposiMold mould:

Quick tips for the variety of casting materials

EPOXIES: Epoxy Resins, Putty, or Clay
Epoxies work well for pieces up to 8 cubic inches. For larger castings of 8+ cubic inches, choose epoxies with longer cure times of 24+ hours.
Experiment with freezing the mould prior to pouring epoxy resins that create a lot of heat during curing. Epoxy resins that require an added heat source for curing are not recommended.

Try our jewellery grade, crystal clear, Clear Casting Plastic for castings up to 6 cubic inches. Chill the mold for castings up to 20 cubic inches.

Choose a urethane with a longer cure time. These create less heat as they cure. You can also experiment with freezing the mould prior to pouring higher temperature urethane resins. Be sure to use talc powder/baby powder as your mould release before each casting made.

Silicones work great in ComposiMold moulds. Make castings with both platinum or tin cured silicone rubbers.

Mix plaster and water together in a 72 parts plaster to 28 parts water, by weight, or to a toothpaste-like consistency. Traditional plasters cure well but leave a slight soft layer on the outside of the casting. Fast curing masonry cements work great and cure extremely strong. Follow instructions for mixing ratios.

Try our ComposiStone formulation! It’s smooth like plaster but hard as concrete. It works very well in a ComposiMold mold.

Shea Butter and Glycerine Soap make great soaps! Chill the mould prior to pouring any higher temperature soaps (above 140ºF).

WAXES: (for candle moulds or encaustic casting)
Soy, Paraffin, Beeswax, and Melted Crayons work really well. Chill the mould first for higher temperature waxes (above 140ºF).

Use any type of polymer clay, modelling clay, putty, or real clay for push moulding in a ComposiMold. Do not use clay in a slurry form or the water will degrade the mould.

Pour or pipe many types of melted chocolate into your mould. Lightly tap or vibrate the mould to release air bubbles in the chocolate. No mould release is necessary for chocolates. Only suitable for use with Composi-Mold Food Contact.

Press softened fondant into your mould with your hands or a rolling pin and remove immediately. No mould release is necessary for fondant.

When casting edible treats, you can also use: no-rise cookie dough recipes, gummies, gum paste, ice, butter, and more!

For your art, craft, hobby, and hardware projects, you can also try: adding fillers and dyes to casting materials, ComposiMold itself as a rubber casting material, Modelling Compounds, Polyester Resin, Paper Mache and many more!


Quick tips for the variety of casting materials

Do you have a question about using a specific casting material that was not answered here?
Email or call anytime!
+44 (0) 20 8451 6188

With thanks to Composi-Mold for giving us permission to share this article.

Published by: Emma Burrows

Enthusiastic and extremely talented Cake Decoration and Sugarcraft Specialist. Emma's creativity and imaginative flair is what makes Shesto demonstrations and tutorials stand out from everyone else.

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