Can I Colour Polyform or IWhite Polyurethane Resin?

Q: Colouring IWhite Resin

IWhite polyurethane resin is designed to be both colourable and paintable. You can introduce pigment or dyes to the liquid resin before mixing and pouring it into your silicone mould , resulting in customised effects throughout your piece. Once cured, IWhite readily accepts paints and other surface finishes, making it popular for modelmakers and crafters who want flexibility in their final appearance. Always test a small batch to ensure your chosen colourant blends well with the resin for the effect you want.

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Can I Colour Polyform or IWhite Polyurethane Resin?

If you’re looking to add a splash of colour to your next casting project, it’s important to know which polyurethane resins are suitable for tinting or painting. Understanding the options helps you achieve the creative result you have in mind.

Colouring IWhite Resin

IWhite polyurethane resin is designed to be both colourable and paintable. You can introduce pigment or dyes to the liquid resin before mixing and pouring it into your silicone mould, resulting in customised effects throughout your piece. Once cured, IWhite readily accepts paints and other surface finishes, making it popular for modelmakers and crafters who want flexibility in their final appearance. Always test a small batch to ensure your chosen colourant blends well with the resin for the effect you want.

Polyform Resin: Not for Colouring

Polyform polyurethane casting resin, in contrast, is not suitable for adding colourants before casting. Its beige formulation does not combine effectively with pigments and is intended for use as supplied, resulting in a consistent finish. If surface colour is desired, painting can be attempted after full cure, but integrating colours directly during mixing is not recommended and may interfere with the resin’s properties.

When This Matters

If your project requires precise colour matching or embedded effects in the casting, choosing a resin that is specifically formulated for colourability—like IWhite—is crucial. For simple prototype or neutral-toned creations where colour isn’t a factor, Polyform remains a solid rapid-cure option.

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What To Pour Into The Silicone Rubber Mold

Choosing the right polyurethane resin for colouring means knowing the capabilities of each option. For more guidance on selecting materials for moulding and creative pours, explore our main advice at what to pour into the silicone rubber mould.