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If you want to add vibrant colours to your casting projects, it is important to select the right resin. Polyform polyurethane resin is a popular choice for detailed model making, but can it be coloured with dyes?
Colouring Capabilities of Polyform Resin
Polyform is a beige, fast-setting polyurethane casting resin specifically designed for robust, detailed moulds. However, this resin is not suitable for colouring with dyes or pigments. Due to its opaque beige formulation, attempts at tinting will not yield the bright or clear results artists often seek with pigmented castings. If your project involves coloured or transparent finishes, you’ll need to consider alternative materials.


Resin Alternatives for Colourful Castings
If colouring is essential to your sculptural work, opt for a resin system formulated to accept dyes or pigments. For example, “IWhite” Polyurethane Casting Resin is white and can be tinted in its liquid state before curing or painted afterwards. Similarly, deep pour epoxy resins such as EpoxyTable 5-Five and Epoxytable 10-Ten can be mixed with suitable pigments and dyes, offering creative flexibility for colourful, transparent, or artistic effects.
When This Matters
- If your work requires precise colour customisation for models, replicas, or decorative pieces, be sure to select a colourable resin from the outset.
- For functional models or rapid prototyping where colour is not a priority, Polyform remains an excellent choice owing to its speed and detail.

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Choosing the right resin is crucial for both vibrant finishes and reliable results. For more information on suitable resins for every sculptural need, visit our main guide on where to find resins for sculpture.
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