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When colouring epoxy resin, ensuring pigment compatibility is essential for successful results. Not every colourant is universal—let’s look at how to choose and test pigments for your resin projects.
Understanding Pigment & Resin Compatibility
Most pigments are formulated for specific resin types. For epoxy, such as those in the Resin Pro range, products like the Colourfun Set are designed to blend smoothly, providing stable colour intensity and even distribution. However, if you use another brand or type of resin—including UV or polyester resins—pigment behaviour can change. Pigments might not disperse well or could affect curing, clarity, or finish. Always check labels for resin type recommendations.
Recommended Testing Before Use
Before starting your main piece, test pigments and resin together in a small sample. Mix the pigment into a tiny batch of your resin and let it fully cure. Observe for any clumping, uneven colour, or setting problems. This simple step helps prevent costly mistakes on your main project and saves both material and time.
Choosing Suitable Colourants
Look for pigments or liquid colourants advertised as compatible with the resin you intend to use. Resin Pro’s “Colourfun” range and “Magic Crystal” transparent colours are reliable options for most epoxy work and art. Pay attention to the appearance you want—opaque pastes are great for bold, solid colours, while transparent liquid dyes suit gemstone effects and subtle tints. If you’re working with resins outside the Resin Pro family, compatibility cannot be guaranteed without your own testing.
When This Matters Most
- If you are embarking on a large, multi-layer artwork or expensive river table
- When precise colour consistency is vital
- Working with unfamiliar or third-party resin systems
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Understanding pigment compatibility helps you achieve vibrant, fault-free results across different resin projects. For more tips and detailed advice on resin colouring, see our main guide on how to lighten resin.