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When working with epoxy resin, achieving the perfect colour outcome relies on balancing your pigment dosage. Before committing to a large pour, it is wise to test pigment proportions in smaller quantities to avoid costly mistakes and inconsistencies.
Why Testing Matters
Resin pigments can be highly concentrated, and even small variations in the amount added can make a significant difference to the final shade and opacity. If you add too much pigment, you risk affecting the resin’s curing process, while too little can result in transparent or uneven colour. By testing with a small batch first, you can observe the cured colour, coverage, and opacity, helping you adjust for your main project with confidence.
How to Test Pigment Proportions
- Mix a small sample of your chosen resin and hardener according to instructions.
- Add the pigment gradually, noting the amount added by weight or drops.
- Cure the sample and evaluate the shade and finish in your intended lighting conditions.
- Adjust pigment levels for the final mix if necessary, keeping notes for future reference.
The Colourfun Set and other concentrated pigments allow for strong colours with small amounts, so go slowly when increasing colour intensity.
When This Practice Matters Most
Testing is especially important when aiming for opaque effects, attempting custom shades, or combining different colourants. This is also crucial if you use new brands or pigment types—subtle chemistry differences can impact results. Taking time for a quick trial can mean the difference between a flawless finish and a disappointing outcome.
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Investing a little time in small-scale pigment testing will give you reliable, repeatable results and help you unleash the full potential of coloured epoxy resin. For more tips on creating unique colours in resin, visit our parent guide.