How to Measure Epoxy Components Precisely by Weight

Measuring your epoxy resin and hardener by weight is crucial for reliable, quality results when crafting resin panels. This simple but essential practice helps ensure a perfect cure and a flawless finish on your project.

Why Weight Matters

Epoxy resin systems require precise mixing of resin and hardener, typically in a specific ratio given by the manufacturer, such as 3:2 or 100:55 by weight. Measuring by weight, rather than volume, eliminates inconsistencies caused by differing densities. Accurate weighing helps prevent sticky spots and under-cured or brittle finishes that can occur if the ratio is off.

How to Measure and Mix Properly

Use digital kitchen or jewellery scales set to grams for the best accuracy.
Pour the resin into a clean mixing cup, zero the scale, then add the hardener to reach the required combined weight.
Slowly stir the mixture as recommended by the product instructions to ensure full integration.

For example, Art Pro epoxy resin uses an easy 3:2 mixing ratio by weight, making it straightforward for both beginners and experienced artists to achieve clear, even results.

When Accuracy is Especially Important

Measuring by weight becomes critical when working on larger surfaces, deep pours, or projects that demand a flawless, long-lasting finish—like tabletops or decorative resin panels. Small variations in ratio are magnified with bigger projects, so take extra care at this stage to avoid wasted materials or failed cures.

Related guides

How To Make A Resin Panel

Mastering accurate weighing is a key part of making stunning resin panels. For more comprehensive guidance on the full process, see our main advice on how to make a resin panel.