Most Common Epoxy Resin Mixing Ratios Explained

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What are the most common epoxy resin mixing ratios?

Getting the mixing ratio right is crucial when working with epoxy resin. Different projects and products require specific ratios, so understanding these norms helps you achieve a flawless result every time.

Standard Mixing Ratios and Their Uses

The most familiar epoxy resin mixing ratios include 1:1 by volume and ratios like 100:55 or 100:60 by weight. A 1:1 volume ratio is especially popular for jewellery, crafts, and small decorative objects as it’s straightforward to measure and mix. Weight-based ratios, on the other hand, are common for deep-pour and larger surface projects. Always consult your resin’s label to confirm its precise requirements.

1:1 by volume: Ideal for quick crafts, coatings, and smaller moulds
100:55 or 100:60 by weight: Typical for deep-pour and larger castings, like table projects

Why Mixing Ratio Matters

Accurate mixing is essential for a smooth finish, full strength, and reliable curing. Adding too much or too little hardener can lead to a sticky surface or brittle results, so use precise tools—measuring cups for volume ratios and digital scales for weight ratios. For example, “One-2-One” epoxy resin uses an easy 1:1 volume ratio, perfect if you want reliable, fuss-free preparation.

Choosing the Right Ratio for Your Project

Select your resin based on your project’s size and purpose. Smaller artistic or jewellery pieces often benefit from the convenience of 1:1 by volume. For thicker pours, such as river tables or castings up to several centimetres, weight-based mixing ratios like 100:55 are commonly required. Products such as EpoxyTable 5-Five are formulated for deep applications and must be mixed by the manufacturer’s recommendation for the best results.

Related guides

How Do You Calculate Epoxy Resin

Selecting the correct epoxy resin mixing ratio is key to achieving your creative goals and ensuring your project’s durability. For more guidance on working out epoxy amounts and process tips, see our main guide on how to calculate epoxy resin.