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An incorrect mixing ratio is one of the most common reasons epoxy resin doesn’t cure as expected. Whether you’re new to resin work or experienced, getting this fundamental step wrong can lead to sticky, soft, or partially set results. Understanding the importance of proportions is key to every successful project.
Understanding Mixing Ratios
Each epoxy resin product has a specific resin-to-hardener ratio, which may be given by weight or by volume. Using the wrong ratio—adding too much or too little hardener—will stop the catalysing process, leaving your creation uncured or tacky. For example, our One-2-One Epoxy Resin is designed to be mixed simply as 1:1 by volume, making it user-friendly and almost error-proof for beginners.
How to Avoid Common Mixing Mistakes
- Always check whether your chosen resin requires mixing by weight or by volume, as instructions can differ.
- Use accurate measuring tools—such as graduated cups for volume or precise kitchen scales for weight-based mixes.
- Mix both components thoroughly, scraping the sides and bottom of your mixing container, so that the blend is uniform and free from streaks.
If in doubt, refer to the product instructions, as the right proportion is crucial for the chemistry to work and achieve a strong, fully cured finish.
When This Matters Most
Getting the ratio correct is vital for jewellery making, thicker resin pours, and projects where clarity and hardness are required. An incorrect mixture can result in costly material waste and disappointment, so it’s worth taking your time at this stage.
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Ensuring your resin and hardener are mixed in the right proportions is essential for full curing and lasting results. For more help on curing issues and troubleshooting resin projects, visit our main guide: Why is the resin not catalysing?