How to Measure and Mix Resin and Hardener Precisely

Measure and Mix Your Resin and Hardener Precisely

Achieving flawless resin spheres begins with getting your measuring and mixing steps just right. Careful attention at this stage sets the foundation for clear, bubble-free castings with consistent results.

Why Accurate Measurement Matters

Resin and hardener must be combined in the correct ratio for your chosen product—usually by weight or volume as specified by the manufacturer. Inaccurate measurement can lead to sticky, soft, or brittle spheres, making precise weighing essential for reliable results. Use digital scales for accuracy, and always check your instructions for the ideal mixing proportions.

Best Mixing Techniques for Resin Projects

Once weighed, pour your resin and hardener into a clean mixing cup. Stir the mixture slowly but thoroughly for several minutes, scraping the sides and bottom, until fully blended and streak-free. Rapid stirring can introduce bubbles, so take your time. For small decorative objects, silicone moulds such as the “3 Sphere” silicone mould offer an ideal casting environment for your perfectly mixed resin.

When Precision Becomes Critical

Exact mixing is especially crucial when working with deeper moulds or creating sphere shapes, where trapped air bubbles and improper curing can ruin a piece. Deep pour resins, like the “EpoxyTable 5-Five”, excel in spheres above 2 cm, but still rely on meticulous measuring and gentle blending to cure as intended.

Related guides

How To Make A Resin Sphere

To master resin sphere casting, always begin with accurate measurement and careful mixing. For more advice and mould recommendations, see our main guide on how to make a resin sphere.