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Mixing resin and hardener in the correct ratio is the key to successfully curing any epoxy project. Whether to mix by weight or by volume depends on the specific resin you choose—understanding this is essential for strong results.
Mixing by Weight: The Standard for Most Resins
The majority of epoxy resins are formulated to be mixed by weight. This approach allows for the most accurate combining of resin and hardener, as density differences between the two components can otherwise result in uneven setting. Using precision digital scales ensures you achieve precise ratios, providing dependable curing every time.
- Follow the manufacturer’s stated ratio, typically found on the packaging or technical datasheet.
- Zero your scales with the mixing container before measuring.
- Pour each component carefully to avoid accidental over-pouring.
Mixing by Volume: The Exception with One-2-One Resin
Some specialist resins are designed specifically for equal-part mixing by volume. For example, the One-2-One epoxy resin uses a simple 1:1 ratio by volume, making it exceptionally easy for beginners and hobbyists to use. Just measure out equal volumes of resin and hardener and combine them in a suitable container.
- Always double-check if your chosen resin specifies volume-based mixing before you begin.
- Use clear, graduated mixing buckets for accuracy.
When This Matters Most
The distinction between mixing by weight or volume is especially important when switching between resin systems. Incorrect measurement can lead to incomplete curing, tacky surfaces, or weakened results—so always consult the instructions specific to your resin.
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Getting your resin ratios right is fundamental for quality results. If you’d like more guidance on blending your materials, explore our complete advice on how to achieve a perfect mix between resin and hardener.