Which Epoxy Resin Should I Use for Thick Pouring Over 5cm?

Q: Best Practices for Deep Pour Casting

Mixing ratios: Deep-pour resins have precise mixing requirements. Always follow the manufacturer’s guidelines for combining resin and hardener. Temperature control: Cast in a cool, stable environment to prevent excessive heat build-up. Slow and steady: Deep-pour formulas cure slowly, giving you plenty of time to remove bubbles and achieve a perfect finish. Mould preparation: Ensure your mould is leak-tight and resistant to heat, as the curing process can last many hours.

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Which Epoxy Resin is Suitable for Thick Pouring?

If you’re planning a deep pour project, such as a river table or large casting, choosing an epoxy resin formulated for thick layers is essential. Not all epoxies can handle the unique demands of castings over 5cm in depth.

What Makes an Epoxy Resin Suitable for Thick Pouring?

Thick layers of epoxy resin create a significant exothermic reaction, which can cause overheating, bubbles, or cloudiness if the resin isn’t designed for this purpose. For castings over 5cm, you’ll need a specialist deep-pour epoxy like Epoxytable 10-Ten. This resin has an exceptionally low exothermic reaction and super-low viscosity. That means you can achieve crystal-clear results in a single pour for projects up to 10cm thick.

Best Practices for Deep Pour Casting

Mixing ratios: Deep-pour resins have precise mixing requirements. Always follow the manufacturer’s guidelines for combining resin and hardener.
Temperature control: Cast in a cool, stable environment to prevent excessive heat build-up.
Slow and steady: Deep-pour formulas cure slowly, giving you plenty of time to remove bubbles and achieve a perfect finish.
Mould preparation: Ensure your mould is leak-tight and resistant to heat, as the curing process can last many hours.

When Thick-Pour Epoxy Really Matters

Opt for a deep-pour epoxy for projects such as statement river tables, encapsulations, and castings where a single, clear pour over 5cm is needed. Attempting these with standard, fast-curing epoxies risks distortion and spoilage.

Related guides

Choosing the right epoxy for thick pouring ensures clarity and strength across your creative and functional projects. For an in-depth guide on combining resin and catalyst ratios, return to our main FAQ.