Formulated to Prevent Overheating During Large Pours

Why Overheating Happens During Large Pours

Epoxy resins cure by a chemical reaction which produces heat—called an exothermic reaction. In deep or large pours, this heat can build rapidly, leading to issues like cracking, yellowing, or even smoking. Standard resins are not generally formulated to cope with thick layers, increasing the risk of overheating.

Which Epoxy Formula Should You Use?

For safe, thick castings—such as river tables or blocks over 5cm deep—specialised deep pour epoxy resins are best. “Epoxytable 10-Ten” is specifically formulated for pours up to 10cm, with a low exothermic reaction to reduce overheating. For smaller casts or applications up to 2cm, a versatile resin like “Trasparente” will suffice, provided you work within the recommended thickness limits.

Practical Tips for Successful Large Casts

• Always follow the manufacturer’s guidance on maximum pour thickness in one go.
• If your project is extra large or deep, pour in sections or stages, letting each layer cool.
• Work in a space with moderate temperature, and avoid using heat guns excessively during curing.
• Choose your epoxy specifically for deep pours to minimise the risks associated with heat build-up.