Epoxy Resin Reaction Profile: What It Means for Your Projects

Why the Reaction Profile Matters

The reaction profile indicates how quickly and intensely a resin generates heat during curing—the exothermic reaction. Thicker pours or larger projects tend to build up more heat, which impacts how deep you can safely cast in a single go. If heat dissipation is not managed, you risk yellowing, cracking, or compromised clarity.

• Slow-curing, low exothermic resins like Epoxytable 10-Ten are designed for deep pours up to 10cm, minimising overheating.
• Medium-depth casts (2–5cm) are typically best served by a resin such as EpoxyTable 5-Five with a controlled curing profile.
• For shallow or detailed projects, a faster-curing formula like Trasparente (up to 2cm) keeps working time manageable.

Choosing the Right Resin for Your Pour

Selection depends on the maximum pour thickness and project size. Deep casting (above 5cm or with sides over 100cm) calls for a resin with low exothermic reaction to prevent heat build-up. Attempting thick pours with standard resins may cause excessive heating, leading to bubbles, warping, or incomplete curing.

• Deep pours (up to 10cm): Use a specialised solution like Epoxytable 10-Ten.
• Medium pours (2–5cm): EpoxyTable 5-Five offers excellent stability for tables and large art pieces.
• Thin layers (under 2cm): Trasparente provides clarity and quick setting for artistic and DIY work.

Always check the manufacturer’s advice on recommended pour depth and layer in stages if near the maximum.

When the Reaction Profile is Especially Important

The reaction profile should be a key consideration for any large resin casting—such as river tables, thick art blocks, or embedded objects. In these applications, controlling heat prevents surface distortion, yellowing, and internal flaws, ensuring your work remains stable and clear.