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Low Exothermic Reaction: Achieving Thick Resin Pours up to 5cm

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Low Exothermic Reaction: Achieving Thick Resin Pours up to 5cm

When working with resin, achieving thick castings without the risk of overheating can be a challenge. Low exothermic reaction resins allow you to safely pour layers up to 5cm thick, opening new possibilities for creative and large-scale projects.

What is a Low Exothermic Reaction and Why Does it Matter?

Exothermic reaction refers to the heat generated when resin cures. Standard resins can overheat or even crack if poured too thickly in one go. Products specifically formulated for low exothermic reaction release heat more slowly, enabling much thicker pours—up to 5cm—while maintaining safety and clarity. This is especially valuable for making tables, countertops, and resin artworks that require substantial depth.

Safe and Efficient Thick Pours: Practical Tips

  • Choose an appropriate resin: Not every resin can handle thick pours. Opt for a product designed for deep casting, such as EpoxyTable 5-Five, which allows single-pour depths up to 5cm.
  • Monitor project size: For larger projects (tables with sides above 100cm or significant total weight), consider pouring in two or more stages with several hours between layers to prevent excessive heat build-up.
  • Mix carefully and pour slowly: Ensuring a thorough yet gentle mixing reduces bubbles and promotes a consistent cure throughout the pour, improving the end result.

When Low Exothermic Reaction Matters Most

Thick, clear pours are essential for statement pieces like river tables, art blocks, or countertops where depth and clarity are crucial. Using a low exothermic resin minimises risks of cracks or yellowing from overheating, making it ideal for projects where quality and appearance are key.

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Understanding the benefits of low exothermic reaction resins empowers you to safely attempt thicker, more ambitious resin casting projects. For more guidance on maximising your resin use and saving money, see our full advice at How to stretch resin to save money?.

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