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When making thick wood and resin boards, it’s important to pour resin in successive layers rather than all at once. This common approach ensures a controlled curing process and a high-quality, stable result for your project.
Why Layering Matters for Thick Pours
Casting large volumes of epoxy in one go can cause overheating, distortion or incomplete curing. Thick pours also trap bubbles, making it difficult to achieve perfect clarity. Pouring resin in controlled, successive layers keeps the exothermic reaction in check and helps release trapped air, resulting in a stronger and clearer finish.
How to Pour in Layers
- Identify your maximum safe pour thickness—products like EpoxyTable 5-Five allow up to 5cm per layer, while Epoxytable 10-Ten is suitable for up to 10cm.
- For surfaces over 100cm across or when exceeding 8kg epoxy in a single application, always layer your pours with breaks between each. Allow the previous layer to cure until firm but still slightly tacky before starting the next.
- Work in a dust-free, level environment and follow the manufacturer’s mixing ratios and curing times. This helps avoid delamination between layers.
Choosing the Right Resin for Layered Pours
Select an epoxy formulated for thick, deep pours, such as those described above. Some complete kits—like those found here—include guidance and all materials needed for layered projects, which is especially handy for beginners.
When This Matters
Layering is crucial for any project involving deep fills, such as river tables, embedded objects, or wide slabs. It’s especially important when working with large surface areas or substantial volumes to avoid project failure.
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Mastering the art of pouring in layers is key to working successfully with wood and resin boards. For a deeper dive into techniques and product selection, visit our main guide on how to work with wood and resin boards.