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Deep resin castings—those thicker than 2cm—require a carefully selected epoxy to achieve a clear, durable result and avoid common issues like bubbles or incomplete curing. Choosing the right product is crucial for success.
Why Choosing the Right Resin Matters for Deep Pours
When casting epoxy layers thicker than 2cm, standard resins often heat up too quickly or trap bubbles, leading to cloudy or flawed results. Specially formulated deep-pour resins, such as EpoxyTable 5-Five, are designed to handle thicker applications (up to 5cm per layer) thanks to their low exothermic reaction and slow cure time. This allows bubbles to rise and dissipate more easily, resulting in a professional, crystal-clear finish.
Techniques for Achieving Perfect Deep Casts
To get the best results with deep pour epoxies, pour in layers if your project exceeds 5cm thickness, or if your piece is very large. Allow each layer to partially cure before pouring the next—typically a 6 to 8 hour interval works well. Gentle, steady mixing (ideally using a tool like the Anti Bubble Mixer) can help minimise air entrapment. Once poured, a quick pass of isopropyl alcohol on the surface can further assist in popping stubborn surface bubbles.
When This Advice Matters Most
- You’re creating river tables, decorative blocks, or any project with resin depths above 2cm.
- Your space is large, requiring significant resin volume and extended working time.
- Clarity and strength are top priorities for your finished casting.
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Selecting the right resin for thick castings plays a major role in producing clear, lasting results. For more in-depth tips on achieving bubble-free resin art, revisit our guide on how to avoid bubbles in epoxy resin.