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If your epoxy resin has gelled before you were ready, don’t worry – this can often be prevented with a few thoughtful adjustments for your next project. Here’s a practical guide on how to minimise the risk of unexpected curing during your future resin work.
Control Your Pouring Thickness and Volume
Exceeding the recommended layer thickness or total volume is a common cause of premature gelling. For example, a deep pour product such as EpoxyTable 5-Five is engineered for projects up to 5cm thick per layer. If you need to cover surfaces exceeding 100 cm or use larger amounts, pour in multiple layers, allowing suitable wait times for each to partially cure—this helps dissipate excess heat and ensures consistent setting without overheating or gelling too quickly.
Mix Thoroughly and Use the Correct Ratios
Always follow the manufacturer’s recommended mixing ratio closely—a common guide is 100 parts resin to 55 parts hardener by weight for deep pour systems. Mix gently but thoroughly, scraping the sides and bottom of your vessel to prevent unmixed portions that could disrupt curing. Avoid the temptation to mix large batches at once, as this increases the risk of exothermic spikes, which can promote early gelling.
Manage Working Conditions and Wait Times
Room temperature, humidity, and use of heat sources (like heat guns or warm water baths) all influence cure speed. Aim to pour in a cool, ventilated space and avoid direct sunshine or added heat. When working with bigger or thicker pours, plan for longer wait times between layers—many deep pour resins recommend waiting several hours before the next pour. Adhering to these steps gives you greater control over setting times and can prevent your resin from unexpectedly turning to gel.
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By adjusting your technique with the right products and mindful preparation, you’ll significantly reduce the chances of premature gelling. For more troubleshooting and in-depth advice, visit our full guide on what to do if epoxy resin gels unexpectedly.
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