Why is My Resin Still Soft After 24-48 Hours? Common Causes & Fixes

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If your resin piece is still soft after 24-48 hours, you’re not alone—this is a common issue for both beginners and experienced makers. Getting to the root cause can help you achieve beautifully cured, durable results.

Common Reasons Resin Remains Soft

Most issues with soft resin after the expected curing period stem from mistakes during the mixing or pouring process. The two most frequent culprits are an incorrect mixing ratio and environmental factors like temperature. Measuring by weight (not volume) is usually the most reliable way to get the correct ratio: always check your specific product’s instructions. Pouring resin in layers thicker than recommended can also lead to areas that remain tacky or rubbery.

Incorrect mix: Double-check your A:B ratio by weight.
Poor mixing: Mix thoroughly for at least 3–5 minutes.
Low temperature: Room temperatures below 20°C will slow curing.
Excessive layer thickness: Stick to the limits stated for your chosen resin.

Troubleshooting and Next Steps

If your resin is still soft, first consider whether you can remove any uncured material, or if your piece might harden with extra time in a warmer room. If not, check which resin type you used and its maximum recommended pouring thickness. For general casting up to 2cm, a product like Trasparente Multipurpose Clear Epoxy Resin is formulated specifically for reliable results within expected time frames. For smaller or faster projects, fast-cure resins such as ICreation or Icrystal provide even quicker turnaround, but still require careful measurement and mixing.

When This Matters

Resin softness is particularly concerning when making coasters, art pieces, or surfaces expected to withstand handling. If the resin isn’t fully cured, the item may remain sticky, bend easily, or suffer from dust sticking to the surface. Always choose a resin suitable for your project thickness and ensure your workspace is suitably warm for optimal curing.

Related guides

Is The Resin Still Soft After 24 48 Hours

Understanding why resin sometimes remains soft after 24-48 hours will help you troubleshoot and avoid repeat issues. For more on getting perfect results every time, see our main guide on resin curing times and troubleshooting.