Free shipping on orders over £29,85 
Shipping Tracking! 
Google
Facebook← Back to Is the resin still soft after 24-48 hours?
If your epoxy resin stays soft or forms bubbles after curing, too thick a pour could be the culprit. Careful layering is key to smooth, durable results.
Why Does Thickness Matter?
Epoxy resins generate heat as they cure. Pouring deeper than the recommended maximum—for example, more than 2 cm at once for “Trasparente”—slows down the curing process. This can lead to soft or tacky resin, as the inner layers may remain uncured even if the surface feels hard. Excess thickness can also trap air, resulting in uneven, bubbly finishes instead of a crystal-clear result.
Practical Tips for Bubble-Free, Firm Castings
- Respect the maximum pour depth: Always check your resin’s datasheet—common recommendations range from 1–2 cm per layer depending on the product.
- Pour in layers: If your project requires depth, allow each layer to fully cure before adding the next. This ensures each section hardens thoroughly and avoids excessive heat build-up.
- Work in the right temperature range: Curing is sensitive to environmental conditions. Aim for a stable, moderate room temperature unless the manufacturer suggests otherwise.
- Minimise trapped bubbles: Pour slowly, and, if compatible, use a heat gun over the surface to help bubbles rise and pop.
When This Matters Most
Thick pours are tempting for deep casting, river tables, and art pieces. However, ignoring resin limits is a classic pitfall for those new to epoxy—especially with clear projects where bubbles and soft layers are immediately visible. For reliable results, select a resin suited to your required thickness and always build up gradually.
Related products
Related guides
Understanding how layer thickness affects curing helps you avoid soft or bubbly resin and ensures professional-quality finishes. For more advice on resin curing and troubleshooting, return to our main guide: Is the resin still soft after 24-48 hours?