Choosing the Right Resin for Different Casting Thicknesses

What Resin Should Be Used for Different Project Sizes?

Project size matters when selecting the right resin for casting and creative work. Choosing the right formulation ensures your work cures properly and achieves the finish you want.

Small Castings: Up to 2cm Thickness

For projects such as jewellery, coasters, or detailed artistic applications where the resin layer remains below 2cm, a multipurpose casting resin like “Trasparente” epoxy is the perfect choice. It offers clarity, durability, and is easy to use, making it ideal for both beginners and professionals working on manageable-sized pours. Always pour in layers if your project slightly surpasses 2cm to avoid issues during curing.

Medium to Large Castings: 2–5cm and Beyond

For thicker pours such as small tables, large decorative objects, or river tables, select a resin formulated for deep casting, typically labelled for 2–5cm thickness or more per pour. These resins cure more slowly to minimise heat buildup and reduce the risk of imperfections. The River-Table Kit comes with options for both up to 2cm and deep pour up to 5cm thickness to suit larger projects.

Practical Tips for Resin Selection

Always check the maximum recommended pour depth for your chosen resin.
For projects thicker than 5cm, pour in multiple stages or choose specialist extra-deep casting formulations.
Work in a well-ventilated area and follow all mixing and curing instructions supplied with your resin kit.

When Layer Thickness Matters

Choosing the correct resin for the intended project size is vital—incorrect selection can cause overheating, bubbling, or poor curing. Following guidelines based on layer thickness ensures results that are both beautiful and structurally sound.

Related guides

By matching your resin to the scale of your casting project, you get the most out of your materials and create results you’ll be proud of. For more in-depth advice on what resin offers, see what do I get from resin?