Common Mistakes to Avoid When Casting Resin

Incorrect Mixing Ratios

Resin and hardener must be measured and combined precisely as specified by your product instructions. Guesswork or rough estimation can lead to a sticky, soft finish—or prevent the resin from curing at all. Always read the manufacturer’s instructions carefully and use suitable mixing tools for accuracy.

• Use separate, marked measuring cups for resin and hardener.
• Stir gently and thoroughly to fully blend both parts, scraping the sides and bottom of the container.

Skipping Protective Gear and Workspace Prep

Working without gloves, a mask, or eye protection can expose you to unpleasant fumes and sticky spills. Lay down protective coverings for your table or floor, and work in a ventilated space. Proper preparation not only protects you but also keeps your finished pieces free from dust and hair.

Rushing the Curing Process

It’s tempting to demould your piece early, but handling resin before it’s fully cured can cause dents or fingerprints. Give your project plenty of time—often several hours or overnight, depending on the resin type—before touching or finishing it. For clear guidance, explore the Resin Class – 3D Effects Coasters Masterclass, which details timelines and troubleshooting tips for beginners.