How do I prevent craters in epoxy artwork?

Key Steps to Avoid Craters

• Surface Preparation: Before pouring, ensure all surfaces are completely free from dust, oils, and fingerprints. Even minor contamination can cause the resin to repel, creating visible craters.
• Cleaning Solutions: Wipe down your workspace and substrates with a lint-free cloth lightly moistened with isopropyl alcohol. This helps remove stubborn residues, reducing surface tension issues.
• Choosing the Right Resin: Low-viscosity resins, such as EpoxyTable 5-Five, flow more evenly, helping eliminate bubbles and surface flaws that lead to cratering.

Tips for Application and Finishing

• Mixing Carefully: Stir resin and hardener gently to minimise trapped air. Avoid vigorous mixing, which can introduce bubbles and disrupt the curing process.
• Bubble Busting: After pouring, briefly mist the resin surface with pure isopropyl alcohol or use a heat gun to help bubbles escape. For precise application, Pure Isopropyl Alcohol 99.9% is a safe and effective choice, but always use it in a ventilated area and away from flames.
• Environment Checks: Aim for a clean workspace, as falling dust or debris can settle into curing resin and become focal points for craters.

When This Matters Most

Perfect resin surfaces are especially important for high-gloss artworks, tabletops, and decorative castings. Spending extra time on preparation and choosing products designed for thicker or clearer pours can make a noticeable difference in the final outcome.