How do I mix 3D Finish Epoxy Resin properly?

Accurate Measuring and Mixing

Begin by weighing or measuring the resin and hardener. For the most precise results, combine 100 parts of component A to 45 parts of component B by weight—or, if using measuring jugs, 100 parts A to 50 parts B by volume. Pour both components into a clean container and mix thoroughly for around two minutes, making sure to scrape the sides and bottom so all material is properly incorporated.

Surface Preparation and Best Practices

Before applying the mixed resin to your 3D printed piece, ensure the item is completely dry, free from dust or grease, and, if needed, lightly sanded for better adhesion. Epoxy works best in controlled environments—ideally around 20°C. Keeping your workspace and tools clean reduces the risk of imperfections.

• Always use fresh, uncontaminated measuring tools.
• Mix slowly to minimise air bubbles.
• Only prepare as much resin as needed for the job to avoid waste.

When Careful Mixing Matters

Properly mixed resin is vital when you need your 3D print’s surface to be smooth, paintable or easily polished. Attention to the mixing ratio prevents issues such as sticky surfaces or incomplete curing. If you’re using the 3D Finish Fast Coating Epoxy Resin, following these steps helps achieve professional-quality coatings every time.