Using resin on an acrylic painting creates a glossy, protective finish that enhances the colors. The process involves preparing your workspace and artwork, accurately mixing the resin components, carefully applying the mixture to the surface, and allowing it to cure properly.
Preparing Your Workspace and Artwork
Before you begin, ensure your workspace is clean, level, and well-ventilated. Dust is the enemy of a flawless resin finish.
- Protect Surfaces: Cover your work surface with plastic sheeting or a drop cloth.
- Elevate Artwork: Elevate your painting using stands or blocks so excess resin can drip off freely. This is especially important for pieces where you want resin on the sides.
- Clean the Artwork: Ensure your acrylic painting is completely dry and free of any dust, debris, or oils.
Mixing the Resin
Resin is a two-part system: the resin and the hardener. Accurate measurement is crucial for proper curing.
- Read Instructions: Always follow the specific manufacturer's instructions for your chosen resin product regarding mix ratios and working times.
- Measure Precisely: Measure the resin and hardener by volume or weight according to the instructions. Use separate containers for each part initially.
- Combine and Mix: Pour the measured hardener into the resin (or vice versa, depending on instructions) into a clean mixing container. Stir slowly and thoroughly for the recommended time (usually 3-5 minutes), scraping the sides and bottom of the container. Avoid whipping air into the mixture.
- Tip: Mixing slowly helps minimize air bubbles.
Applying the Resin
Once mixed, the resin has a limited working time (pot life). Apply it promptly.
- Pour: Carefully pour the mixed resin over the center of your elevated painting.
- Spread: Gently spread the resin across the entire surface using a spreading tool (like a plastic spreader, craft stick, or brush designated for resin). Ensure even coverage.
- Cover Edges and Sides: Make sure the resin reaches all edges. For the sides of the painting, ensure you get an even coat. Some artists find that using their hand works well to get the resin all the way to the edges and apply an even coat on the sides of the painting.
Dealing with Bubbles and Curing
After applying, you'll need to address any trapped air bubbles and allow the resin to cure.
- Remove Bubbles: Use a heat gun or a quick pass with a propane torch held several inches away from the surface to release surface bubbles. Keep the tool moving constantly to avoid scorching the resin or artwork.
- Cover: Cover your piece with a box or plastic sheeting elevated above the surface to protect it from dust while it cures.
- Curing Time: Allow the resin to cure in a level, dust-free environment according to the manufacturer's instructions. This typically ranges from 24-72 hours for a full cure, although it may be tack-free much sooner.
| Step | Action | Key Consideration |
|---|---|---|
| Preparation | Clean, level, elevate artwork | Dust control is vital |
| Mixing | Measure and stir resin & hardener slowly | Accurate ratios and thorough mixing prevent curing issues |
| Application | Pour and spread evenly over the surface | Ensure coverage on main surface, edges, and sides |
| Edges & Sides | Guide resin to cover fully, potentially using a hand for even coating | Don't miss the edges! |
| Finishing | Remove bubbles, cover to prevent dust, allow to cure | Patience is key during curing |
By following these steps, you can achieve a beautiful, durable resin finish on your acrylic paintings, enhancing their visual appeal and protecting them.
