How to make wooden coasters with resin

Making wooden coasters with resin is a fun and creative project that combines woodworking and resin casting. Here’s a step-by-step guide to creating beautiful wooden coasters with resin:

Materials Needed:

• Wooden Coasters: You can either buy pre-cut wooden coaster blanks or cut your own from a wooden board (such as pine, oak, or any other type of wood).
• Resin: Use a high-quality epoxy resin that’s specifically designed for crafting.
• Resin Hardener: This is mixed with the resin to activate it and make it cure.
• Mixing Cups: Use separate cups for resin and hardener.
• Stir Sticks: For mixing the resin and hardener.
• Disposable Gloves: To protect your hands from resin.
• Painter’s Tape: To seal the edges of the coasters.
• Sandpaper: For smoothing the wooden surface.
• Optional Pigments or Dyes: If you want to add color to the resin.
• Stabilizing Brush: To spread resin evenly on the wooden surface.
• Plastic or Silicone Molds (optional): If you’re making specific designs or impressions in the resin.

Instructions:

Step 1: Prepare the Wood

1. Sand the Coasters: Begin by sanding the wooden coasters. You want to ensure the surface is smooth and even. Start with a coarse-grit sandpaper and gradually move to finer grits (e.g., 120-grit, 220-grit) to achieve a smooth finish.
2. Clean the Wood: After sanding, wipe off any dust with a cloth or a tack cloth to ensure that no particles get into the resin.

Step 2: Apply Resin to the Wooden Surface

1. Seal the Wood: If you want a glossy finish or to prevent air bubbles from rising through the wood, apply a thin layer of resin to seal the surface. Let it cure according to the manufacturer’s instructions (usually around 24 hours).
2. Tape the Edges: Use painter’s tape around the edges of the coaster to avoid resin dripping over the sides.

Step 3: Mix the Resin

1. Follow the Ratio: Mix the resin and hardener in the correct ratio as specified by the manufacturer. For example, it might be a 1:1 ratio or 2:1 depending on the brand.
2. Stir Thoroughly: Stir the mixture slowly and thoroughly for the time specified on the resin instructions (usually 3-5 minutes). Be sure to scrape the sides and bottom of the cup as you stir to ensure it’s fully mixed.
3. Optional Pigment: If you want to color the resin, now is the time to add pigments or dyes. Stir them in well to achieve the desired color.

Step 4: Pour the Resin onto the Coasters

1. Apply the Resin: Pour the resin onto the wood. You can either pour a thin layer directly onto the surface or use a brush to spread the resin evenly. Make sure the resin covers the entire surface, including the edges.
2. Smooth the Surface: Use a clean brush or stick to gently spread the resin and ensure it’s level. If you want to create a deeper or layered effect, allow the first layer to cure before applying additional layers.
3. Remove Bubbles: Use a heat gun or a blow torch to gently pass over the surface. This helps release air bubbles trapped in the resin. Keep the heat source a few inches away from the surface to avoid damaging the resin.

Step 5: Let the Resin Cure

1. Curing Time: Allow the resin to cure according to the manufacturer’s instructions (typically 24-48 hours). During this time, ensure the coasters are in a dust-free environment to avoid particles settling on the resin.
2. Check for Imperfections: Once the resin has cured, check for any imperfections or rough spots. If necessary, sand the edges lightly with fine-grit sandpaper.

Step 6: Final Touches

1. Remove the Tape: Once the resin is fully cured and hard, carefully peel off the painter’s tape around the edges.
2. Finish the Edges: If the edges are sharp or uneven, you can lightly sand them for a smoother finish.
3. Polish (Optional): If you want to achieve a high-gloss finish, use a polishing compound to buff the surface of the resin.

Tips:

• Temperature: Make sure to work in a room with a temperature between 70°F and 80°F (21°C – 27°C) for the resin to cure properly.
• Resin Amount: Don’t mix more resin than you need, as it can begin to harden in the mixing cup before you finish applying it.
• Safety: Always wear gloves and work in a well-ventilated area to avoid inhaling fumes from the resin.

Creating wooden coasters with resin is an enjoyable and artistic way to customize your living space or make personalized gifts. With creativity and attention to detail, you can experiment with different designs, colors, and patterns to make truly unique coasters!

For more woodworking inspiration and detailed projects, check out Ted’s Woodworking Course here.