When it comes to making wood coasters, the last step is crucial for ensuring their durability and longevity. In this article, we will guide you through the process of sealing your wood coasters using a spray-on polyurethane. By following these steps, you can protect your coasters from any potential damage caused by wet drinks and ensure that your project lasts for years to come.

Step 1: Choose the Right Sealant

Before sealing your wood coasters, it’s important to select the appropriate sealant. For this project, we recommend using a clear satin or clear matte spray-on polyurethane. These types of sealants provide a protective barrier without altering the natural beauty of the wood.

Step 2: Prepare for Sealing

To ensure a smooth sealing process, it’s essential to work in a well-ventilated area, preferably outdoors on a mild weather day. Gather all the necessary materials, including safety glasses to protect your eyes during the spraying process. Additionally, find a suitable surface to lay your coasters on while applying the sealant. A piece of scrap wood or cardboard works well to prevent any damage to your working area.

Step 3: Position and Protect the Coasters

Lay your wood coasters down on the chosen surface, making sure to tilt them slightly to allow for even coverage. It’s crucial to position them in a way that they are off the surface to prevent them from sticking to the working area. Placing them on a piece of scrap wood or using drop cloths can offer added protection during larger projects.

Step 4: Shake the Sealant

Before applying the spray-on polyurethane, shake the can vigorously for a few minutes. This ensures that the sealant is well mixed and ready for use. It’s recommended to shake the can again right before spraying to maintain consistency and quality.

Step 5: Apply the Sealant

Hold the can approximately six to eight inches above the coasters and begin spraying in a steady motion. Make sure to cover the entire surface of each coaster with a thin, even layer of sealant. Avoid getting too close to prevent excessive thickness and potential drips. If necessary, you can always wipe off any imperfections with a quick rag to maintain a smooth finish.

Step 6: Allow Drying Time

After applying the sealant, allow your coasters to dry completely. The drying time may vary, but the spray-on polyurethane typically dries relatively quickly. If desired, you can flip the coasters over and repeat the sealing process on the other side once the first side is dry. However, for the purpose of this guide, we will focus on sealing only one side.

Step 7: Check for Perfection

Once the sealant has dried, inspect your coasters for any imperfections such as bubbles or streaks. If you notice any issues, gently wipe the surface with a rag to ensure a smooth finish. Remember that any imperfections present after drying will be permanent, so it’s essential to address them before finalizing the project.

Step 8: Finishing Touches

Now that your wood coasters are perfectly sealed and dry, you can proceed to assemble them together if needed. Whether you plan to gift them or enjoy them in your own home, you can be confident in the durability and protection provided by the sealant.

In conclusion, by following these steps, you can easily seal your wood coasters with a spray-on polyurethane, ensuring their longevity and protecting them from any potential damage caused by wet drinks. Remember to work in a well-ventilated area, position the coasters properly, and apply thin, even layers of sealant for the best results. With a little time and effort, your wood coasters will be ready to serve you for years to come. So go ahead, complete this final step, and enjoy the satisfaction of a finished project!