How To Get Bubbles Out Of Resin Before Pouring

How To Get Bubbles Out Of Resin Before Pouring

How To Get Bubbles Out Of Resin Before Pouring

Resin is a popular material used in various crafts and projects due to its versatility and durability. However, one common issue that arises when working with resin is the presence of bubbles. These bubbles can ruin the final result, leaving a surface full of imperfections. Fortunately, there are several techniques you can employ to get bubbles out of resin before pouring, ensuring a smooth and flawless finish. In this article, we will explore these techniques in detail, providing you with step-by-step instructions to achieve bubble-free resin creations.


  • Introduction
  • Materials You Will Need
  • Techniques to Remove Bubbles
  • Helpful Tips and Tricks
  • Frequently Asked Questions


When working with resin, whether it’s for jewelry, art pieces, or even countertops, getting rid of bubbles is crucial to achieve a flawless finish. Bubbles can form for various reasons, including the mixing process, environmental factors, or even the resin itself. To ensure you end up with a bubble-free project, it is essential to understand the causes of bubbles and employ effective techniques to eliminate them before pouring.

Materials You Will Need

Before we delve into the various techniques to remove bubbles from resin, let’s gather the materials that will come in handy throughout the process:

  • Resin: Choose a high-quality resin suitable for your specific project.
  • Hardener: The hardener is required to activate the resin and start the curing process.
  • Measuring Cups: Use precise measuring cups to ensure the correct resin to hardener ratio.
  • Stir Sticks: Wooden or silicone stir sticks work well for mixing the resin and hardener.
  • Torch or Heat Gun: These tools generate heat, which helps eliminate bubbles from the resin.
  • Resin Molds: Depending on your project, you will need the appropriate molds to pour the resin.
  • Disposable Gloves: Protect your hands from direct contact with the resin.
  • Safety Goggles: Essential for eye protection when working with resin.
  • Timer: Use a timer to keep track of the resin’s pot life and curing time.
  • Release Agent: Apply a release agent to the molds to make resin removal easier.
  • Isopropyl Alcohol: This will help remove surface contaminants on the molds or finished resin pieces.

Techniques to Remove Bubbles

Now that we’ve gathered the necessary materials, let’s explore the most effective techniques to remove bubbles from resin before pouring:

1. Proper Mixing and Degassing

The first step in preventing bubbles is to ensure a correct resin to hardener ratio and thorough mixing. Follow the manufacturer’s instructions regarding the ratio and thoroughly mix the resin and hardener in a clean, dust-free environment. Be gentle while mixing to minimize introducing additional air into the mixture. Once mixed, you can employ the degassing technique to eliminate any trapped air.

Here’s how to degas resin using a vacuum chamber:

  1. Pour the mixed resin and hardener into a non-reactive container that will fit in the vacuum chamber.
  2. Place the container inside the vacuum chamber and seal it.
  3. Turn on the vacuum chamber and allow it to reach its maximum vacuum level.
  4. Keep the resin in the vacuum chamber for a few minutes, allowing the air bubbles to rise and escape.
  5. Once the air bubbles have risen, release the vacuum and remove the container from the chamber.
  6. Your resin is now degassed and ready for pouring.

2. Using a Torch or Heat Gun

If you don’t have access to a vacuum chamber, using a torch or heat gun is an effective alternative to remove bubbles from resin. The heat generates surface tension, causing the bubbles to rise and pop. Here’s how to use a torch or heat gun properly:

  1. After pouring the resin into the mold, hold the torch or heat gun a few inches away from the resin surface.
  2. Move the flame or heat source across the surface in a sweeping motion, ensuring not to linger in one spot for too long.
  3. As you move the heat source, you will notice the bubbles rise to the surface and pop.
  4. Continue the process until no more bubbles rise to the surface.
  5. Be cautious not to overheat the resin, as this can cause damage or discoloration.

3. Using a Toothpick or Pin

For smaller, hard-to-reach bubbles in resin, using a toothpick or pin can help eliminate them before pouring. Here’s how:

  1. Prepare your resin as usual and pour it into the mold.
  2. Allow the resin to settle for a few minutes, allowing the bubbles to rise to the surface.
  3. Dip a toothpick or pin into some isopropyl alcohol and use it to gently touch the surface of the resin.
  4. The alcohol will cause the bubbles to pop, helping them dissipate.
  5. Repeat the process if necessary until all bubbles are removed.

Helpful Tips and Tricks

While the techniques mentioned above are effective in removing bubbles from resin, here are some additional tips and tricks to ensure a successful bubble-free pour:

Avoid Overmixing

Mixing resin for prolonged periods can lead to additional air incorporation. Follow the resin manufacturer’s instructions and mix until the resin and hardener are fully combined. Overmixing can introduce more bubbles and compromise your final result.

Prevent Moisture and Dust

Before starting your resin project, ensure your workspace is clean and free from dust and moisture. Cover your workspace with a dust cover and avoid pouring the resin in a high-humidity environment. Dust and moisture particles can cause bubbles to form, affecting the quality of your finished piece.

Work in Thin Layers

When pouring large quantities of resin, it is advisable to work in thin layers rather than pouring it all at once. Pouring in thin layers allows the bubbles to escape more easily and reduces the risk of trapping air within the resin. Allow each layer to cure before pouring the next.

Frequently Asked Questions

1. Why are there still bubbles after using these techniques?

Even with the proper techniques, removing all bubbles from resin can be challenging. Some factors, such as temperature and humidity, can affect the resin’s ability to release bubbles. Experiment with different techniques, adjust your environment, and seek high-quality resin to minimize bubbles.

2. Are there any other methods to remove bubbles?

Yes, there are additional methods you can explore. Some crafters use a pressure pot to remove bubbles from resin. The increased pressure forces the air bubbles to compress, preventing them from expanding and causing imperfections. However, pressure pots can be expensive and require proper safety precautions.

3. Can I reuse the resin after degassing or removing bubbles?

No, once the resin has been degassed or the bubbles removed, it is not recommended to reuse it. Resin that has been manipulated or exposed to air has a shorter pot life and may not cure properly.

4. What should I do if bubbles form after pouring?

If bubbles form after pouring the resin, you can use a toothpick or pin to gently pop them. However, be cautious not to damage the surface of your project. Applying heat with a torch or heat gun can also help eliminate these post-pouring bubbles.

With the techniques and tips provided, you are now equipped to tackle bubbles in resin successfully. Practice these methods, be patient, and experiment with different variables to achieve a flawless result. Remember, bubble removal is a vital step in resin crafting, ensuring your projects are professional-looking and aesthetically pleasing.

Happy crafting!

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