How To Get Bubbles Out Of Resin Sphere

How To Get Bubbles Out Of Resin Sphere

How To Get Bubbles Out Of Resin Sphere

Resin spheres are beautiful decorative items that can enhance the ambiance of any space. Whether you are creating a paperweight, a pendant, or a piece of art, achieving a bubble-free resin sphere is crucial for a professional finish. However, getting bubbles out of a resin sphere can be a challenging task. Don’t worry, though! In this article, we will guide you through the process of removing bubbles from your resin sphere, ensuring a flawless final result. So, let’s dive right in!


In this guide, we will cover:

  • Understanding the causes of bubbles in resin spheres
  • Preventing bubbles before pouring the resin
  • Removing bubbles during and after pouring the resin
  • Using a pressure pot for bubble-free results
  • Finishing touches for a flawless resin sphere

Understanding the Causes of Bubbles in Resin Spheres

Before we discuss how to remove bubbles, it is important to understand why they form in the first place. Bubbles can occur due to a variety of reasons, including:

1. Air Entrapment:

When you mix and pour resin, it tends to trap air bubbles inside the mixture. These bubbles can remain in the resin as it cures and solidifies, resulting in a flawed finish.

2. Mixing Process:

The way you mix the resin can also contribute to the formation of bubbles. Mixing too vigorously or too quickly can introduce air into the resin, leading to bubble formation.

3. Improper Pouring Technique:

If you pour the resin too quickly or unevenly into your mold, it can create turbulence, trapping air bubbles in the mixture.

Preventing Bubbles Before Pouring the Resin

Prevention is always better than cure, and the same holds true for bubbles in resin spheres. Here are some steps you can take to reduce the chances of bubble formation:

1. Choose the Right Resin:

Not all resins are created equal. Some resins are specifically formulated to have a lower viscosity, meaning they are less likely to trap air bubbles. Opt for a high-quality, low-viscosity resin for best results.

2. Mix Slowly and Avoid Air Entropy:

When mixing the resin and hardener, take your time and stir slowly. This will minimize the introduction of air bubbles into the mixture. It is also beneficial to allow the mixed resin to rest for a few minutes before pouring it into the mold.

3. Warm Up the Resin:

Resin tends to flow more smoothly and release trapped air bubbles when it is warm. Placing the resin container in a warm water bath before mixing can help reduce the number of bubbles in your final product.

Removing Bubbles During and After Pouring the Resin

Even with preventative measures, it is common to encounter some bubbles during and after pouring the resin. Here are techniques you can employ to remove them effectively:

1. Using a Heat Gun or Blow Torch:

A heat gun or blow torch can be used to gently heat the surface of the resin sphere. As the heat is applied, the bubbles rise and pop, leaving the surface smooth. Take care not to overheat the resin to avoid scorching or discoloration.

2. Poking Bubbles with a Pin:

If the bubbles are stubborn and refuse to pop with heat, you can gently poke them with a clean pin or toothpick. This technique should be used sparingly, as excessive poking may create new imperfections.

3. Applying a Thin Layer of Resin:

If your resin sphere has cured and still contains some minor bubbles, you can apply a thin layer of resin over the surface to fill in the imperfections. As this layer cures, it will blend seamlessly with the existing resin, giving your sphere a flawless finish.

Using a Pressure Pot for Bubble-Free Results

If you frequently work with resin and want to achieve consistently bubble-free results, investing in a pressure pot can be highly beneficial. A pressure pot applies pressure to the resin as it cures, forcing any trapped air bubbles out. This method allows you to create crystal clear resin spheres without the need for extensive post-pouring techniques. A pressure pot can be found in many craft stores or online retailers specializing in resin supplies.

Finishing Touches for a Flawless Resin Sphere

After removing or preventing bubbles, there are a few additional steps you can take to ensure your resin sphere looks professional and stunning. These include:

1. Sanding and Polishing:

Use fine-grit sandpaper to smooth out any imperfections on the surface of the resin sphere. Start with a lower grit and gradually move up to higher grits for a polished finish. Follow up with a polishing compound or resin polish to bring out the shine of the resin.

2. Adding UV Protection:

Resin tends to yellow over time when exposed to sunlight. To maintain the clarity and color of your resin sphere, consider applying a UV-protective coating. This will also help protect it from scratches and damage.


1. Can I use a hairdryer instead of a heat gun?

Yes, a hairdryer set on low heat can be used as a substitute for a heat gun. However, a heat gun provides more concentrated and controlled heat, making it a better option for removing bubbles.

2. How long do I need to wait after pouring the resin before using a heat gun?

Wait for about 10-15 minutes after pouring the resin before using a heat gun. This will allow the resin to partially cure and prevent the heat from disturbing the overall shape of the sphere.

3. Can I reuse the resin that contains bubbles?

Unfortunately, it is not recommended to reuse resin that contains bubbles. The bubbles can affect the overall quality and strength of the resin, leading to potential cracks or breaks in the final product.

4. Is it possible to completely eliminate all bubbles from a resin sphere?

While it is challenging to achieve a completely bubble-free resin sphere, following the techniques mentioned in this article will significantly reduce the presence of bubbles. The goal is to minimize their appearance to the point where they are virtually invisible to the naked eye.


Creating a resin sphere with zero bubbles is an art that can be mastered with practice and the right techniques. By understanding the causes of bubbles, taking preventive measures, and utilizing various bubble removal methods, you can achieve stunning, flaw-free resin spheres. Remember to have patience, experiment with different approaches, and most importantly, enjoy the process of creating beautiful resin art.

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