How To Get Bubbles Out Of Resin Sphere
The Bubble Problem in Resin Spheres
Resin is a highly versatile material that is used in many different applications, including creating beautiful and unique spheres. Resin is a popular choice because it can be easily molded, is lightweight, and is extremely durable.
However, one of the most common problems people face when working with resin is the formation of bubbles within the sphere. When the resin is poured, it is quite common for air bubbles to get trapped inside, leading to a less than perfect finished product. If you are facing this problem, don’t worry – there are several ways to get rid of the bubbles and ensure you get a flawless resin sphere.
Why Do Bubbles Happen?
Bubbles in resin occur when there is a difference in temperature, pressure or viscosity. The bubbles are caused when the resin hardens and air gets trapped inside. They could also be a result of inadequate mixing of the components properly – the curing agent and the resin. If you are trying to create a perfect resin sphere, these bubbles can be detrimental to the finished product’s overall looks and feel.
There are several methods that you can use to remove bubbles from a resin sphere. The following are some of the most effective techniques.
Ways to Remove Bubbles from a Resin Sphere
1. Apply Heat
One of the most common methods of getting rid of bubbles in a resin sphere is using heat. You can use a heat gun or a hair dryer to apply heat to the affected area. When the resin is heated, it becomes slightly thinner, allowing the air bubbles to escape through the surface.
Ensure that you keep the heat source moving to avoid overheating one spot of the resin. Keep your hand held far enough from the sphere surface not to deform or deform the resin. Keep an eye on how the bubbles are eliminated with heat, and when it no longer works, stop. Any plastic wraps or tape covering the surface should be removed before using this method.
2. Use a Torch
Another method of removing bubbles from a resin sphere involves using a torch. You can use a propane torch to heat up the surface of the resin. Ensure you use a suitable torch with a small flame to apply heat on the affected spots for 3 to 4 seconds. The heat causes a small explosion-like reaction that rids the bubbles trapped inside.
Use a slow and steady flame, moving the flame forward for three to four seconds and then move on to the next spot. Repeat the process until you get rid of all the bubbles. Caution must be taken not to overheat it to cause damage or create more bubbles accidentally.
3. Vacuum Chamber Method
The vacuum chamber method is the most effective way to remove bubbles from resin but can be a bit costly. It is a complex procedure that requires the use of a vacuum chamber, vacuum pump, and a silicone or vacuum casting resin. Once you have all the materials, place the resin sphere in the vacuum chamber and put it under vacuum pressure. This creates a high pressure that causes the air bubbles to escape from the surface of the resin sphere.
The vacuum chamber method is efficient when it comes to removing stubborn, hard-to-reach bubbles and can work on new or old bubbles. It should be done within 7 hours of pouring the resin to see the effects of the vacuum chamber method.
4. Use of a Catalyst
Adding a catalyst to the resin mixture can help to get rid of bubbles that have formed within the sphere. Combine a few drops of silicone-based very viscous catalyst with the resin before pouring into the sphere. Use it sparingly and note that excessive use can spoil property of the resin. If too much catalyst is added, an uneven spoiling or cracks could occur.
The catalyst is useful to lower the viscosity of the resin and help to remove bubbles during the curing phase.
5. Spray Surface with a Mold Release Spray
Using a mold release spray can also help to eradicate bubbles in a resin sphere. The mold release spray is applied on the surface before the curing process begins. It lowers the viscosity and helps to remove air bubbles.
When the mold release spray is applied before pouring the resin mixture, it creates a slick surface that doesn’t allow air bubbles to get trapped in small crevices that can create bubbles.
Q1. Why does my resin still have bubbles after using the heat gun?
A: If the heat gun method fails, it’s possible that the bubbles within the resin sphere are too large to escape through the surface, or they may have already hardened. In such instances, you can try the vacuum chamber method to eliminate the stubborn bubbles completely.
Q2. How do I avoid bubbles in the first place?
A: Suppose you are pouring your resin in a 2 part mold. In that case, it’s best to pour the first half of your resin, after which you can gently tap the mold to dislodge any bubbles that might have formed. After that, let it cure and then proceed to the second layer and repeat the process.
For single molds, pouring the resin slowly and steadily and using a mold release spray can also help to reduce the number of bubbles that will appear.
Q3. How can I ensure I remove bubbles effectively?
A: It’s important to take your time when removing bubbles, using small and precise movements to eliminate them effectively. Also, keep an eye on the effects of each method and know when to stop cooking or using heat if it doesn’t work.
In conclusion, getting rid of bubbles in a resin sphere is not a daunting task, but it requires skill and patience. The above methods can help you remove bubbles effectively and create stunning resin spheres that are free from bubbles. Remember to choose the technique that best suits the situation, and always remain vigilant during the process to avoid damaging the resin surface.