Saturday 21 December 2019

Removing bubbles from Resin

When you mix the Resin and Hardener you will get air bubbles. You need to eliminate these air bubbles or atleast minimize the amount or else once the resin has cured they will be visible or might create dents on the surface.

These are the ways i use to try and eliminate bubbles

1. Stir gently
The first way is to mix the clear and hardener gently. You need to make sure both have incorporated well together but mix gently and slowly for about a minute.

2. Use a flame lighter
This is one of the most affordable and common method to get rid of bubbles. After mixing use a flame lighter on the surface. All surface bubbles will pop.

3. Work in a warm room
Sometimes the temperature also affects the mixture. Here in India i do not have that issue. You can maybe run the heater for a while in the room if its too cold and make an ambient temperature for casting

4. Warm the resin and hardener before casting
Sometimes i use this method for my 1:1 resin since it is very viscous. I place both the resin and hardener bottle in warm water. Make sure the water is just warm and not boiling and do not keep the bottles for too long, just until you feel the liquid inside is moving more freely. Once the liquids are more fluid you will be able to mix it more easily thus giving you less bubbles.

5. Heat gun
This works similar to a flame lighter but with more heat and intensity. Use it over the resin surface for about 30 seconds. Using it for too long will affect the curing process.

These are some of the methods that i use. Apart from this there is another one. Putting the resin mix in a pressure pot. This is usually used for large castings. When you put the mix inside the pressure pot it creates pressure which makes the bubbles smaller and thus gets rid of them.

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