How do I get rid of Bubbles in epoxy resin?

Bubbles are common. A simple way to eradicate them is by using a heat source like a heat gun or a small torch. Lighter = No (You will burn your finger off).  

Also, we have special formulations that naturally have fewer bubbles like Liquid Diamonds.

PRO TIP: When mixing the epoxy resin and hardener... 

the more volume of mixture you have in a pot, the more chemical reaction. This creates heat. To reduce the heat, mix the product efficiently within 3-5 minutes and get the mixture out and spread across the project. 

The longer it stays in a pot the more heat. More volume = more heat. 

More heat will not only create more microbubbles but it can make the cure brittle like glass. 

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