Heat Gun vs Torch for Epoxy Resin
Why Heat Is Used in Resin Art
Heat is one of the most important tools in a resin artist's studio. It is used primarily to pop surface bubbles that form during and after pouring, but it also helps move and manipulate resin, create cell effects in certain pour styles, and speed up the early stages of curing. The two most common heat tools used in resin art are the heat gun and the butane torch. Each has distinct characteristics that make it better suited for different situations.
The Butane Torch
What It Is
A butane torch is a handheld tool that produces a focused, high-temperature flame fueled by butane gas. It is the same type of torch used in culinary applications for tasks like caramelizing sugar. In resin art, it is used to pop surface bubbles quickly and efficiently.
How It Works on Resin
The flame from a butane torch passes over the surface of freshly poured resin and causes the surface tension of the bubbles to break instantly. The heat also briefly lowers the viscosity of the resin at the surface, allowing bubbles to rise and pop more easily. The effect is fast and precise.
When to Use a Torch
A butane torch is the preferred tool for bubble removal in most resin pours. It is fast, effective, and gives you precise control over where the heat is applied. It works especially well on flat pours in molds where you need to cover the entire surface quickly before the resin begins to set.
Torch Technique
Hold the torch 4 to 6 inches above the surface and move it in a slow, steady sweeping motion. Never hold the flame in one spot for more than one to two seconds. Lingering too long in one area can scorch the resin, cause yellowing, or create uneven curing. Work in passes across the entire surface rather than targeting individual bubbles. Two or three passes are usually sufficient.
Safety With a Torch
Always work in a well-ventilated area when using a torch. Keep flammable materials away from your workspace. Never use a torch near alcohol inks or other flammable additives that have not been fully incorporated into the resin. Allow the torch to cool before setting it down and store it safely away from heat sources.
The Heat Gun
What It Is
A heat gun is an electric tool that blows a stream of hot air at controlled temperatures. It is similar in appearance to a hair dryer but operates at much higher temperatures and with more focused airflow. Heat guns are used in a wide range of crafts and industrial applications.
How It Works on Resin
A heat gun warms the surface of the resin with hot air rather than an open flame. This gentler, more diffuse heat is effective at popping bubbles but works more slowly than a torch. The airflow from a heat gun can also move the resin slightly, which can be used intentionally to create texture or blend colors at the surface.
When to Use a Heat Gun
A heat gun is a good choice when you want more control over the heat application or when working in situations where an open flame is not practical. It is also useful for warming resin bottles before mixing to reduce viscosity and minimize bubbles during the pour. Some artists prefer a heat gun for working with alcohol inks because the airflow helps move and blend the ink patterns.
Heat Gun Technique
Hold the heat gun 6 to 8 inches above the surface and move it continuously. Do not hold it stationary over any one area. Use a lower temperature setting when possible to avoid overheating the resin. Most heat guns have adjustable temperature settings and a lower setting of 250 to 300 degrees F is sufficient for bubble removal in most resin pours.
Safety With a Heat Gun
Heat guns get very hot and the barrel retains heat for several minutes after use. Set the heat gun down on a heat-resistant surface and allow it to cool before storing. Keep the airflow directed away from your face and body. As with all heat tools, work in a ventilated area.
Heat Gun vs Torch: Which Should You Use?
For bubble removal in standard resin pours, a butane torch is faster and more effective. For warming resin before mixing, moving alcohol inks, or working in situations where an open flame is not appropriate, a heat gun is the better choice. Many experienced resin artists keep both tools in their studio and use them for different purposes depending on the pour.
If you are just starting out and can only choose one, start with a butane torch. It is the more versatile tool for the most common resin tasks and produces faster, more reliable results for bubble removal.
Learn More
Heat tools are just one part of a well-equipped resin studio. Explore the Studio Tools Overview for guides on all the tools I use. Have a question? Contact me directly or shop all products.