How To Make A DIY Flamethrower

This particular handmade flamethrower is crafted to fit in a normal backpack, which keeps your hands and arms free to throw flames while you use it!

With an air compressor, a diesel nozzle, a fuel tank, some hose, and some fittings, you’ll have a flamethrower capable of running off of tiki torch fuel.

Here we have the step by step instructions, but you can find the full video instructions at the bottom of this post.

Watch until the end for an awesome demo!

For more homemade weapons, check out our list of 7 Badass Weapons You Can Make At Home, here!

DIY Backpack Flamethrower Tutorial


Step One: Air Compressor

DIY Backpack Flamethrower

Start with an air compressor. You’ll want to remove the regulator, and fill in the space left behind with a brass plug.

Step Two: Tap Hole

Tap a hole in the bottom of the compressor to add fittings.

Step Three: Set Fitting

DIY Backpack Flamethrower

Your fittings should look like this with the correct valves.

Step Four: Run Hose From Valve

Run a hose from the valve and fit the end with an internal check valve.

Step Five: Connect Valve to Diesel

DIY Backpack Flamethrower

Connect the internal check valve to a diesel nozzle.

Step Six: Remove Spout and Add Pipe For Fuel

Remove the spout and add a pipe running down to a tip and hose as pictured. The tip and hose will run the fuel for your flame.

Step Seven: Tap Hose To Tank

DIY Backpack Flamethrower

Run a hose with a nozzle to a fuel tank tapped with a valve and fitting like this. Fill up your tank with tiki torch fuel! Add valve along the hose to better regulate your fuel.

Step Eight: Adjust and Test

DIY Backpack Flamethrower

Spark up and start throwing flames! You can adjust with the nozzles on the hose. The whole rigging will fit neatly into a backpack.


Watch This DIY Flamethrower Video:

Want to make more badass tools? Check out these related articles on our site:

How to Make a DIY Primitive Burn Bowl

How To Make A DIY Saw Blade Slinger

How To Make A DIY Death Ray

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