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How to build a flamethrower

Category: DIY weapon / Various DIY weapon

How to build a flamethrower

Homemade flamethrower

difficultyDifficulty: ★★★☆☆

timeTime: About 4 hours

ScrapFrom scrap: ████░░░░░░ 40%


PreamblePreamble

I made this a flamethrower for a school science competition and successfully take the first place. Immediately after the competition they took a it to the school museum and work on it was not possible to continue. Next I will tell you how to build a flamethrower.


MaterialsMaterials

  • The working fire extinguisher
  • Handle. In my case it handle of trimmer and iron pipe. You can use handlebar of a bicycle
  • A large metal clamp or something similar
  • The handle grip with a cable from a motorcycle or a bicycle brake lever
  • The metal tube
  • The plug with nipple
  • lighter
  • The spring (to return brake handle)
  • Wires and tubes
  • Metal grid
ToolsTools

  • Hacksaw
  • Drill
  • Fixing Tools
  • Pliers
  • Welding
  • Wires
  • The black paint

    DIY flamethrower


  • Step 1

    Cut extra length of trimmer handle
    How to build a flamethrower

  • Step 2

    Fix it in a tube with bigger diameter
    Drill them together and insert a bolt with nut

    How to build a flamethrower

  • Step 3

    Disassemble the fire extinguisher
    How to build a flamethrower

    Here you can see a clamp and copper tube
    How to build a flamethrower

  • Step 4

    Fix handle on fire extinguisher with clamp
    How to build a flamethrower

  • Step 5

    Attach a handle of the clutch or brake to the handle of diy flamethrower

  • Step 6

    Fasten handle's cable to upper part of trigger of fire extinguisher. Tube of cable must be below lower part of fire extinguisher's trigger (you can see it on 9 step photo)
    So you pull the handle and trigger pulls too

    How to build a flamethrower

  • Step 7

    Fix a spring to handle to make it auto return.
    How to build a flamethrower

  • Step 8

    Make a thread on thin metal tube and screw it into fire extinguisher's nozzle

  • Step 9

    Drill a hole in the upper part of fire extinguisher and solder a tube with nipple into it
    How to build a flamethrower

  • Step 10

    Another end of copper tube fix with handle tube with a strip of thin metal
    How to build a flamethrower

  • How to build a flamethrower's ignition


  • Step 11

    Attach a piezo from lighter to the handle tube, and fasten another lighter nearby.
    How to build a flamethrower

    This is an ignition system in work
    How to build a flamethrower

  • Step 12

    Almost completed diy flamethrower
    How to build a flamethrower

  • Step 13

    I cover the forward part of flamethrower with metal grid and paint it all with black color
    How to build a flamethrower

    How to build a flamethrower

  • How it works

    Fill your diy flamethrower with any flamable fuel (gasoline, kerosene...), then pump it with air. Then ignite the ignition lighter. Your homemade flamethrower is ready to burn!
    How to build a flamethrower

    Author: Kuller-killer

VideoVideo

I recommend you to watch a very interesting video about the jet rocket flamethrower Bumblebee -M, it is a hundred times more powerful than handade one =) Small buildings are scattered like a cardhouses

ResultsResults and tips

  • Diy flamethrower is quite greedy to the fuel
  • Provides continuous three-meter jet of flame
  • Burn any liquid fuel
  • You can use the liquefied gas as fuel, I'm scared of thinking about it
  • Homemade flamethrower very ergonomic, as a chainsaw
  • Cool for burn garbage and bushes in a backyard
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  1. <
    Alejandro

    5 November 2017 04:22

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    Hi, how do you connect the brake lever to the fire extinguisher?
    Thanks!
    Dislike 0 Like