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Homemade throwing knife

Category: DIY weapon / Various DIY weapon

Homemade throwing knife

Throwing knife

difficultyDifficulty: ★★★★☆

timeTime: About 4 hours

ScrapFrom scrap: ██████████ 100%


Throwing knifes - very interesting and skill entertainment. Theoretically, you can accurately throw a knife or any sharp-edged thing, but throwing knife is the best one. Large, heavy and balanced. Naturally, they cost money, but if you have old file or similar piece of steel... read this article, you can make of them throwing knives!


  • File or similar piece of metal

  • Fireplace with coals or stove
  • The angle grinder
  • Emery
  • Vices
  • Drill
  • Bucket of water

    How to make a throwing knife

  • About file

    Homemade throwing knife

    The file is made of high carbon tool steel and hardened. Ttrating such material (and even more making knifes of it) is too hard, so the metal is necessary to anneal. (Wikipedia: Annealing, in metallurgy and materials science, is a heat treatment that alters the physical and sometimes chemical properties of a material to increase its ductility and reduce its hardness, making it more workable. It involves heating a material to above its recrystallization temperature, maintaining a suitable temperature, and then cooling.) There is the only one negative aspect of making knife at home: process require heating and slow cooling.
    But if your workshop in the garage or on the balcony of the house, there is a solution: a gas burner to heat the file, and then slowly cool it in a container with hot sand.

  • Step 1

    If you are in the country, you will need to fire coals. Put your metal parts there and wait, sometimes fanning the embers. Look closer at the next photo and you will see glowing file among coals. So heat your metal to the dark red
    Homemade throwing knife

  • Step 2

    ... and let it cool slowly. Use an angle-grinder machine, cut unnecessary parts and make a sharp corner
    Homemade throwing knife

    Homemade throwing knife

  • Grinding

  • Step 3

    Grind your homemade throwing knife with 4 sides
    Homemade throwing knife

  • Step 4

    You need to left a flat surface between two sharp edges for make a groove
    Homemade throwing knife

    Homemade throwing knife

  • Step 5

    Fix knife on the vise
    Homemade throwing knife

  • Step 6

    And make a groove with angle grinder
    Homemade throwing knife

  • About balance

    The center of mass of knife must be at the location where the handle passes into the blade. If you do not match, you need to drill some holes to move the center of mass.

  • Quenching

  • Step 7

    When sharpening a knife will be completed, it is necessary to heat homemade throwing knife again to make it stronger. Heat it to the red glowing and then rapidly put it into the water. Then heat again up to ~250 degrees (not glowing) and left it for slowly cooling.
    Homemade throwing knife

  • Step 8

    You can polish your knife, or make a picture on it (you can read here how to make a picture on knife). I wind it round with a rope.
    Homemade throwing knife

    Homemade throwing knife

    And second homemade throwing knife
    Homemade throwing knife

    Homemade throwing knife

    It is comfortable to open a beer with this flange =)

    Homemade throwing knife

    Homemade throwing knife

    Now you know how to make a throwing knife, it's not so hard. Just improve your grinding skills, using a wood, then make a knife


ResultsResults and tips

  • Make a throwing knife from a file is not too difficult
  • You can make ordinary knife by adding a wood handle
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