How to Make Metal Throwing Knives

Written by richard toole
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How to Make Metal Throwing Knives
(Hemera Technologies/ Images)

Rather than throwing darts or using bows and arrow, some hobbyists like to throw knives. Throwing knives are used much like darts, usually thrown at targets. Though throwing knives do take a lot of practice to throw properly, they are becoming popular, especially because they are readily available online. Some individuals become so interested in throwing knives that they begin making their own knives. Once you find the right kind of steel, cutting and making your own throwing knife is not as difficult as you might think.

Skill level:

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Things you need

  • Stainless steel, 40x4 mm, cut to 280±0.5 mm
  • Cardboard
  • Permanent marker
  • Scissors
  • Chisel
  • Screwdriver (flathead)
  • Vice
  • Hacksaw
  • Round file (bastard cut)
  • Glue (for paper)
  • Round File (smooth)
  • Sandpaper (fine grit, size 180 & 320)
  • Home computer with Internet access
  • Printer
  • Newspaper

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  1. 1

    Go to a metal yard that stocks stainless steel number EN 1.4301 / AISI 304. Order a piece of the stainless steel cut to 40mm by 4mm, with a 280±0.5 mm length. (Order additional pieces cut to the same size in case you make a mistake building the knife later.)

  2. 2

    Log on to the Internet. Download a template of a throwing knife. (There are several websites that offer free throwing-knife templates.) Print out the template. Cut out the knife template with a very sharp pair of scissors.

  3. 3

    Glue the paper template to a piece of rigid cardboard. Allow the glue to dry. Cut the cardboard (and paper) shape out with the scissors.

  4. 4

    Open the vice and insert the piece of steel into it so the wide part is facing up. Tighten the vice. Place the cardboard knife template on top of the piece of stainless steel. Set a weight on top to help hold the cardboard in place. Trace the shape of the knife template onto the stainless steel with a permanent marker. Remove the weight and cardboard template from the piece to steel.

  5. 5

    Loosen the vice and remove the piece of steel. Wrap the top half of the steel with a thin piece of cardboard or newspaper to keep it from getting scratched by the vice. Place the steel back into the vice upright so that the outline of the handle (bottom half) is visible. Tighten the vice.

  6. 6

    Install a metal-cutting blade into a hacksaw. Cut downward along the outline of the knife on the steel. Pry the excess metal away from the knife outline with a chisel. Saw one half of the handle outline, then cut the same length on the other side of the handle. Discard the scrap metal.

  7. 7

    Unlock the vice and adjust the knife template so that the top (blade) part is sticking up towards the ceiling. Lock the vice. Cut the outline of both sides of the knife with the hacksaw.

  8. 8

    File the rough and jagged edges of the knife with the bastard and fine files. Make sure the edges are smooth. Slant the blade end with the file so it has a tapered edge.

  9. 9

    Wrap a piece of fine grit sandpaper around a small piece of wood. Sand the entire throwing knife, both the flat sides and the edges. Check for any rough spots or burrs, and use the file and sandpaper to remove.

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