How to Make a Ninjato

The Ninjato is an interesting weapon for any swords smith to create. The ninjato is the most famous weapon that the ninja possess.


  1. 1
    Make sure you have access to plenty of steel and a furnace. 4-6 gauge steel would be ideal, but you could always go smaller
  2. 2
    Have essential materials such as a black smiths hammer, anvil, tongs, gloves, and a pair of clear safety classes.
  3. 3
    Cut steel to roughly 2 12 feet (0.8 m) - 3 12 feet (1.1 m)
  4. 4
    Plan out where the tang (hilt), tip, and edge of sword will be.
  5. 5
    Preheat the furnace until at a steady temperature.
  6. 6
    When setting metal into furnace, DO NOT put metal directly in front of flame as it will cause uneven heat distribution and will cause the blade to have later defaults.
  7. 7
    When the metals color changes to a bright orange or slight yellow color take out with tongs and begin to hammer the bottom of the metal where you wanted your hilt to be until it is almost squished until it begins to look like the end of a file with the handle missing (do this process slowly and evenly, as it is one of the most critical parts of the blade).
  8. 8
    When hilt section is mostly done, begin to hammer ONE half of metal for the edge. The edge should take up near half the width of the metal as it has to have enough slope to make a perfect 33% angle. (don't worry about the tip of the blade, just begin to make the edge all the way to the end of the metal).
    • The edge should have two side to it.
  9. 9
    When the hilt and mid section of the blade is complete, begin to flatten out the top of the metal to prepare the tip. (the tip can be tricky to make on a one-sided blade, to after flattening it is OK to simple cut it off or grind it away as a beginner).
  10. 10
    When the tip is on shape, you can strengthen the blade by simple taking the wedge edge of the hammer and making small limes in the TIP of the blade, this way if a crack does form, it has to make its way all the way down the dents in the metal, thus ensuring a longer life for the blade.
  11. 11
    Now straighten the blade until it is 100% straight or else you will never be able to get it into a sheath and you will lose almost all of your cutting power.
  12. 12
    Once the metal is straight and has the correct shape you intended you can now begin to harden the metal by heating it up to a bright yellow color (almost until it is white-hot) then taking it out and laying it on a safe surface in a room that is as cold as you can get it (the more the difference the temperature the better!). Repeat by setting the metal back into the furnace and so on for a MINIMUM of 10 times or until you are satisfied.
  13. 13
    After the metal is back at a safe to touch temperature, you can now begin to shine it up a bit by grinding the sides and blade with a table grinder or what ever you have, just make sure not to burn or scar the metal as all your hard work would go to waste!
  14. 14
    Find or make a proper hilt for your sword, a hilt maker can be found near hobby shops or a store that sells weapons as such.
  15. 15
    Now sharpen your blade and tip to a perfect 33% angle, ensuring you have a straight ramp of a blade and not a slope.
  16. 16
    Clean it off, engrave the blade to however you want it, and go cut up some samurai!


  • While hammering metal, be sure to notice color and the noise of the metal. If you hear a loud, prolonged *ping* noise or notice the metal has turned red it is time to get the metal back up to a proper temperature again.
  • Buy metal that is wide enough to allow for a proper edge, about 3in-4in should do it, depending on the gauge of steel used.


  • Remember, a Ninjato or any other weapon as such IS NOT A TOY! Google "sword mistakes" to see what happens when you screw around with weapons!
  • Read manual for how to operate furnace properly
  • NEVER LEAVE METAL UNATTENDED! This could result in some other numb-skull picking up the metal and getting burned that could require a hospital visit or worse!

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Categories: Metalwork and Wire Projects