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DIY crossbow

Category: DIY weapon / DIY guns

DIY crossbow

Medieval crossbow

difficultyDifficulty: ☢☢☢☢☢

timeTime: Less than 10 minutes

ScrapFrom scrap: ████░░░░░░ 40%


PreamblePreamble

One day I decided to make a crossbow. Average, no blocks like at the Middle Ages. When finished, I realized that I do not like resulting crossbow =) And after some more time, I completely redid it, and now it's the same as at the first photo. Here is a big report about how I build crossbow.


MaterialsMaterials

  • Planks
  • 3 and 6 mm metal sheet
  • Large saw
  • Hooks
  • Steel cable
  • Crib wall (sticks)
  • 1.5 mm steel sheet
ToolsTools

  • Jigsaw
  • Drill
  • Fixing Tool
  • Welding
  • Engraver
  • Equipment for polishing
  • Paint

    DIY medieval crossbow. Part 1


  • Step 1

    I made a body for crossbow of huge wooden board
    DIY crossbow

  • Step 2

    Trigger system. I pick simple and most popular one, here is a scheme
    DIY crossbow

  • Step 3

    The body of trigger system is made of 3 millimeter aluminum, other parts - from 6 mm aluminium
    A photo of assembled trigger system. Trigger is not pulled
    DIY crossbow


    Trigger is pulled now
    DIY crossbow

  • Step 4

    In the body I drilled a hole for trigger system, then put it into and fixed
    DIY crossbow

  • Step 5

    Strenghten body with steel in a thinnest place
    The bow is made of large saw, the length of each arm is 40 cm. It is attached to the body with triangles of 2.5 mm steel and two 10 mm bolts.
    DIY crossbow

  • Step 6

    At the end of each arm of bow I made a hole and put hooks
    DIY crossbow

  • Step 7

    Bowstring is a 5 mm steel cable. Edges pulled together into loops
    DIY crossbow

  • Result

    Version 1.0 of diy crossbow


    DIY crossbow

  • Step 8

    Few improvements: groove for bolt in a body and protection bracket for the trigger
    DIY crossbow

    DIY crossbow

  • Step 9

    Part of a body is covered with aluminum, because it looked quite ugly
    DIY crossbow

  • Step 10

    Metal strips for ergonomy
    DIY crossbow

  • Step 11

    Also I made real wood crossbow bolts. Shaft - from the back of a crib (there was 20 pieces of them), the tip - 8 mm bolt with nut, tail is made of thick plastic
    DIY crossbow

  • Tests

    According to the results of tests: this bolt struck 2 millimeter galvanized steel. Not bad for a diy crossbow, huh. Floor tiles with a metallic coating was splatter into cloud of pieces!

  • Step 12

    Also gave a name to my crossbow
    DIY crossbow

    DIY crossbow

  • Step 13

    Made new bolts. I tryed to use spiral grooves in the body of bolts instead of using tails
    DIY crossbow

    DIY crossbow

    DIY crossbow

  • The end of part 1

    On this step I decided to make new body for crossbow, literally to build a new crossbow, more powerful and beautiful.

  • How to build a crossbow. Part 2


  • Step 1

    So I take another huge wooden board and cut a body of crossbow
    DIY crossbow

  • Step 2

    This time I made the groove for bolt by milling cutter
    DIY crossbow

  • Step 3

    And I change trigger system, here is a scheme of a new one
    DIY crossbow

    DIY crossbow

  • Step 4

    Trigger and Г-shaped part are made of 5 mm steel. Plates - 1.5 mm steel. Roll is made on lathe, it's axis is a nail.
    DIY crossbow

  • Step 5

    Half assembled trigger
    DIY crossbow

  • Step 6

    Assembled crossbow. Bowstring stroke is 400 mm, caliber of bolt is 16 mm. A little photoset
    DIY crossbow

    DIY crossbow

    DIY crossbow

    DIY crossbow

  • Step 7

    I made bow more tough, tension of loaded crossbow is almost 50 kg now. Oo. I need a bracket, it is impossible to arm crossbow without it
    Test shooting: 120 gramm bolt flown 60 meters and stick into stoned dirt on 40 mm.

  • Step 8

    I made a bracket and cover nose of crossbow with steel
    DIY crossbow

  • Step 9

    Also I made a bracket for trigger
    DIY crossbow

    I told about engraved pattern, so let's do it!


  • Engraving a pattern


  • Step 10

    I don't know what it is, but I used it in engraver =)
    DIY crossbow

  • Step 11

    I decided to train a little bit
    DIY crossbow

    DIY crossbow

  • Step 12

    I filled engraved path with syringe of paint. Awesome!
    DIY crossbow

  • Step 13

    I made aluminium plates
    DIY crossbow

  • Step 14

    Polish them to mirror shine
    DIY crossbow

    DIY crossbow

  • Step 15

    I will engrave pattern like this
    DIY crossbow

  • Step 16

    Engraved and polished patches
    DIY crossbow

    DIY crossbow

  • Step 17

    Attach them to crossbow with nails
    DIY crossbow

  • New diy crossbow bolts


  • Step 18

    Thick-walled stainless steel tube was fastened in the lathe and treat one edge like a bullet tip
    DIY crossbow

  • Step 19

    So that's my new cool bolt, looks deadly
    DIY crossbow

  • Step 20

    Body is covered with protective paint for wood. And here is a final photo of my diy crossbow!
    DIY crossbow

    DIY crossbow

    Author: imbahel

VideoVideo

Some video with my diy crossbow

ResultsResults and tips

  • The crossbow is very beautiful, as picture in a book
  • Bolt caliber is 15 mm, length 400 mm.
  • With the 20-meter distance break through the thickened sheet of roofing iron

Tags: crossbow

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  1. <
    Aivar

    16 April 2016 20:04

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    Видел в Интернете интересный способ изготовления древка для болтов - заготовку прогнать шуруповёртом через лерку на 15мм. Получается ровный деревянный болт с резьбой, резьбу можно за тем наждачкой убрать, или оставить.
    Dislike +2 Like
  2. <
    dimalc

    1 June 2016 16:05

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    Thanks for this topic !)
    Could you describe a little more your new trigger mechanism ?
    I made a sample in pvc and i have an issue.
    When pressing the trigger, the spring affects the lever, who then blocks the wheel in position.
    Dislike 0 Like
  3. <
    Jens

    24 February 2017 14:13

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    Hey, in Step 10, that is a centering drill.
    Dislike 0 Like
  4. <
    Dan

    22 March 2017 06:04

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    What is the draw length?
    Dislike 0 Like