How to Make a Paper Crossbow [HD Video Tutorial]

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Introduction: How to Make a Paper Crossbow [HD Video Tutorial]

I noticed that there was no decent tutorial out there for making a paper crossbow that didn't utilize rubber bands. This is what I came up with as a result. The crossbow is actually quite durable in design and should stand up to use for for a very long time so long as it doesn't get wet. Hopefully a good deal of office boredom can be solved with this.

The working mechanism for this crossbow is in the arms made of rolled paper and supported by tape. Typically a bent tube of rolled paper would tear when bent, but a layer of tape seems to distribute the load evenly enough to not only prevent the paper from tearing, but also give it a strong and fast spring action when released. This allows for a rigid bow string to be used which utilizes the energy in the arms to propel the projectile - Rather than most toy crossbows which use rigid arms and an elastic band which propels the bolt more like a slingshot than a crossbow.

This crossbow can throw a pencil or pen a good 100 feet. A possible modification for even more power might be to make two arms on each side that the bow string would tie together at the tips. Having double arms is about the only way to go about adding more power because adding much more paper to the first set will only result in them tearing or being completely rigid. Similar to how you can only fold a piece of paper so many times.

Have fun!

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    38 Comments

    I think I have seen your video on YOUTUBE.

    Cool instructable!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    You have seen paper now wait for card stock! ;)

    What do you mean?

    card stock would be much more springy than flimsy paper thus producing way more power behind the bolt

    I made this a few years ago during a high school study hall where I had nothing better to do. It turned out pretty well. I modified the trigger with a bent and broken paperclip and I covered that one in orange duct tape in an attempt to make it more water proof, because we all know the dangers of high school lunch tables.

    I now want to make another one and improve on the design to make it pack more punch. Longer more flexible arms, better string, custom made darts, that kind of thing. As I make my Mark II I'll be posting it on instructables and I will mention your name and also have your video linked as reference.

    Thanks for making my high school study halls so much more constructive while also freaking out the monitor.

    AAWWWWWWSSUUUUUUUUUUUUUMMMMMMMM!!!!!!!!!!!!!!!

    I like this but it doesn't fire at all.

    having a flap doesn't help rolling it stuffed up my paper