Super Simple Knex Blow Gun

About: I am an 18 year old from luverne MN, and I love to spend my spare time playing with knex, Legos and my xbox. I also enjoy hunting, airsoft, and swimming.

This blowhard gun is probably the simplest knex gun out there. I shoots small green rods ( at least that's what I use) and has a range of about 30-40 feet.
Pieces needed:
28 Gray connectors
1 long Gray rod

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Step 1: Construction

Take the gray rod and all the gray connectors and assemble them as shown. And you are done. All that is left is to shoot it.

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    8 Discussions


    3 years ago

    Instructions were not clear enough to follow. I got my foot stuck in a toaster... :|


    Reply 4 years ago

    Haha. Yeah I tried to make it longer, or use different pieces, but this surprisingly got me the most power. If you find a way to make it more powerful, please tell


    Reply 4 years ago

    Have you already built a prototype for that design? If so what is its range?


    Reply 4 years ago on Introduction

    maybe try using angle joints and staggering the rods? You could then have one fairly airtight tube all the way along but make it a bit longer