Knex Heavy Cannon Instructions

About: Hey everyone, welcome to my Instuctable, or my Instructables page. Well I hope you like what you see and if you do, don't forget to SUBSCRIBE. I like to build just about anything from airsoft guns to fishing...

Just posing instructions on my heavy cannon, it uses a lot of pieces sadly but gets ok range with the heavy round and amazing range with finned rounds. So get building!

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Step 1: Wheels and Axel

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Step 2: Stand and Assembly

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Step 3: Ammo Loading and Firing

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    15 Discussions


    8 years ago on Introduction

    I am going to get 13 POUNDS!!! of knex in about a week so I will build this soon Awsome Job 4.5*

    1 reply

    Reply 8 years ago on Introduction

    okay, until i get my 13 pounds of knex, I'll try make as much as i can and i have about 2 thirds of the barrel done and one wheel. i cant wait for more knex!


    I like how that barrel design is strong, but it makes it difficult to pull back the rubber bands. also, there is no picture that shows the entire cannon.

    1 reply