With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts.
Here is my arm cannon, it doesn't shoot very far yet. Just wanted to see if you guys like it. If you do I'll make it better and ...
Knex Arm Cannonby nerfrocketeer
knex ss cannonby knexinventer
Knex Cannonby KnexFreak360
Knex Cannon with a stability baseby FireDragon
Let your inbox help you discover our best projects, classes, and contests. Instructables will help you learn how to make anything!
© 2016 Autodesk, Inc.