With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts.
We have a be nice comment policy. Please be positive and constructive.
We noticed you attached photosto your comment.
Knex rocket launcher K.P.R.L. (Koenykoen's portable rocket launcher)by koenykoen
Ultimate K'nex Grenade- With Pin!by The Knexpert
Knex RPG (rocket launcher)by Doc Penguin
K'NEX Rocket Launcherby nerfrocketeer
Knex War Bombby I_am_Canadian
The F-1 Lego Grenade + Rocket Projectile Launcherby Bitterberry9
K'nex True Trigger Grenade Launcher: TCEGL29by ArceusX0
K'nex Roman Candle Shooter: The Caesar Shooterby nerfrocketeer
Knex Pansershreckby KnexFreak360
Under Barrel Grenade Launcher for the MARby Masterdude
Join 2 million + to receive instant inspiration in your inbox.
Download our apps!
© 2015 Autodesk, Inc.
By clicking "Create Account" you are indicating that you have read and agree to the Terms of service.
Already a member? Login »
Enter the email associated with your account and we will send you your username and a temporary password.
Not a member? Sign Up »
Want to go pro?
First step is to sign up.
By clicking "Sign me up!" you are indicating that you have read and agree to the Terms of service.