How to build a simple Plasma Rifle aka Electrothermal Rifle by geckowil

Drones (Article) by howitgoes

How to Make Vortex Cannons by Kipkay

Homemade Stickers by SirBrittanicvs

Homemade Thin Mint Cookies by scoochmaroo

Sploosh by Jonathan Robson

Bargain-Price Book Scanner From A Cardboard Box. by daniel_reetz

Process of Making a Scrap Knife by cowscankill

Steam Powered Potato Pistol 1.0 by robbtoberfest

Purifying Potassium Nitrate (KNO3) by YoungPyro19

Cowscankill's Personal Knuckle Duster (Brass Knuckles) by cowscankill

Cardboard Laser Pistol ~ Fallout 3 Inspired by cowscankill

Homemade Steel Knife with Carved Handle by cowscankill

Making a Dagger from Found Materials! *UPDATE* by cowscankill

coilgun blueprints by eneergcam

camoflage bb gun paint job w/ silencer by evilgenius 398

FlintLock Pistol Replica by evilgenius 398

pumpmaster 760 mod by evilgenius 398

automatic blowpipe by totos

Model Gun from Cardboard! by cowscankill

The bolt banger by lasermaster3531

The Masterdude Knex Micro Uzi by Masterdude

The Plasma Speaker by Plasmana

Cardboard/Fiberglass Halo 3 inspired Master Chief Costume by rickgyver

How To Play Night Stalker, The Ultimate Glowy Tag by shammallamaman

How to make a paintball silencer by MrAngryPants

Mechanical Pencil Staple Shooter by n8man

quickmatch fuse by recyclebin

Pneumatic Golfball Cannon- Shoots 450+ yards! by MrCrowley

How to Sharpen a Stick with Fire. by bobolou2

The accidental pocket jet engine... by killerjackalope

How to Build a Catapult by T3h_Muffinator

How to Build a Knife by Basta

How to Start Fire with Water! by pudi.dk

Awesome led cube by AlexTheGreat

RF Jammer by drgabler

Giant Fresnel Lens Deathray: An Experiment in Optics by DrSimons

Coilgun Handgun by rwilsford07

25MM Pneumatic Sniper Rifle by irwinner

Golf Ball Gun!!! How To Make One That Can Shoot 400+ yards! by MrCrowley

Launch It! Contest Entry: The Alcohol Fueled Soda Bottle … by KentsOkay

How to Make Fireworks by pudi.dk

How to make a PVC pipe bottle rocket launcher by Kendallkip

Electronic Detonator by Tetranitrate

Jolt Egg Timer Detonator by Tetranitrate

Tennis Ball Mortar by Tetranitrate

Danny's knex m4 carbine working modle by knex hater hater

Rubber Band Gun "Silencer" Mod by Maxaxle88

My Knex Pistol with Sear-system Trigger by KentsOkay

5 Things to Do with Hot Steel, and Ideas for More. by Vendigroth

How to Forge a Throwing Knife by Vendigroth

How to Make a Fire Axe by Vendigroth

K3 knex pistol. *new* shooting system by twisted

Forge a Knife by jtobako

skewer sniper gun by assasin

Firecracker Line by diablothegreat

How to Make a small Gas Furnace by Vendigroth

begginers simple knex gun by knex hater hater

How I made A Curvy Fightin' Stick by Vendigroth

Knex Pocket-Handgun w/ auto-lock trigger (auto-lock optio… by Radiant Creator