Firing This Saw Blade-Launching Handheld Catapult Looks More Terrifying Than Getting Hit by It

Joerg Sprave has finally built an elastic-powered weapon that even the burly slingshot master can barely handle when the trigger’s pulled. It’s a handheld trebuchet (a type of catapult) that flings circular saw blades for hundreds of feet, and it looks almost as terrifying to yield as it is to be in the weapon’s…

This Glowstick-Shooting Star Wars Blaster Replica Looks Like It's Firing Actual Lasers

Star Wars cosplayers of the world take note: Joerg Sprave, the internet’s favorite slingshot-designing mad scientist, has come up with a clever way to simulate blaster fire in real life. Instead of employing dangerously powerful lasers that will get you kicked out of a convention faster than you can reload, his…