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…

A Chef's Knife Made From Plastic Wrap Proves Everything in Your Kitchen Is a Blade Waiting to Happen

You might think the most dangerous part of a roll of plastic wrap is the metal cutting blade on the package, but another hazard lurks within the roll itself. After turning aluminum foil into an functional blade, Japan’s most talented knife maker has now demonstrated how a roll of regular food wrap can be hardened,…

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