We’ve featured Joerg Sprave on Geek Native before – how could we not. For a starter you could check out his Gatling slingshot and then move on to his machete firing slingshot. Yes, he has hurt himself with these inventions.
That’s why I bring up his latest invention with some concern – but also with a chunky dose of “this is so cool!”. Joerg has worked out how to have a slingshot fire circular sawblades. These blades rotate as they spin. The video includes some slow motion work and the death of a melon.