Watch this laser-guided knife throwing machine nail 10 in a row

It looks like something out of a video game, but this gadget is real: a portable, mechanical, computerized, laser-guided knife gun that actually throws spinning knives end over end through the air (via Gizmodo).

This isn’t some slingshot or spiral Kunai shooter that flings those blades straight ahead, oh no — Quint Builds set out to build a gadget that can accurately throw knives just like a pro, nailing a target 10 times in a row at different distances. That meant painstakingly calculating how to spin a knife the right number of times to land tip-first, again and again and again — and employing a homemade lidar laser guidance system to measure that distance and adjust the knife’s trajectory accordingly.

Otherwise, a knife might...

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