'Match the knives' rotation to the distance so the tip hits the target. But in practice it's hard. There are so many other ways the knife can hit the board and I've found all of them.'The YouTuber proceeds to demonstrate this fact with a board that gets hit from all sides by incoming knives. He then adds that even if he gets some success with a specific distance, changing this distance requires him to start the process all over again.'Cutting edge technology should do this easily if we can keep it from destroying itself,' warns the YouTuber.

https://interestingengineering.com/diy/youtubers-make-laser-sighted-fully-automatic-knife-throwing-machine-gun

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