A couple weeks ago we showed you Clayton Will's DIY ice boat, which is driven via saw blade. It's a surprisingly effective form of locomotion, but the central design flaw is that there's no way for you to accidentally kill yourself, as the blade is tucked safely away behind the boat.
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To solve this problem, Swedish skier Erik Sunnerheim gets rid of the boat and the buzzsaw, replacing them with ice skates and a chainsaw:
For those of you keen to try this, I think the best approach is to keep traveling over the same circular path, again and again.