Pneumatic arm hammer. By Nevon Projects. 2:07 video:
https://www.youtube.com/watch?v=oVUl9izuo50
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Pneumatic arm hammer. By Nevon Projects. 2:07 video:
https://www.youtube.com/watch?v=oVUl9izuo50
A lot of these are great ideas, but it seems like a lot of work to reinvent the wheel. What is the point other than a tour de force?