YouTube description: On the river Rhine in Switzerland, there are reaction ferries: boats with no engine, no paddles, no onboard motive power at all. Here's how they work -- and a question about what... continue reading
posted by Aard Vark (oritteropo) 6 years 6 months 3 weeks ago • 601 views • 2:30search results matching tag: paddling
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I invented the Bow Blower, a combination of the bow drill and forge blower to make a device that can force air into a fire while being easy to construct from commonly occurring natural materials using... continue reading
posted by Mordhaus 7 years 8 months 4 weeks ago • 1,388 views • 4:32- 1