HOW TO – Make a bottleboat submarine

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Gever writes – “Check it out, step by step instructions on building a high-performance submarine from recycled materials you can find around the house. This is one of the crowd-pleaser designs from the Maker Faire Tinker Challenge, broken down into easy to follow steps (with some digressions into echolocation in shrews, latin, and physics).”Link & photo set.

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