Balloon catamaran boat
thingiverse
This is a balloon-powered catamaran boat. You can add a balloon to it and it will move on its own! Check out my first balloon boat: https://www.thingiverse.com/thing:2800309 And here's more information about my new catamaran boat: http://3d-pechatnik.ru/content/3d_print_portfolio/igrushki_na_3d_printere_dlja_detej/katamaran_na_3d_printere
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