Helical windmill
cults3d
I designed a mini wind turbine that can generate some electricity, inspired by YouTube tutorials. The helical shaped propeller is a key part of this design. Currently in testing phase, I'm very pleased with how it's performing compared to other systems - it seems to be highly effective. To build this model, you'll need 3 small bearings that are 10 mm in size, 2 wood screws, and a printed bearing for the base, which can be found here: https://www.thingiverse.com/thing:53451. The rest of the parts come together using small pieces of 1.75 mm filament and glue.
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