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Would a bigger motor make more power? I have a spare NEMA 17 that I would love to use in a new version of this turbine.

One issue i've run into is with the size of the base. I was unable to find anything to snugly fit into the diameter of the base. This is not a big deal because it got me to practice with TinkerCAD and make this coupler: http://www.thingiverse.com/thing:2163582. I guess i could've scaled your base file...

Also, the larger bearings were a little difficult to find ad a decent price. It was either spend about $15 EACH to get the quickly in the US, or about half that for all 4 to get them from China and have to wait like 4 weeks. (I screwed up and only ordered 2 the first time...now im waiting again for the other 2) So if there was a more standard size or anything that would make them easier to get, that would be nice.

These are by no means big issues, just the only thing i can think of that made it a bit of a pain to get this together. The actually printing process was great.

PS. I Also came up with these so the base can be stuck into the ground. It could make the turbine a little more portable, for camping trips etc. http://www.thingiverse.com/thing:2163572

Tower + Base Coupler for MKII Wind Turbine
by Doober
Ground Steak for MKII Wind Turbine
by Doober