Two Blade Propeller
by mechadense, published
This thing is fully parameterizable and ment to be customized before printing.
It is optimized for supportless printing (blades are oriented vertically)
and designd out of two parts so that even on small buildspace printers pretty big propellers can be made.
Some ideas for improvement:
add grooves for ball bearings
design a fitting weather vane and a fitting mount
add butten-cell powerd laserpointers to get a free lasershow at squally new moon nights
generalize to 3 or more blades (4 noncoplanar should be easy)
alter the blade shapes to something less classic but more fancy
mount (suitable!) whistles to the tips (so your child wont be overheard when cycling), but don't forget the (slidable?) muting plugs then.
Or you might wanna go crazy and do something like this:
right now its just a toy but one could:
modify the blade to a more aerodynamic teardropshape
twist the blade
make a coupling for a dynamo
make the bladeangle physically adjustable
print a lot of them all with different random parameters in reasonable margins and mount them on a kind of "wind sculpture"
Again: the appended stl is only an example!
Print diagonally on build plattform for maximal size.