Anemometer Rotor with magnet mount

I did not had the intention of measuring wind speed. So its actually more like a toy

i was sad about destroying ping-pong balls so i made shell drawings almost like an eggshell yet bottom part is spherical and that part is 42mm in diameter

Thin shell has a 1mm rim and than shell it self is 0.5mm with 0.4mm nozzle extruding 0.5mm line with 0.15m layer height it is printable with some supports.


at first i have printed one of the bigger Anemometers( https://www.thingiverse.com/thing:4540340) but i needed a smaller one.

after experimenting i decided a light design with light bearing is better

while printing
for spinners they need to be as light as possible 2wall %20gyroid 3top/botton should be ok

for bearing interface (aka axis) i always printed them with lots of walls so they became %100 plastic

For mounting i wanted it to be as clean as possible so MAGNETS were great for me
i used magnets from old HDD lying around thy are usually pretty strong you can fit