Archimedes Horizzontal Axis Windmill 01

I wanted to do some experiments with wind turbines of various types and then
I designed these windmills for a simple installation in the garden.
They are designed to be inserted in an aluminum rod Ø8 (usually Ø7.8/7.9mm)

Dimensions
large diameter Ø149 mm
h 118 mm
Internal hole diameter Ø 8.10 mm

When I printed it, I tried without supports with standard Slicer settings
and the high speeds of the bed and mainly the sudden direction changes caused some little layer shifting on the outermost ends of the blades.

So I prepared a .3mf file and the GCode with lower speeds.
if you think it is not enough, slow down further the printer while printing or print it with supports.
 

have fun