This is a simple propeller I designed to mix painting with a power drill. The outer ring protects the propeller and gives stability. It has an flat face for easy printing without support.

Dimensions:

• through boring 5mm
• outer diameter 40 mm
• height 10 mm

You can adjust all parameters as you please in the FreeCAD file. ;-)

Print instructions

Print settings:

• 4 Perimeters for Vertical shells makes it like 100 % infill
• Layer height 0,2 - 0,15 mm