Small windmill. Uses two 608 (roller blade) bearings. PLA or PETG. Blades are at a 45 degree angle and spin pretty quick in a light breeze.
No glue or screws to assemble, press fit all pieces. The bearings are tight, be sure and trim back any seams and “lips” on the edges. I used a hammer and block of wood to fit them to the body. The pedestal and fan press in by hand.
Blade prints flat, 40% infill, no supports or brim. Infill is primarily in the center for strength on the pin. You could go lighter if desired. Trim adhesion dots off the blades when complete.
Body needs 20% infill, prints as oriented, supports on build plate with brim.
Fin, prints flat, no brim. Can be scaled or make your own shape. 1.5mm thick. Adjust forward or back if needed.
Pedestal, 40% infill for strength on the top pin (it can be printed with less), vertical print for best results, add brim.
Pedestal bearing will need to be packed with grease otherwise the thing will spin on the vertical axis only. The grease adds just the right amount of friction. I used Super Lube synthetic grease. See attached pic.
Fan bearing needs small drop of light oil only, should spin free.
The author marked this model as their own original creation.
