Aero bell

keep trying to scare the birds in my garden (it can also annoy your neighbors (that can be an advantage or disadvantage))

material :
1 x screw M6 x 35
3 x bearing 606ZZ (6 x 17 x 6 mm)
70mm threaded rod M6
1 x screw M3 x 30
2 x screw M3 x 10
4 x carpenter nails 2 x 30 mm
bell reception dia 70 x 30mm


note: degrease all bearings and grease again with very fluid oil (sewing machine oil)

print:
helix: layer 0.3mm | outline 1 | bottom/top solid layer 40000 (full)
worm: layer 0.15mm | outline 1 | bottom/top solid layer 40000 (full)
gear: layer 0.15mm | outline 2 | bottom/top solid layer 5 | fill 15%
other: layer 0.2mm | outline 2 | bottom/top solid layer 5 | fill 15%



https://youtu.be/BOLX_3Om11E

https://youtu.be/rWcJ6BgFs3g