This spring-driven flying helicopter toy uses a ratchet crank mechanism to wind up the spring and launch the rotor into the air.

Print settings.

I use PETG to make springs and gears, and PLA to make watch cases. It's suitable for spring floral patterns with enough wall thickness, which eliminates the need for infill. This is for strength.

Filament - PETG

Nozzle temperature -245℃

Bed temperature -80C

Printing speed - 160 mm/second

Contraction - 1.2 mm @ 40 mm/second

Support - Yes, it's everywhere.

Filling material - 15%

Fiber-PLA

Filling material - 15%

Nozzle temperature: -210℃

Bed temperature -60℃

Support - everywhere

Floor height - 0.2mm