Summary

A spare Blade for the QS5010 Helicopter from Banggood: https://www.banggood.com/QS5010-Super-Mini-Infrared-3CH-RC-Helicopter-With-Gyro-Mode-2-p-941286.html

Instructions

Printed in PLA (.2 Layer Height, 20 Perimeters(You don't need that much perimeters but it looks nicer in the end))

Take the flat printed piece and hang it into boiling hot water. Let it sit for a few seconds then take it out and use the other intact blade to form the new printed one.
Just lay them onto each other and it will form a perfect blade.

QS QS5010 Helicopter - Spare Wing