Flysky-FS-NV14 neck strap quick release buckle

This is quick release buckle for Flysky Nirvana NV-14.

Printed in PLA (or other material)
Layer 0.2
Brim, supports - everywhere, use roof/floor (cura) for better quality
Infil 25-30% for PLA, or 60% for PETg

What you need for assembly:
a) unused radio strap
b) 4xM3 5mm bolts
c) Strong ~6x18mm spring, regular 3D printer hot bed leveling spring will do the job
These below do not fit, but I will make changes to fit them. Will upload new stls soon.
https://www.aliexpress.com/item/10pcs-lot-3-D-printer-accessory-feeder-spring-for-Ultimaker-Makerbot-Wade-extruder-nickel-plating-1/32720394253.html
or
https://www.aliexpress.com/item/10pcs-lot-3-D-printer-accessory-feeder-spring-for-Ultimaker-Makerbot-Wade-extruder-nickel-plating-1/32719569686.html

Still in testing phase. Thing looks strong and secure. Will see how it will perform in the field.

Here how looks:
https://www.youtube.com/watch?v=OchZ0FJEk0I

If feeling unsecure you can take one long screw - it is possible to screw trough both end holes. Tighten arm holding bolts is not recomended as the spring will not work then.

To do:
Add spacer in arm hole, to separate both bolts. Now you should guess how tight to tighten the arm holding screws. Spacer should make you stop at rigth depth.

Update:
NirvanaBuckle_8.stl, made stronger but requires longer arm screws (7mmM3)

Update2:
For 7.5x20 springs (check reference to alliexpress).
One version hard to press, second longer arms - easier to press.
NirvanaStrap_Easy.stl
NirvanaStrap_Hard.stl
NirvanaStrap_Easy26.stl (for 26mm strap)