This is an improved version of the Carabiner by walter (Thingiverse)

I loved the original design and created a version that works with plain PLA. I modified the spring section to reduce the stress concentration using Finite Element Analysis. The new design should work with other brittle materials as well.

Print Settings

Printer Brand:

Anet

Printer: 

A8

Rafts:

No

Supports: 

Yes

Resolution:

0.2 mm

Infill: 

25 %

Filament: PLA white

Notes:

• Make sure to print the spring section with solid infill.