The Spirabiner - Spiral Carabiner

I love 3D printed springs, and I wanted to include one in a carabiner for a while. After few rejected ideas I came up with this (cool?) inverted spiral mechanism that acts as the spring for a carabiner. I think it's pretty cool and wanted to share with you! Also, the opening of the carabiner is designed in a way to stay firmly in place : the only way to open it is to push – it won't slide in any other direction than the one its supposed to. 3 sizes for the win: small (61mm), medium (76mm) and large (96mm) Happy printing!