This Strange Lock can be opened with a Carrot? 3D Printed “Rack Lock”

This is my recreation of a “Rack Lock”, an unusual lock design which seems to originate from Russia. In this video I’ll show you how it works and how I reverse engineered and 3D Printed a working model! Get the models here: Simple version – Two bolt version with source file – Oldest lock design ever found – Support Maker’s Muse on Patreon 50 3D Printing Tips and Tricks – 3D Printing Essentials – Read more: