This is a tool changer that doesn't require any components, except for two 3D printed parts. I went all in on simplicity and these two 3D printed parts take 1.5 hours to print. The cool thing that blew my mind is that this mod can be replicated solely with the stuff that's in the box of the printer itself. It requires -1 screw and a bit of PLA filament and you've got yourself a tool changer for the Ender-3 S1! I show more about this mod in a YouTube video https://youtu.be/VrzHth2eN8E and on my website https://properprinting.pro/product/creality-ender3s1-simpletoolchanger/