Hi there,
I just took a stab yesterday at making a simple e-liquid shaker machine. The inspiration was lab equipment that rotates tubes (apparently called a tube rotator machine?). It can blend 1-4 30ml bottles at a time. I wasn’t sure if I’d get more than a proof of concept but it actually works well and I get much better blending than by hand when inspecting under UV light (no “clouds”). But overall it was a fun little project I thought I’d share.
Short clip: https://www.youtube.com/watch?v=8RkYxiZtDV0