Swivel Jammer / ISO / Lever Arms
Jammer arms / ISO arms / Lever arms have been requested more than anything else on my list. I started working on a DIY version and came up with something that does not currently exist in the home gym marketplace - Swivel Arms! Rather than operating in a single plane of motion, these arms can move in all directions opening up a wide ranger of movement options.
Full detailed instructions with tools, materials, and cut list can be found here: https://garagegymexperiment.com/2021/09/28/diy-swivel-jammer-arms/