I wanted six axis control over the position/angle of either half of my split keyboard, because I'm that kind of nerd. I was using 80/20 rail on a lazy Susan hinge for x-translation and x-rotation. Standing desk covered z-translation and y-translation I was considering using VESA pole mounts for y and z rotation, but 80/20 and VESA are different universes, and I've never seen a picture of them being used horizontally. Nor, so far as I'm aware, has the web contained text (until now) which indicates that they can be joined in the way that I wanted to join them.

A little fiddling with things in my garage and I discovered that the holes in the 80/20 rail line up with the U-bolt of the correct diameter for wrapping a VESA pole mount. So I used four U-bolts for the job:

https://imgur.com/a/vXLX4RA

I think that the only prompts that would lead ChatGPT to that conclusion are ones supplied by a human who already knew it. But now that I've published text that puts the concept into language, a future LLM might be able to suggest it.