[Russell Sobie]

That's... that's really good. I might be able to do that. It's not 80/20, which is extruded aluminum. This is stainless steel channel strut, which is heavier but way cheaper. The weight is actually a bonus for this concept since it's pretty small and the only thing really holding it down is gravity and one wheel on my office chair.

I'm going to mock up your drawing immediately. The goal is to buy parts and make the steel cuts tomorrow at a friends place.

Edit: Well, it turns out I can't rotate the wheel up at all with its placement in front of the television. There's almost no clearance. Was a cool idea, tho.

Your wheel will wobble in almost every direction. There's no triangulation and the joints aren't rigid enough to prevent substantial flex. The base of the two uprights will almost certainly be a failure point in the long term. Sorry I don't have a suggestion for you but this design is just bad.

As stated above, this is not aluminum extrusion. I think there will be very little flex with steel channel strut and the associated steel brackets... if any. However, you got me worried a bit so I went back and looked at the first place I saw this idea, and this guy had an angled bracket along the inside for his wheel post (which was a single cantilever, rather than a full cross post).

https://www.isrtv.com/forums/topic/21321...ternative/

I can see about incorporating a similar bracket type if I can procure one... and if not, use a 3 hole 90 degree bracket on the outside for additional reinforcement.