I have a tiny workshop, made smaller by the fact that I insist on stocking (hoarding?) a lot of materials for whatever project may come along. So to maximize work space when I need it, and floor space when I need that, I came up with a fold-flat table base to work on.

I build and sell a piece of equipment called Paper Drying Box, which is marketed to fine art Printmaking Studios and Papermaking Studios. www.paperdryingbox.com is the website if you want to see. To make construction easier, I needed a low rolling base to work on until the plywood top is attached to its final powder coated and welded base, something about 30" square and 2' tall. And then I want to put that base away when I'm done with a build. Makerpipe to the rescue.

This build is all T-connectors and some 1/4" threaded pipe inserts at the bottom. I cut four matching leg lengths at about 20" and added the inserts.

I then built two double-crossbar leg assemblies with regular t-connectors. To keep my plywood clean and unmarred, I fitted some pool noodle padding around the topmost pipes.

Then for the cross struts, I removed the grippy vinyl shrink wrap on the t-connectors and connected the leg assemblies together. With the vinyl shrink wrap removed the cross struts grip well, but can still turn on their uprights.

The wheels are just a basic double-locking set from amazon. You'll need them to match your threaded inserts. These are 1/4" size: https://www.amazon.com/dp/B0BXNGKNKY

Finally, to solidify the full package, I screwed ever connector directly into the pipe. This way the pipes can never work themselves loose while I'm opening and closing the base. I pre-drilled the connector holes (one per fitting) before assembly. If you have a drill press, that makes the job go much easier.

The final base is about 30" across, and then with a squeeze will collapse flat to about 4" across. I can hang this vertically on my wall, out of the way until I need it again. I had first planned this to be much more elaborate and complicated, with 3d printed pipe fittings providing diagonal strength and allowing for expansion, but this simple build is plenty sturdy.

The beauty of this simpler version is that it can be made in any dimension - 20x30, 30x48 - they will collapse down the same way.

I have other ideas for collapsible tables for various work spaces of mine. Maybe one day I'll have time to follow through on another iteration.