I used you as inspiration–but boy–I wasn’t ready for just how chonky it would be.
- 44” high
- 1/2" mdf (split)
- 4x4 top skirt
- 2x4x2 central spar
- 2x4 gussets (added racking protection)
- 4x4 legs
- 2x4 lower skirt (save a little weight)
- 4mm braces
- Rockler removable casters
Kept the middle open for rolling cabinets or storage. It’s got enough meat I can build other things in later. Incredibly stable and really heavy–but at least when it’s popped up on wheels it glides really effortlessly. It almost wanted to walk itself out of my workshop. 
Thanks again for the idea. Saved probably $150 over a pre-measured solution and this Haus will be with me for a while. 