I built this cabinet last year, and it provides major storage for my shop. It lives on the left side of my SawStop ICS, and is slightly lower than the table saw height, so nothing catches.
Assembly Table - Cabinet 1.jpg
Assembly Table - Cabinet 2.jpg
It's large (both long and pretty wide).
The problem is, that it sags in the middle. Not a huge amount, but clearly enough to affect its use as an assembly table. So how do I fix this?
The cabinet is on 4" casters, as it does need to be moved if I want to run anything longer than 6' through my planer.
I've thought of replacing the casters with something smaller (? 3"), which would let me make a workbench top of 1.75" (It's 3/4" baltic birch plywood now). Perhaps end grain butcher block. Although that would be a ton of work and a beast to lift onto the table. And my wide-belt sander only goes up to 24" (my bad for buying the smaller model).
I've also thought of building a torsion box (but don't think I can generate enough additional height to do that).
The table top is now supported by a few vertical supports, and attached with L-brackets. I tried putting a screw jack under the middle of the table on the floor, but that doesn't seem to make things better.