Used this idea of the "3/4' threaded rods" as well getting the idea from the DIY forum, tearing apart a huge oak table (1900 circa), cutting, then reassembling making five levels. But heavy as all get out!
Had to put some big sliders under the acorn nuts on the bottom in order to move it. Four same-type nuts on top to finish off the rods. You have to build a jig in order to drill the holes or they will never line up when putting the rods through the various levels.
Looks good. Solid, with lots of space. And a lot less expensive in the long run.
For what it's worth.
Q