Nice looking rig!!!! I really like it.
I'm gonna tip my hat your way, very nice fab work. And I love the TM table, would that be a 4x4? One day I will have the money and the space for a nice cnc table. (I Hope)
If you ever make another rig or get the urge to change it up a bit, I saw a really cool set-up for revolving shelves without the center post. He used more or less 3 bearings on welded studs at equal points in the pipe. Then he took a shelf similar to yours and rolled a ring to the outside dia and welded to the shelf. The bearings have a groove for the rings to rotate on. It looked really cool being able to have use of the full shelf and still have it rotate.