The base has a raised circular boss almost the diameter of the table itself. The table is recessed to receive this boss. Table and base are through-bored to take the large pivot bolt, which I made from 1-1/2" steel bar stock. The bolt head fits into a recess in the top of the table. In a recess under the base, there is room for the nut that holds the bolt down: this nut is split and has a small clamping screw. When the nut is threaded on just right, the screw is tightened up to keep it in place.

Around the table's bottom edge is a dovetailed groove to accept clamping nuts that can act as stops to limit table travel. Around the edge of the table are four deep holes, threaded just at the bottom. These are for the tommy bar used to rotate the table. On top of the table are four radial teeslots.