Custom Fine Furniture by Alan Young
A 1/2 inch threaded rod runs through the pedestal top through the bottom and nuts on either end tightened the entire assembly..
The center of the very bottom has a routed recess to allow space for the nut and washers
The underside of the top has a similar routed recess so it can staddle the nut at the top of the assembly.

Custom Fine Furniture by Alan Young
http://www.woodwardwoodworks.com
114 Woodward Ypsilanti, Michigan 48197
734 218-5803
alan@woodwardwoodworks.com