Sorry for the delay in my reply. My plinth is 6-1" MDF segments stacked, with top, sides and face fashioned out slabs of Purpleheart, faceplate is 1" thick, top and side pieces are 3/8" thick Purpleheart as well.
I mounted a Dynavector 501 arm, and used Edensound Bear Paw footers that are 6lbs. each, one in each corner. Parts are available on Ebay from Perfect Sound in the UK, and other places.
You can get a look at it on Virtual Systems under Done For Now, "The Summit". It is a fine, fine thing.
Bes