This 43" tall, 46" square dining table assembles with no hardware or glue. It is incredibly sturdy.
The table is square because it promotes better community with no one placed at the head of the table and everyone equidistant, allowing for better conversation.
The table takes 2 4"X8" sheets of 18mm plywood. Most cabinet grade plywood from Home Depot is 18mm and inexpensive. The one in my home is made from high grade birch ply.
Please check out http://www.jeffreymatthias.com to see some of my other work.
Someday, I will alter the design to allow for an expanding top to accommodate 8 people.
I've added a photo of it in our home for an idea of how big it is.
There is a full diagram and cut instructions included. I will work on an assembly instruction set, but it is overall fairly intuitive.
Finish however you prefer.