Here's my workbench. It's 4' 1 1/2" x 8' 1 12" with a 16 guage steel top. It's a torsion box with MDF top and bottom and a 1 x 2 internal frame. It's not quite dead flat, so I am considering rebuiling it. I also will be adding T track on the 8' sides to be able to clamp a straight edge across the table where ever needed. The base is made from two heavy duty shelving units I've had for a long time.

Scott