This is my take on Marc’s assembly table. I had been contemplating what to do for a replacement bench for a couple of years. It was not until I saw the assembly table Marc had built that I decided to combine the features of a work bench with the features of an assembly table. It was this idea that actually ended up saving space despite the fact this new bench is larger than the two it replaced combined. It measures approximately 81″x 51″x 36.5″. The base is walnut, the panels are birch ply and the joinery is mortise and tenon. The top is a seven inch thick torsion box, wrapped in walnut, and includes two vises with the requisite bench dog holes. The bench dog holes presented a problem because I did not believe MDF would be substantial enough for the dogs to react against. Therefore, I glued walnut blocks in wherever a hole was intended. Blocking the dog holes also had the added advantage of not turning the top into a time capsule for every small part I set on the bench. Finally, I have a surface big enough to assemble a large project without the assistance of shims and saw horses.
**UPDATE** Patrick sent in a Sketchup file that details the construction of the torsion box and the role of the solid wood dog hole supports. Download Sketchup File