I am ready to replace the top of my workbench with a dead-flat Torsion box to ease assembly of future projects.
I built my current workbench a couple of years ago from plans from Fine Woodworking. The base is made from laminated plywood and is very solid. I filled the inside of the base with 6 drawers which are full and work well. The top is 2 sheets of 3/4 material that has served its purpose, but is far from flat.
Part of the problem (non flatness) also stems from the fact that I have a heavy vice on the left side of the bench. This is mounted on the underside of the top, that is overhanging the base. So, the weight of that vice pulls the top down and bows the whole surface.
So – I am going to replace the current top with a dead-flat torsion box. I plan on re-mounting the vice to it, but will add support legs on the other side to help support the vice weight.
The plans for the box are from The Wood Whisperer. His instructional videos are awesome and it’s where I first learned of the idea.
I will post as I make progress and take pictures, and hopefully some video, along the way.
-- Morton - http://workshop.scottmorton.com