When cutting sheet goods or assembling a large project,
an extra work surface sure comes in handy. But I don't have room in my shop for
a permanent "fixture."
So instead, I use a work surface that "knocks down" in
seconds. The key is a pair of metal joist hangers attached to each of my sawhorses,
see photo above. (Joist hangers are available at most home centers.)
The hangers act as "pockets" that hold a couple of 2x4
stretchers, as shown in the drawing below. Fitting the ends of the stretchers
down into the joist hangers creates a large, sturdy work support.