This is a simple little collapsible workbench/assembly table I made. The dimensions may seem strange but it was as large as I could get it while still fitting under my current one. It also is tall enough so that the surface of the mitre saw when it is up there is level with my big workbench, allowing my to easing cut long boards. This can easily be adapted to be a sturdy, permanent workbench with only a few extra bolts.
22" Wide, 35" long, 33 1/2" Tall
You will need:
1-2'x4' Sheet of 3/4" MDF
1-Box of 2" or 2 1/2" Wood Screws
Material for the Apron (the part right below the surface)-the dimensions don't really matter, but I ripped a 1x10 in half because that's what I had on hand. You could use 1x4s as a cheap alternative.
Total Cost Not Counting Apron or Wood Glue: