I found this work bench and worked from these pictures. Made a few changes on somethings, but generally stuck to this idea. http://lumberjocks.com/projects/96828
For the hinges this is how the hinges are on the walls
This is how the hinges for the legs work
Let me know if you have any...
I built a second folding work bench for my garage. The longer one is built to match the height of my miter saw so it can be used as an out feed table. Pretty happy with how they turned out.
I was going to use a piano hinge but I ended up using barn door style hinges. Both the work bench top and the legs use the barn door hinges. The feel stronger than the piano hinge I was going to use.