4ft x 8ft foldable workbench with wheels - full build

This video shows you how to build a large 4x8 rolling workbench with folding legs and a smooth polyurethane surface. All the steps, parts and tools are included. Wood cuts are at the bottom of the description. And this puppy is heavy and solid so don't let it fall on you when assembling. BTW, 2x4s are not really 2in x 4in.
Total Material Cost: $260 - not including my time and tools
Parts:
1 sheet 4x8 3/4" cabinet - quality plywood
13 8ft 2x4s
4 caster wheels - rated 250lb
1 box 2.5in wood screws - T25 bit usually included
4 bolts - 5/16 x 5in
4 bolts - 5/16 x 4in
8 5/16in washers
4 5/16in lock washers
4 wingnuts 5/16in
16oz bottle of wood glue
4 hinges - 2.5in
Minwax glossy polyurethane
60 grit sandpaper for rounding leg pivot points
220 grit sandpaper for sanding surface after first polyurethane coating
5 or 6 paintbrushes
old shirt to wear when applying polyurethane
Tools:
tape measure
carpenter's triangle
pencil
compound miter saw - 10in
circular saw - 8in
2 clamps
hand held sander
drill
1/16in drill bit
1/4in drill bit
5/16in drill bit
drill bit block - optional
patience
Wood cuts:
4x8 plywood is full length - trim 1in from all corners
2 frame inner braces lengthwise - 39in - 04:21 in video
2 frame inner braces side-to-side - 39in - 04:21 in video
4 legs - each made from 2 2x4s - glued and screwed together. - 33 1/4in
2 leg braces - 39in
2 leg stops - 42in
2 frame end pieces - 39in
2 frame side pieces - 84in
1 leg stabilizer - 81in
2 leg bottom pieces for caster wheels - 39in
1 side piece to support plywood when folded - 30in