Measure the available garage space
Decide the workbench size and height
Choose a sturdy design and load capacity
Gather materials
Gather tools
Cut the frame pieces to size
Assemble the base frame
Add cross supports
Install the legs
Level the frame
Attach the lower shelf if desired
Cut the work surface to size
Attach the work surface to the frame
Reinforce joints with screws or bolts
Sand rough edges
Seal or paint the wood
Add a vise if needed
Add drawers, shelves, or storage bins if needed
Check stability and tighten all fasteners
Place the workbench in position
Organize tools on and around the bench