Building a garage workbench begins with making the right dimensions for the bench. Find a quality bench top of the right size, and cut four legs of equal lengths. Cut four braces of the same width if you want your bench top to have a frame underneath. Place top leg braces on a pair of legs, and bolt them together using a drill bit.
- Find a bench top
Make your bench top using either thin hard wooden sheets for industrial bench tops or few pieces of stacked plywood. You can also salvage a solid-core door if you want a thick, sturdy bench top. You can find the salvaged door at a rebuilding centre, or from any building undergoing renovation. Ensure that the work bench is flat and sturdy.
- Cut the legs
Cut the legs according to the desired height of the bench. Cut the four braces, and position each top leg brace on a pair of legs. Close the holes by sliding washers over the ends, and tighten them using a wrench and nuts. Bolt the bottom leg braces to the legs, and cut two tops of a length equal to the bench top.
- Attach the work bench top
Lay the pieces, and drill bolt holes through the supports. Screw the coach bolts into place securely, and attach a low shelf, if desired. Bolt thick bench tops from the bottom to keep the bench top bolt-free and smooth. Finish the bench by sanding it and applying varnish or polyurethane.