Building your own plyometric box is a great way to save money on fitness equipment if you already own household tools. Even if you don't plan to practice jumping, plyo boxes are a great addition to your home gym for other exercises like step-ups and modified pushups. To build your own safe and effective plyo box, start with a small 12-inch high box and 2-square foot top surface. This size can handle hard use without the extra reinforcement needed to make larger boxes safe and durable.
Cut two lengths of 2x12-inch lumber board using a circular saw. Each length should measure 24 inches.
Pre-drill three holes into both ends of the broad side of each board using a drill with a 1/8-inch bit. The holes should be located 3/4-inch in from their respective ends of the boards. They should be evenly spaced and with the outer holes no less than 3/4-inch from the edges width-wise.
Cut two more lengths of 2x12-inch lumber board using a circular saw. Both of these lengths should measure 21 inches.
Drill 2-inch coarse thread drywall screws through the pre-drilled holes and into the ends of the 21-inch boards using the drill with a Phillips head drill bit. This will form a square frame with each side measuring 24 inches.
Cut a 24-inch square out of 3/4-inch plywood using the circular saw.
Pre-drill four holes on each side of the plywood square using the drill and 1/8-inch bit. The holes should be located 3/4-inch in on all sides.
Drill drywall screws through the pre-drilled holes in the plywood square and into the square frame. This will form the top of the box.
Sand all the corners and edges using 100-grit sand paper. This will make the box safer and prevent the wood from splinting.
Cut two squares of 1/16-inch rubber sheet using a utility knife. Both of these squares should measure 24 inches on each side. In one of the square rubber sheets, cut out a concentric square measuring 21 inches on each side. The resulting square ring will be used to cover the bottom of the box.
Glue the rubber square and ring to the top and bottom of the box respectively using spray adhesive to complete the construction of your plyometric step up wood box.