Cut 1-by-2-inch plywood beams into two 36-inch beams and two 26-inch beams using the circular saw.
Create a rectangle 36 inches high, 24 inches wide and 2 inches deep by arranging the two 36-inch beams parallel and the two 26-inch beams at the top and bottom. Use a small amount of wood glue to affix the beams at the corners and clamp them together while the glue dries, usually two to three hours.
Remove the clamps and insert four 1-inch wood screws, one in each corner, using your drill.
Place the frame of your bass trap in the center of a 50-by-38-inch piece of porous cloth such as cotton.
Wrap a 1-inch-thick, 36-inch-tall, 24-inch-wide section of Owens Corning 705 semi-rigid fiberglass in one layer of muslin and place into the frame.
Fold the short ends of the cotton fabric over the wood frame and wrapped fiber-glass and use a staple gun to affix the cloth to the frame by alternating corners. Pull the cloth taut and pull the fold the long end of the cloth over the rest of the frame, stapling the fabric to alternating corners with a staple gun.
Determine the minimum number of bass traps you need by assigning one bass trap to each corner of your studio and one every 6 feet in between and one behind your mixing console or recording deck, if applicable.
Use fishing wire to suspend one bass trap in each corner of your studio approximately 2 to 3 inches from each of the convergent walls. Suspend your corner bass traps about one-fourth of the distance from floor to ceiling off the ground.
Use fishing wire to suspend one bass trap for every 6 feet between the corners of your studio approximately 2 to 3 inches from the wall. Suspend each intermediary bass trap midway between the floor and ceiling.
Suspend one bass trap horizontally directly behind the mixing console 2 to 3 inches from the wall.
Suspend one bass trap directly above the mixing console 2 to 3 inches from the wall.