Measure the length of the of the box springs. Add 3-1/2 inches to the length and cut two studs to that length using a miter saw.
Measure the width of the box springs. Add 1 inch to the width and cut two studs to that length. Place the long studs on a flat surface with the short studs between them, flush at the ends. The studs should be standing on their narrow edges.
Drill three holes through each of the long studs at the end, penetrating into the ends of the short studs. Space them evenly, 3/4 inch from the end of the stud. Use a 5/32-inch drill bit and the cordless drill/driver. These are the pilot holes for the screws.
Place 3-inch screws in all the holes and drive them tight into the short studs using the drill/driver. You should now have a rectangular frame 1/2 inch longer and 1/2 inch wider than the box springs on the inside. The extra 1/2 inch width and length allows the box springs to fit inside with a bit of room all the way around, and will ensure that the box springs doesn't get stuck in the frame.
Place one 1/2-inch scrap block in each corner, and center one of the blocks midway between the ends on the long sides of the frame. You will be building the frame upside down, so the feet will stick straight up when you screw them on. Place one of the 4-by-4 blocks on top of each one of the scrap blocks.
Clamp the feet flush into the corners with a hand clamp. Place one clamp on each block standing midway between the ends. Drill two holes through the studs on both sides of the 4-by-4 corner blocks. Drill two holes through the sides of the studs to penetrate into the two center 4-by-4 blocks.
Place screws in all the holes. Drive the screws in tight, then remove the clamps. Pick up the frame, flip it over and stand it on its 4-by-4 feet. Place the box springs in the frame. It will rest on top of the 4-by-4 feet that are recessed down 1-1/2 inches. There will be a 1/2-inch lip around the perimeter of the box springs to keep it in place.
Things You Will Need
- 4 studs, 2-by-4-by-96 inches
- Miter saw
- Cordless drill/driver
- 5/32-inch drill bit
- 3-inch wood screws
- 6 scrap wood blocks, 1/2-by-4-by-4 inches
- 6 wood blocks, 4-by-4-by-12 inches
- Hand clamps
- The measurements are for an example. You can build your frame with shorter, or taller feet. If your frame is for a smaller bed, you may only need three 96-inch studs.