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How to Build a King-Size Bed Frame (page 1 of 2)

Get easy-to-follow instructions on how to build a platform bed frame.

More in Decorating

  • Time

    Several Weekends

  • Price Range

    $500 - $1,000

  • Difficulty

    Moderate to Hard

Here's How To Do It:

Step 1: Build the I-Beams

We constructed a king-size bed, adjust the lumber sizes to match the size of your bed.
First thing to build for the bed is the cross section. Start by building four I beams with 3/4" maple plywood at 6-3/4" x 80-1/2". Take your caps and place them over the center of each end of the vertical piece. When you look at these from the side, they form an "I" shape. Set two of these I-beams aside.

Step 2: Build the U-Beams

Make two U beams by using 3/4" maple plywood at 6-3/4" x 80-1/2". Add caps to the vertical pieces, only this time, make sure the caps are flush to one side. When you look at these from the side, they form an "U" shape. Set one of the U beams to the side.

Step 3: Assemble the Frame

Start putting the frame together by building the bed frame in two separate pieces, so it will be easier to move to the bedroom. Lay the I and U beams out with the U beam on the end, flush side facing outwards. Place an I beam 11-1/4 inches from the U beam, and then take the second I beam and place it 12-1/2 inches on center from that.

Step 4: Attach the Beams and Cap Pieces

Take one of the facing beams and place it across the end of the I and U beams, securing it with glue and nails. Repeat this process at the opposite end. Take two cap pieces and attach them between the two facing beams, one on top and one on bottom.

Step 5: Attach the Vertical Piece

Take the center vertical piece and attach it to the open end, securing it to the two cap pieces you just added. Repeat the steps above to make the second matching frame. Paint the outside of the frame your desired color.

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