I am new to instructables but I do youtube videos. I will post my step by step but I don't have any photos so watch the video for visuals! :)
Step 1: Flip Your Box Springs Over So the Bottom Is Facing the Ceiling
If you have a king size box spring with two box springs this tutorial is for you! If not skip ahead to after I braced them together.
Step 2: Cut the Wood Braces.
I personally did 2x4 pieces of wood and bought I think 10 or 12 feet. The sizes and quantity cut are:
4 8 inch length braces.
1 6 foot length brace for the middle.
Step 3: Drill Holes in the Wood for the Screws to Screw Into.
Not sure if this is completely needed but it definetely helped when I got to the next step.
I had two inch nails and obviously that wouldn't go completely through the 2X4 and the box spring.
So I drilled with an 1/8 inch drill bit for the guide all the way through and a 1/4 inch drill bit to make it so the screw could go in 1/2 inch farther into the 2x4.
Step 4: I Then Screwed the Braces Into the Box Spring Frame.
I did have my Husband help me hold the two frames together, to minimize any gaps.
Step 5: I Stapled the Fabric Onto the Box Spring.
Double triple or quadruple the thickness of the fabric if you can still see the box spring showing through. I folded my fabric three times making it four layers of fabric.
Step 6: Lay Out Your Top Plates.
I used 12 top plates 4 on both sides and 4 in the middle. These will make it so you can attach the legs.
Step 7: Screw Your Top Plates Into the Bed.
Make sure that the box frame wood has no gaps between the top plate and the wood.
Step 8: Attach Your Furniture Legs to the Top Plates.
They just screw into the top plate.