Assemble the bed frame to accommodate the two twin box springs. Pliers may be needed to tighten any screws.
Place both twin box springs on the bed frame and then position the twin bed mattresses on top.
Wrap the ratcheting lashing strap around the perimeter of the beds; slide the end of the strap into the ratcheting mechanism and pull through.
Ratchet the lever mechanism up and down, as this action will tighten the lashing strap around the bed. The tightened strap will keep the twin beds together and prevent sliding or separation.
With the measuring tape, measure a 1 foot wide by 100 inch long piece of egg carton foam and cut out the piece with scissors.
Position the foam lengthwise down the middle seam of the bed where the twin mattresses meet. Tuck the ends of the foam under the lashing strap holding the mattresses securely together.
Make your bed with the king-size bedding.