Diy Bed Swing . The other ends of the rope need to be attached together with a carabiner. I’m sharing printable building plans below for both a twin and a crib size mattress porch swing in this design. Build a Bed Swing Porch swing bed, Outdoor hanging bed, Outdoor bed swing from www.pinterest.com Next, attach 2x4s as the four corner posts for the daybed’s armrests, making sure the back two are flush with the back inside corner of the frame. This video focuses on the build, after watching be sure to check. The design is super quick and easy to build with pallets and 2x4s.