I built this for my mom's guest room. She watched my kids and I worked in the garage.. couldn't have been a better vacation! :)
I used 6" (finished size 5") tongue and groove boards for the panel, shorter posts and screwed main structure pieces together using 5-1/2" lag bolts and plugging with 3/4" dowel pieces. I added woodedn blocks at the bottom of posts for attaching metal bed frame.
My dad didn't have any pipe clamps so I ended up using a wratcheting strap! HA! Use what you can and save money! :)