I based my bed off of the Fillman Platform Bed plans. Just bumped the dimensions up to fit my mattress and added the mid supports. The frame was built using 2x6 boards taken from a fallen barn. I ripped 2 2x6 boards down the center to make the the supports for the slats. My feet are 3 2x6's screwed together and then attached to the frame. Next time I will cut a notch out of the feet so that I can rest the bed on them and then try to find some old lag bolts to attach them to the bed. The frame was put together using a Kreg Jig. I put the Cedar boards on to dress the front and sides up some and to help keep the slats from showing when the sheets were tucked in. My finish is 1 coat of Linseed Oil and 2 coats of Teak Oil.
Let me know if you have any further questions on this build. As soon as I find some doors I will be building a head board for this bed.