Dusty,
I did some research on this idea a few years back. The only problem with using plastic lumber is that it tends to sag if the space between supports is too large. Using 3/4" lumber (which would match the thickness of the original bedwood) you need supports on a maximum of 16" centers. The space between the bed sill supports is much greater than this. If you could work out some system of additional support on the underside, I think plastic lumber would make a dandy bed.


Jeff Nelson

"Beer is proof that God loves us and wants us to be happy." - Benjamin Franklin
"Always do right. This will gratify some people and astonish the rest." - Mark Twain