I made this from one lightweight pallet I got from work. I marked the curves on the supports and cut them with a jigsaw. Then I cut the treads 250mm long so I could get three treads out of one length to save on waste. I braced the supports underneath with off cut batten; I made sure the frame was square and then fixed the threads with nails. I then varnished with two coats of colored varnish. It took about 2 hours to make and paint it.