I've thought of building one of these for quite awhile now...read how some say they work and some say they don't work. A post by someone I follow on Instagram, @fixthisbuildthat, built one over the weekend and that gave me the push I needed to try it. I built it out of scrap MDF, pegboard and ply I had laying around so if it doesn't work I'm only out my time.
I'm not going to try it out until I get my .5 micron filter for my dust collector which should be here Friday. It's 42" x 22" simply because that was as big as I could go with the scrap I had. From google research, I think some of the pegboard holes need to be made bigger, but will wait until a trial run to see. I have about a dozen cutting boards that need to be shaped and sanded so it will get a good workout this weekend and I'll let you know how it goes.