Looks good bulldog. I built one 15 yrs ago and used 1/4 in thick tubing. The only problem I had was my slots in the tubing tearing out from pretty heavy use. I cut some pieces of 1/2" x 3/4" flatbar a couple of inches long and welded them as stops on the pressure points of my tubing. Topside front and bottomside rear. I was using mine as a root rake and it was under some pretty intense pressure. You may not need that but if you do, that was my cure.