It all started with me putting up my first drawing on the wall and on to the feet and legs. I used a pair a very large washers and grade 5 bolts and after welding, I chucked them up in a buddy's wood lathe and ground them flat and true. I used .5" plate and welded a nut on the back side and then welded the plate onto the legs. The legs are 3x3x.25 wall tubing.