The entirety of this was made out of scrap wood in my barn from other woodworking projects. No need to waste valuable 2x4s then you have tons of scrap plywood and a gallon jug of wood glue. Drilled holes into the sides for the pipe. Holes consist of a larger outer hole and smaller inner hole. Pipe ends are threaded and screw tightly into the inner hole. I then drilled a bolt through the other side and filled the hole with epoxy before screwing the pipe in place. I can put my whole weight on one pipe and not even hear a creak and so far haven't seen any signs of failure and it's been in use for like a year or so now.

Sometimes I think I enjoy making all the weight lifting equipment more than the actual "getting fit" part. lol.

Stay strong comrades.