Cut the shelves to size using a table saw. See the notes for cut lengths.

Using your 1 1/2" spade bit, you're going to drill three holes through each 70" board and two holes through each 36" board. Your holes need to be in the same place on every 70" board and the same place on every 36" board since you are stacking them.

Stain your boards. We used Ebony stain, let that dry, and them used random Gray stain in various areas for a rustic look.

Begin building your industrial pipe shelving. Each shelf has a long piece of pipe, tee, a second piece of pipe, and an elbow as shown above. Screwing those all together will save you time! On this shelf, an 18" pipe went into each flange at the bottom, and then at the top a tee.

Stack the shelves, sitting each board onto tees and then screwing pipes in above. Work your way to the top, attaching flanges and screwing those into the wall to finish.