I made the shelves after the bench was constructed and put into place. These shelves just sit on top of the bench for now. I got the idea for the shelves from this video: I used 1x8x8 for shelves and still have 23” of work space on top of bench. You It took my girlfriend and I to lift the bench upright after I constructed it and put into place. I may afix it to the back down the road when I finish the basement and/or decide to paint the bottom of the bench and shelves. Sent from my iPhone using Tapatalk