I recently built this stand for my planer and benchtop jointer in order to free up some workshop space. I inserted a 5/8" steel rod as an axle and at each corner is a 3/8" bolt and wingnut. When I need to change over machines, I just remove the bolts, flip the top over and re-install the bolts. This isn't an audio project, but just a change of scenery for the DIY forum.