This design was inspired by the 2013 Mac Pro. In my smaller projects, there is a wall mounted computer that i has built but that case was rather large. I wanted to go in the other direction and make a case that was very small, compact, and discreet. There is one fan at the bottom to help with natural convection. The diameter of the cylinder was set by the length of the graphics card. I specifically chose to get this one since its the shortest RTX 2070 available for purchase. The case's overall dimensions are 240 mm diameter by 292 mm tall. All screws go into threaded inserts or bolts and the only glue is used for the front panel USB 2.0 ports. The top of the case twists and locks onto the bottom.