Designed this simple dice tower to print comfortably on the Monoprice Select Mini, so it is in three pieces. The base of the tower and the tray fit together quite snugly but can still come apart and are meant to be printed right side up. I used supports for the base section, to make the arch look nice. Print the top upside down and no supports are needed. The groove around the top of the base should hold the baffle section in place, but I glued mine to keep it sturdy. There are three angled baffles inside, as well as a top funnel section. The sound is wonderful as the dice fall.