Ball in a cube

SummaryI created a useless object, but nice to have, it is imprinted in one go, the ball cannot come out of the cube. No need for support the piece is printed directlyPrint SettingsPrinter Brand: Creality Printer: Ender-3 v2 Rafts: No Supports: No Resolution: 0.2 mm Infill: 10 %Filament:Sunlu PLA Cherry red