Create a dice
with boolean operations
Create a cube.
Use the Filleting tool. Press the + key, and hit Return.
Create a sphere, rotate it.
Your sphere must be at the right scale, and at the right place. Use the Proportional Scale and Move Tools.
Select the sphere, choose the Punch Tool, clik on the cube. Use the + and - keys to display successively the different combinations between the two intersected objects. Press
Return when wanted shape is shown.