Square pen cup with horizontal slits at the bottom

A square pencil case was made. The dimensions of the box are 90x90x100mm. On the outer sides of this box, a regular pattern was made, consisting of horizontal slits extending around the circumference from the bottom of the glass. There are 5 of these slits along each side. All edges are rounded to protect the user from injury on sharp edges. The model was made in SolidWorks and exported as an STL file. This box is intended to be made on a Bambu Lab P1S 3D printer with a 0.4mm nozzle.