I wanted an eyeglass case that was unique, so I designed one. I decided to use Ø5mm x 3mm neodymium magnets for the latch and two M3 x 40mm long screws with nylon lock nuts for the hinges. I used a thin foam sheet glued inside the case for lining and cut it using a printed template to match the shape of the case.

Any combination of the two files can be used to make a case; the only difference is the design on the bottom.The file prints well with no supports ( I really would not use supports on the patterned area). I did a color change at Z = 1mm to make the pattern stand out, printed with the patterned side flat on the bed.

Prusa

i3 MK3

No

No

0.16

5-10%

Looks a bit better and hinges are stronger at a finer layer height. I did 4 perimeters for strength and plenty of top and bottom layers, so there really isn't any hatched infill on the part.