I purchased a set of cobalt drill bits from banggood, but they came without any case, so I made one.

Note: The case is adjusted to the length of drill bits in my set, you can use attached OpenSCAD file to adjust case/cover to fit your particular set of drill bits.

After printing I used drill bits to fix holes in the base. I painted labels using 0.4mm and 0.2mm fineliners.

Print Settings

No rafts, no supports needed. I printed it with 0.2mm layer with 10% infill.