Engine heads case

This is a carrying case for the different heads for my F2D FORA engines.

I made a few different versions of it that can hold 4, 6, 8, 10 or 12 pcs.

The case is designed to prints the two parts interlocked (as one piece). The clearance is 0.3mm, make sure your printer can do that before printing, or the case will not be usable.

Additionaly you need 8 neodymium magnets - 5mm diameter and 3mm thick
(The hole in the part has 5.2mm diameter and 3.1mm depth).

I added the step files, feel free to download them and add you own name or change the design.