A usual deck of cards comes in a pretty ugly plastic case that will break quickly if any force is applied. To address this problem I designed this simple box and made it out of a block of beech wood. In the lack of a plainer, I used beech plywood for the lid.
To carve out that kind of material I used a 6 mm router end mill. With a reasonable step down of 3 mm and a feed rate of 2400 mm/min this step is rather quickly done. The other cuts were made using a 4 mm single flute end mill with basically the same settings.
A little mineral oil intensifies the wood color and protects the box against moisture.
I haven't tried to print the stl-files but would be glad to get feedback if they work.
Visit https://www.zenziwerken.de/en/ for more interesting designs.