A tray for organizing and sorting standard sized (83x63 mm) cards, such as cards for trading card games like Magic: the Gathering. It has six slots which fits around 80 cards each without sleeves.

I printed mine standing on one of the sides to avoid layer lines that cards could get caught on. This requires supports and/or five cm of bridging. I added thin support in each of the slots to reduce the maximum bridging distance by half (see screenshot). Another option could be to print the entire model at a 20 degree angle to make the bottom sides flat, at the cost of significantly more printing time and material for bottom supports.