NOTE 1: Review design before using! 12/31/2014 - As of today, I have not built this yet since I just completed the initial design yesterday. Because of this I have not had the opportunity to verify the design. Feedback is welcome Note 2: The scad file has multiple attributes defined that you can change to quickly alter the design. 1. num_slots: This specifies the number of card slots which is currently set to 3. 2. stack_height: Sets the height of the tray effectively changing how many cards it will hold. 3. card_length and card_width: Sets dimensions of card. By changing these two values you could easily update tray to accommodate other card styles The card holder is designed to hold mini American board game cards in sleeves which would have the dimensions 1 5/8" x 2 1/2" (41x63 MM). Each slot should measure 43.5x65.7 mm giving slightly extra room around the cards.