Busininess card box
by pintokitkat, published
A small box, barely larger than the 85x55mm cards it holds, with a sliding, locking lid.
To use, hold it in your left hand, fingers underneath, thumb on top and with the tab to the right and on top. Use your left thumb nail to lift the tab to disengage the lock and push the bottom drawer out with your left fingers supporting it with your right fingers.
To close, push it closed using your thumb nail under the tab to guide the drawer shut.
I printed it in ABS at 0.22mm height and two skins. That seemed to work ok.