This is a simple box I made to carry cotton swabs while traveling. The lid is attached and will print in place if supported.
4 Top / Bottoms
Walls are modeled for an extrusion width of 0.5mm.
The hinge clearance is 0.4mm. Let me know if that doesn't work for you.
Sliced in Simplify3D (though others should work).
Carefully remove supports then wiggle the hinge free.