Small box with integrated hinge and latch. Originally designed to be a box for fly fishing flies (after being lined with foam) but this was also an experiment in designing a hinge that would print as a single part with no supports, pins or extra hardware.

One side of the hinge is a half-sphere, the other side of the hinge is a slightly larger half-sphere cutout and the hinges are attached with a 45 degree brace - hence being able to print without supports.

Makes use of a rounded-corner box algorithm that I found on the web.

More information: https://danielupshaw.com/openscad-rounded-corners/

Update: I just added flipped versions of the .stl and .scad so that you don't have to flip it over to print it.