This is a pretty simple light box that is intended for use with interchangeable lithopane plates. It made the perfect Mother's Day gift for my wife. It could double as a night light or even an accent piece for a corner/end table.
See Post-Printing Notes below for specific assembly details.
3D Solutech PLA
Black Carbon Fiber
Update (8/6/19): Based on feedback from several users, you may have to scale the part if you load the .stl files directly into your slicing software (e.g. Cura). The box was designed in inches, but the slicing software may interpret the units as millimeters. If the part appears tiny when it is loaded into your slicing software (4.5 mm x 4.5 mm) scale it to 2540%. The actual part should be 114.3 mm x 114.3 mm.
1) The light box is designed to work with square (103 mm x 103 mm) lithopanes. The lithopanes should be 3.0 mm thick (maximum). Follow this tutorial as a guide to develop the plates (lithopanes). It is important to the assembly of this design that the final dimensions of the plate are 103mm x 103mm x 3mm (max). This can be verified in the Cura build window prior to generating the .gcode.
2) The box and base are designed to hold this socket or this socket with a slight interference fit. The metal clips or plastic base must be removed prior to assembly. It should slide with moderate hand pressure. The holes in the base and the body may need to be sanded slightly to achieve this. I recommend wrapping the cord once around the rib in the base adjacent the cord relief (see photos). This will reduce the effect of tugging/pulling on the cord to the connection at the socket.
3) The socket (E12 base) will require a C7 bulb commonly used in night lights. Although the bases identified above come with some, I'd recommend using an LED alternative in order to keep it from overheating. I haven't tried it with a conventional style bulb but I'd rather not worry about it. There are probably cheaper options than this at your local hardware store.
4) I lined the inside of the cover and the bottom of the base with aluminum foil (polished side up - see photos) to get the most out of the night light bulbs. I glued the foil in place with general purpose glue (e.g. Elmer's).