Litho-Box 1 or 4

A lithophane-Box for lithophanes 67 x 100 x 4 mm. 2nd Box (quad-litho-box) with same lamps but four lithophanes same dimensions.

For a base-lamp with 36 mm entry like this:

https://www.ideenmitherz.de/010776 (box feetless)

or

https://www.ideenmitherz.de/009510 (box with feets)

Print it frontside down with tree-support (easier to remove) .2mm-layer.
Quad Litho-Box can be printed without supports.

A image-to-stl-Converter you can find here:
https://www.thingiverse.com/thing:66115