Lithophane frame
thingiverse
I've executed a design for a box to hold printed photos, three deep, with dimensions of 50mm width and 38mm height. The photo was taken at http://3dp.rocks/lithophane/.
Download Model from thingiverse
With this file you will be able to print Lithophane frame with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Lithophane frame.