Christmas Lithophanes Make Neat Decorations
J'adore ! Plein d'idée ! Faut que je test !

Lithophanes are neat little artistic creations that use variations in the thickness of a material to reveal an image when lit from behind. 3D printing is a great way to make lithophanes, and they can make for beautiful Christmas decorations, too!
via Hackaday : lire l’article source