Hi... This is follow up my post about back cover for Lithophane lamp... I make Lithophane box for Lithophane size 150 mm x 100mm. This Lithophane powered by 9Volt battery or 12 Volt DC Adaptor. Check the stl below... This will fit with any 150 x 100 mm Lithophane generator. What you need : 1. 9Volt battery 2. 9Volt battery connector 3. Jack DC 4. Switch 5. Strip led Check my YouTube video https://youtu.be/0uWnFwXds6o