This is my version of a light box made for holding 120mm x 90mm lithophanes. It was printed at .25 initial layer then .2 the remainder of the print. The frame was made to fit in one direction. You will see an alignment circle on the bottom where the frame and box come together. This will ensure it is orientated correctly.

I used the following for the lights… 

• Chanzon 12V 2A UL Listed 24W AC DC Switching Power Supply Adapter (Input 100-240V, Output 12 Volt 2 Amp 24 Watt 6Ft Cord) Wall Wart Transformer
• Aoyoho 12pcs Car Truck Rocker Round Toggle LED Switch On-Off Control, Blue, Green, Yellow, Red(12V 20A)
• Lsgoodcare 5.5 x 2.1 MM 10A DC Power Jack Socket Dc-099 30V Threaded Female Mount Connector Adapter with 3.94Ich 18Awg Cable Pack of 10
• 12v LED Strip
• Kinstecks 580PCS 2.8mm Automotive Connector Kit 2 3 4 6 9Pin Automotive Electrical Wire Connectors Kit
• (3) Female terminal connectors to connect to the rocker switch