I was wondering if anyone on the forum has ever built a lightbox? First off, I believe I have the right name for it, if I am wrong would someone please correct me. I am looking to make something similar to a color negative being enlarged with light bulbs behind it. I think movie posters at theaters are done this way. I was wondering if anyone knows how and where I could get something like that developed and how to go about building a box around it once I have it printed. Thanks!