The lightbox has been finished! I designed the acrylic and manufactured it on our laser engraver/cutter. The end result was better than expected, although I had to condense (shorten) the acrylic overall to meet the max acrylic dimensions of 70 square cm. After the transparent acrylic was finished, I screwed it into the lightbox and “force fit” everything together as designed. Luckily my tolerances and dimensions matched perfectly. The acrylic had to be custom designed to fit the screw holes and the box geometry.