Art Project Frame 12x16

This is a large 12x16 frame I made for a particular art project that will be sandwiched between plexiglass and lit up with RGB LED lighting. I've posted a picture of the finished piece. Unfortunately; I had to downsize the picture a lot. This art piece is called Filter Sweeps - Resonator Foil. It can be found here https://twoselvesgallery.com/collections/mike-milota

I used the Tinkercad codeblocks from the Drink Coaster Edge-lit Display to make the frame. The frame edge thickness is about 1.25 inches and the depth I needed on the inside of the frame was 14mm. This piece has thicker layers of plexi on the back and front and a thin layer of plexi between each layer of the art piece. Total thickness was 14mm.

I couldn't make the frame the actual size I needed so I took the Tinkercad model and stretched it out using another 3D modeling program to the height and width so it would fit a 12x16 piece. I had to cut the frame so it would fit on the printer and I made joining pie