Like many I have a Bambu Lab printer and have purchased some of their LED backlight boards. I ran into a problem when trying to fit their Light Plate (to defuse the LED lights) into their Frame. It was too tight and could not get it to fully be seated. (https://wiki.bambulab.com/en/knowledge-sharing/CMYK-color-lithophane-printing-instructions%20)
I created a new Light Plate with the dimensions of 147mm x 109mm x 1.4mm and it is much easier to fit into the Frame with no trimming required.
The author marked this model as their own original creation.