This LED support backing ensures that, not only, LED strips and similar can be placed well and easily behind a lithophane, but also that the light applied by the LED strip is nicely and evenly distributed on the lithophane.
The drawings show an LED support backing measuring 15 x 20 centimetres.
If you want a different size, this can easily be adjusted in your slicer.
Advice:
I myself place this LED support backing in a photo frame with a depth of approximately 3 centimetres.
For good light distribution, it is important that the LED support backing does not become higher than a maximum of 50% of the frame in which you are going to place it when adjusting it
The author marked this model as their own original creation.