Lithophane

This is an example of a lithophane where an image is rendered in 3D.
I used the poster from the musical "The Tina Turner Musical", but most any photograph will work. Contrast is important.

I used the open sourced Lithophane converter: https://lithophanemaker.com and then a flat frame option. There are many options, but i left it to their default settings.

I used gold silk PLA filament. I first had less than 100% fill and the fill pattern was visible, so then did it 100% to improve the contrast. No support is needed as long as you use a light coating of plate adhesive. I used 0.1mm in the slicer.