I created a Lithophane base for the Capstone LED lights I picked up for cheap at my local Sam's Club.

FOR BASE:

1.Download model 2a. For the settings listed below, Slice and print! :) 2b. Download f3d file, Modify in Fusion 360, export as STL (or 3d print), Slice, and print!

FOR LITHOPHANE:

1. go to https://lithophanemaker.com/Lithophane%20Sphere.html#processing
2. Upload a photo you would like to use on the lithophane
3. Choose your settings
4. Set "Cylinder Outer Diameter(mm)" to 75mm
5. Set "Cylinder Height (mm)" to 15mm (this is the value I used. You can go larger if you would like. You should be able to go down to ~13mm, but I have not tested anything less than 15)
6. Set "Cylinder Ledge Outer Diameter (mm)" to 80mm
7. Download your STL and slice in your preferred slicer :)

LED Lights https://www.amazon.com/Capstone-Surface-Mounted-Multi-Color-Control/dp/B07Z7BTPTJ

I am uploading the STL and the fusion files for easy modification.