This is an unframed and reduced size and quality version. Thingiverse does not allow the full 450MB binary stl upload.
The full sized, full resolution lithophane(framed and unframed) is available on my site for those that want it:
Created using Photoshop and then on to PhotoToMesh V7 to create the litho and some Meshmixer work on the model. This is much higher quality than you can get from the various free online tools.
Check out more on my site: https://www.gadunky.com/
Make sure to print vertically and use a brim to hold it in place.
Scaling this up or down will reduce quality as it was designed to be printed in its original size.