Yet another vertical lithophane`s printing support.
Add two such supports in your slicer and place them so they are in slight contact with back edges of your lithophane.
After slicing make shure again that there is contact and no obvious gap.
When the print is done use paper knife to delete supports, be careful on thin parts of the lithophane.
The height of the support is 100 mm. If needed, scale up/down only Z dimension.