The file 'Plane Color Lithophane 3D Printer Model' is (3mf,stl) file type, size is 3.8MB.
https://wiki.bambulab.com/en/knowledge-sharing/CMYK-color-lithophane-printing-instructions%20https://us.store.bambulab.com/products/pla-cmyk-lithophanehttps://lithophanemaker.com/