About this 3D model
Made this for a friend who photographs with Crystal balls using them as a lense. This can be sized up for larger balls. Note: This prints great sliced in CURA with "Make overhangs Printable" checked on to avoid using supports. Otherwise, depending on your printer, you may need to enable support to have the top ledge overhang without issue - keep the fan cooling 100% up there if you do.