The file '40mm To 60mm Fan Adapter 3D Printer Model' is (SLDPRT,STL) file type, size is 398.5KB.
What can i say?...
PS 1 You should print it with support for best results, look at the kissliser slising results image.
PS 2 Perhaps you'll have a successful print model "cone" without supports, rotate the model by 90 degrees. See "made" pictures.
40mm_to_60mm_fan_mount.SLDPRT | 394.5KB | |
40mm_to_60mm_fan_mount.STL | 119.4KB | |
40mm_to_60mm_fan_mount_cone.SLDPRT | 372.5KB | |
40mm_to_60mm_fan_mount_cone.STL | 192.2KB |