spiral tangent to a sphere
thingiverse
Check out this incredible design - a spiral that perfectly fits on the curved surface of a globe! To see how it's created, head over to whitehydra.com and take a look at their Openscad code.
Download Model from thingiverse
With this file you will be able to print spiral tangent to a sphere with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on spiral tangent to a sphere.