Printing with bi-color filament results in an object ... Here is how it works: the 3D model for filament is a spiral that is the right diameter for filament, printed as a solid object.

Certain advanced technologies, such as 3D displays, biosensing, and security printing, can utilize circularly polarized ...

It lets you make 3D prints that slowly fade from one color to another along the Z-axis ... He started by creating a spiral model in Fusion 360, with a hexagonal cross-section and slowly tapering ...