When slicing a model for 3D printing, the part is divided into a stack of flat, 2D layers. But there’s an alternative in the form of non-planar slicing, where the layers can follow 3D curves.

There are times when I'm either too lazy to make my own designs or I just don't have the required technical know-how to create a 3D model for printing. That's how most beginners start. In such ...

[Ben] and [Lukas] were interested not just in whether a 3D printer could be used to get ... project’s rectangular spiral pattern into a 3D model, a quick proof-of-concept showed that three ...