Depending of what we want to print, we need supports for some parts of the object so that it is printable on a consumer 3D printer. We can’t just print on thin air. - Rules to Avoid Support Structures When 3D Printing

Trying to remove the support from a 3D printed object is often difficult, and at best, it leaves an ugly, scarred surface at the contact zone. In the worst case scenario, you break the supported part and have to end up resorting to glue.

The main goal of this article is to help you think about your object so it can be printed without supports