In this era of cheap turn-key machines, the idea of actually building your own desktop 3D printer might seem odd to some. But if you’re looking for a challenge, and want to end up with a prin… ...

Second, it turns out that $411 is actually kind of cheap for a DIY upside-down 3D printer, with Lemontron quoting the Positron v3.2 at $699 and the Journeymaker at $799.

Imagine you have a 3D printer that can do more than just print small models. The Infinity 3D printer is not only capable of self replicating itself but also by increasing its build volume.

We didn’t notice [Nikita]’s post about building a concrete 3D printer, a few months ago, but the idea seems sound: build a basic CNC XY axis and then add a mortar pump and hose to depos… ...