# Printer Assemblies

This guide will cover a significant amount of technical knowledge and terms. The different assemblies of the Promega will be mentioned frequently in the sections below.

List of the core Promega Assemblies:

* **Extruder Assembly**: This heats up and prints the filament. It is also referred to as the extruder carriage. This uses the coreXY system in order to travel in the X and Y plane.
* **CoreXY Assembly**: A belt system that allows the extruder carriage to travel on a plane along the X and Y axes.
* **Z-platform**: A heated bed that is actuated up and down with belts along the Z-axis.
* **Electronics (not shown):** Located on the back of the printer. Includes the Duet Maestro, the "brains" of the Promega.

![Promega Assemblies](https://3381616767-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LH1ZPQUJrjMM5Ql5c--%2F-LH1Za_0zE3Gc48IOTMt%2F-LH1Zf0PJ6pzL2_V1ciO%2FvOPGfUn48DwPQItF-differentpromegaassemblies.jpg?generation=1531199026427958\&alt=media)

![The Duet Maestro Board](https://3381616767-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LH1ZPQUJrjMM5Ql5c--%2F-LH50v58bccizQG_K47j%2F-LH51pqx8aD6Uh_PadRQ%2Fduetboard.jpeg?alt=media\&token=16c8c9a7-b565-4ea1-b25f-dc17658df45c)