Chapter 08: The Toolhead (EVA)¶
This printer uses the popular and highly versatile EVA Extruder toolhead. The EVA Extruder is a standardized design used across several RatRig printers, featuring direct-drive extrusion, powerful part cooling, and a modular design.
External Assembly Manual
The EVA Extruder is a complex project in itself. To keep documentation clear and organized, its assembly guide is maintained as a separate, dedicated manual by Paweł Kucmus.
You must now pause this guide and switch to the official EVA Extruder manual to build your toolhead. Assemble it completely, including the hotend, extruder, fans, and wiring.
Click here to go to the official Eva Extruder Assembly Manual
Once your EVA Extruder is fully assembled, return to this manual for the next chapter, where we will cover mounting all the electronics and completing the final wiring.