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E3D Hermes is a compact, dual-drive HotEnd extrusion system that enables users to take flexible printing to the next level. It features a highly constrained filament path, fully hardened stainless steel drive train, and a heatsink which has been designed to optimise airflow and prevent warping.


E3D Hermes is a dual-drive system with a hardened stainless steel drive train. Individually CNC cutting each hobb allows for a round-bottomed root, with a tooth that curves upwards to a robust, sharp tip. The round bottom of the profile strongly resists filament debris wedging into the drive gear and in almost all cases it’s self-cleaning as any debris simply falls off the teeth.

Compact, Integrated System

We set out to develop a compact extruder and HotEnd system with a reduced part-count. Hermes is a system of components designed to work seamlessly together as a single product.

To achieve this, we have developed a custom motor, based on a NEMA 17 frame, with our own faceplate designs. This is neat as it allows us to use the motor itself as part of the assembly and to add our own features for the user’s convenience, such as the mounting T-Slots.

Unparalleled Flexible Printing

Hermes constrains your filament like no other HotEnd/extruder combination.  You won’t truly ‘get’ the impact of the optimised constraint that Hermes provides until you’ve printed flexibles with it. But trust us – the performance is second to none and also has a significant impact on printing normal materials such as PLA or PETG. 

Optimised Heatsink

Hermes’ heatsink design ensures airflow is diverted up and away from both the HotEnd and the heated bed, reducing the risk of warping and uneven stresses forming in the printed part. 

*Please note* – whilst the custom motor is similar to a Nema 17, it isn’t a standard Nema 17. Therefore, E3D Hermes it is not compatible with other Nema 17 motors and you’ll not be able to swap the motor with either a compact but powerful/ slimline motor or other 3rd party motors.

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