Uploaded March 2026 | Updated September 2026, 3 weeks ago

---

In this video I show the complete process of replacing the hotend on the Anycubic Kobra S1, including all steps from removal and installation to the required configuration changes.

In this case, I also upgrade the nozzle from a standard 0.4mm brass nozzle to a 0.6mm hardened steel nozzle, and demonstrate what needs to be adjusted when changing nozzle size and material.

The guide covers both scenarios:
- replacing the hotend with the same nozzle size
- upgrading to a different nozzle size and material

In addition to the mechanical replacement, I show the necessary changes in the printer menu and in the slicer software to ensure correct print quality and reliable operation.

In this video:
- Step-by-step hotend replacement
- Installing the new hotend and nozzle
- Upgrading from 0.4mm brass to 0.6mm hardened steel
- Changing nozzle size in the printer settings
- Adjusting slicer settings for different nozzle sizes
- Material-related considerations and setup

Whether you're doing a simple replacement or upgrading your setup, this guide covers everything needed to get your printer running correctly.

Hot to convert to removable nozzle: youtu.be/SlK5n0KZSqM