Replace the 3D Printer Nozzle

Tools: Socket wrench, heat-resistant gloves, spare nozzle.

Steps:

1. Heat the hotend to 220°C to loosen the nozzle threads.
2. Use a socket wrench to carefully unscrew the old nozzle.
3. Install the new nozzle while the hotend is still hot.
4. Tighten the nozzle against the heat block to ensure a proper seal.

Verification: Perform a test print to ensure the nozzle is seated correctly and extruding without leaks.