Swapping Hotends 

Atom 3.5’s hotend is easily swappable so you can print with different materials at different temperatures. While we always recommend using the default, PTFE-lined hotend for use with PLA and many other low-temperature materials, the included all- metal hotend allows you to print with materials which require temperatures hotter than what PTFE can handle. As always, please remember to use your printer in a well ventilated area. 



Removing and Replacing a Hotend 

1. Preheat the hotend and unload the filament.
2. Cool down the hotend, then turn off the machine.

3. Remove the Bowden tube from the effector by removing the plastic pneumatic connector clips and

   depressing the top of the connector while pulling the tube.

4. Disconnect the heater and thermistor connectors from the cable harness.

5. While holding the hotend, use a 1.5 mm hex wrench (included) to loosen the two headless hex

   screws on the side of the heat sink below the effector, and the hotend should be easily removable.

6. Replace the hotend in the same orientation and tighten the screws.

7. Reconnect the heater, thermistor, and Bowden tube, ensuring 12 that the tube is pushed all the

   way in.