RRI Hotend Assembly Guide

Published on in Series Hotend and Extruder Assembly


Step 1:Insert the PTFE socket into PEEK isolator

Insert the PTFE socket into PEEK isolator

The dark brown (bigger part) is PEEK isolator and white colour (smaller part) is PTFE socket. Insert the PTFE socket into PEEK isolator as show in the picture and tighten it using the grub screws.

Mounting hotend

Step 2: Seal the Thread using PTFE tape

Use PTFE thread seal tape (not in kit) and apply few turns then, screw the nozzle on the heat barrel as show in picture

Seal the Thread using PTFE tape

  • Warning: Don’t hold the barrel on thread, since it will damage the threads.

  • Note: PTFE thread seal is very important, else the molten filament may leak via smalls gaps

Step 3: Now screw the heater block

Now screw the heater block

Step 4: Seal the Thread using PTFE tape

Use PTFE thread seal tape (not in kit) and apply few turns as show in picture Seal the Thread using PTFE tape

  • Note: PTFE thread seal is very important, else the molten filament may leak via smalls gaps
Step 5: Screw in the PEEK

Now complete the hotend assembly by screwing in the PEEK.

Mounting hotend

Step 6: Solder and assemble the thermistor

Solder the thermistor and 2 pin flat wire connector. Use the heat shrink and PTFE tube for insulation as shown in picture

Mounting hotend

Step 7: heating cartridge assembly

Insert the heating cartridge into heater block and use the grub screw to hold it in place.

Mounting hotend

Step 8: thermistor assembly

Insert the thermistor in small hole and use the grub screw and tight gently

Mounting hotend

  • Warning: Over tightening may damage the thermistor.
Done: Finally assembled hotend should look like this.

Mounting hotend



This article is part of Hotend and Extruder Assembly series.

  1. RRI Hotend Assembly Guide [This Article]
  2. aSensar's V1 Direct Drive Extruder Assembly Guide
  3. aSensar's V2 Direct Drive Extruder Assembly Guide
  4. aSensar's v3 Direct Drive Extruder Assembly Guide
  5. JHead Improved Hotend Assembly Guide
  6. How To Assemble SolidCube Extruder

TAGS: hotend

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