Plastic Extruder Replacement


Goals:

 Supplies:

  • 2mm hex key
  • 2.5mm hex key

Note: Take care not to misplace any parts you remove during this procedure, as you will need them during the reinstallation.

The procedure for replacing a plastic extruder depends on the model of the extruder currently installed in your printer. See the image below to determine which procedure applies to you, then follow the instructions in the corresponding subsection to replace your plastic extruder.

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Markforged products contain high voltage and other hazards. Do not remove any panels or protective guards without the appropriate technical training and experience necessary to minimize risks to yourself and others. If you do not feel comfortable accessing service areas of your Markforged product, please seek the proper assistance.

Remove the A1095 Extruder

  1. Completely unload all print materials. For more information, see Unload Plastic and Unload Fiber, if applicable.
  2. Cool the print head (Menu > Utilities > Manual Control > Temperature Control > Cool).
    Note: The print head will take about five to seven minutes to completely cool.
  3. Power off your printer and manually move the print head away from the extruders.
  4. Use a 2mm hex key to loosen the socket head cap screw from the fiber feed tube on the fiber extruder.
    Note: Do not unscrew it all the way. It should require no more than one full turn to loosen.



  5. After detaching the fiber feed tube from the fiber extruder, slide the fiber feed tube all the way through the channel at the bottom of the plastic extruder toward the back of the printer.
  6. Unscrew the thumbscrew that connects the plastic Bowden tube to the plastic extruder.



  7. Remove the plastic Bowden tube from the plastic extruder and let it hang freely.
  8. Press on the push-to-connect fitting on the back of the plastic extruder to remove the plastic feed tube. Let it hang freely.
  9. Using a 2.5mm hex key, fully remove the two screws that attach the plastic extruder bracket to the printer casing and set them aside.



  10. Unclip the white wire clip that connects wires between the plastic extruder and the printer. Remove the plastic extruder from the printer.
  11. Take care not to remove the supporting bracket.

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Replace the A1095 Extruder

  1. Place the new plastic extruder in the bracket on the printer chassis where the old extruder sat.
  2. Re-attach the wires between the extruder and the printer by reconnecting the white 4-wire connectors.
  3. Place the screws and lock washers from the old extruder into the holes on the bracket and tighten them using a 2.5mm hex key. 



  4. Slide the fiber feed tube through the channel at the bottom of the new plastic extruder, toward the front of the printer.
  5. Slide the metal insert from the fiber feed tube into the V-shaped groove on the right side of the fiber extruder and use a 2mm hex key to tighten the screw. 



  6. Reinstall the plastic Bowden tube to the front-facing side of the plastic extruder and tighten the thumbscrew.
  7. Reinstall the plastic feed tube to the rear of the plastic extruder.
  8. Power on the printer and reload materials. For more information, see Load Plastic and Load Fiber.

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Remove the A3648 Extruder

  1. Completely unload all print materials. For more information, see Unload Plastic and Unload Fiber, if applicable.
  2. Cool the print head (Menu > Utilities > Manual Control > Temperature Control > Cool).
    Note: The print head may take several minutes to completely cool.
  3. Power off your printer and manually move the print head away from the extruders.
  4. Use a 2mm hex key to loosen, but not remove, the socket head cap screw from the fiber feed tube to the fiber extruder.

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  5. Detach the fiber feed tube from the fiber extruder.

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  6. Pass the fiber feed tube through the channel at the bottom of the plastic extruder, toward the back of the printer.

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  7. Unscrew the thumbscrew that connects the plastic Bowden tube to the plastic extruder.

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  8. Press in on the push-to-connect fitting to remove the plastic feed tube from the plastic extruder.

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  9. Using the 2.5mm hex key, remove and set aside the two screws securing the extruder to the rail.

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  10. Unclip the cable from the wire-management clip on the front face of the extruder, then disconnect the 4-pin cable from the socket on the black inward face of the extruder.

    mceclip10.png

  11. Disconnect the 6-pin cable from its connector on the front face of the extruder. 

    mceclip9.png

  12. Remove the plastic extruder and set it aside.

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Replace the A3648 Extruder

  1. Connect the 6-pin cable to its corresponding connector on the front face of the new plastic extruder. 

    mceclip12.png

  2. Connect the 4-pin cable to the socket on the black inward face of the new extruder. Secure the cable using the wire-management clip on the front face of the extruder.

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  3. Install the extruder on the rail, pushing it back against the case until the mounting holes line up. Use the 2.5mm hex key to install the two screws, securing the extruder to the rail.
  4. Connect the plastic feed tube to the plastic extruder. 

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  5. Connect the plastic Bowden tube to the plastic extruder and tighten the thumbscrew.

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  6. Pass the fiber feed tube through the channel on the bottom of the new extruder.

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  7. Reinsert the fiber feed tube into the slot on the fiber extruder, then use the 2mm hex key to tighten the top right screw securing the fiber feed tube in place.

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  8. Carefully tuck all internal cables and connectors below the lid of the printer.
  9. Power on the printer.
  10. Reload print materials. For more information, see Load Plastic and Load Fiber.

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