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  1. Needle-nose pliers
    • Needle-nose pliers

    • 2.5mm Allen key

  2. LCD-cover
    • LCD-cover

    • LCD-knob

    • LCD-support

    • LCD-cable-clip

  3. Prepare the LCD controller and LCD-support printed parts as shown in the picture. Ensure the correct orientation of parts and the LCD controller.
    • Prepare the LCD controller and LCD-support printed parts as shown in the picture.

    • Ensure the correct orientation of parts and the LCD controller.

    • Slide the LCD-support parts on the LCD-controller.

    • The exact position will be adjusted in the next step, no need to worry at this moment.

    • You can now remove the protective foil from the LCD panel.

    • Cables to LCD are factory installed, but you can disconnect them.

  4. Adjust the LCD-support parts as shown in the picture.
    • Adjust the LCD-support parts as shown in the picture.

    • LCD-support parts must face directly into the cutouts in the LCD-cover.

  5. Press the LCD controller with the LCD-support into the LCD-cover as shown in the picture. Press it as deep as possible.
    • Press the LCD controller with the LCD-support into the LCD-cover as shown in the picture.

    • Press it as deep as possible.

    • The LCD controller must click under support in the center of the LCD-cover.

  6. M3x10 screws (2 pcs) Using the 2.5mm allen key, secure the LCD controller in place. Using the 2.5mm allen key, secure the LCD controller in place.
    • M3x10 screws (2 pcs)

    • Using the 2.5mm allen key, secure the LCD controller in place.

  7. Assemble the LCD-knob part as shown in the picture. Assemble the LCD-knob part as shown in the picture.
    • Assemble the LCD-knob part as shown in the picture.

  8. Plug in the cables as shown in the picture. Cable with 1 stripe has to be plugged in the connector labeled with EXP1.
    • Plug in the cables as shown in the picture.

    • Cable with 1 stripe has to be plugged in the connector labeled with EXP1.

    • Cable with 2 stripes has to be plugged in the connector labeled with EXP2.

  9. Press the LCD assembly onto the front side of the Y-axis. Best way is to press the LCD assembly on the top threaded rod first and then on the bottom.
    • Press the LCD assembly onto the front side of the Y-axis.

    • Best way is to press the LCD assembly on the top threaded rod first and then on the bottom.

    • Guide the LCD cables in between threaded rods as in the picture.

  10. Use the zipties to anchor the LCD assembly to the threaded rods. Use the zipties to anchor the LCD assembly to the threaded rods. Use the zipties to anchor the LCD assembly to the threaded rods.
    • Use the zipties to anchor the LCD assembly to the threaded rods.

  11. Guide the LCD cables using LCD-clips as seen in the picture. Reverse direction of each of the clip, to prevent side movement of the cables.
    • Guide the LCD cables using LCD-clips as seen in the picture.

    • Reverse direction of each of the clip, to prevent side movement of the cables.

  12. Congratulations! You've attached the LCD to the Prusa i3 3D printer!
    • Congratulations! You've attached the LCD to the Prusa i3 3D printer!

    • You can continue by assembling the PSU and the heatbed in the next chapter - 7. PSU & Heatbed assembly.

Finish Line

538 other people completed this guide.

Josef Prusa

Member since: 01/05/2015

142 Guides authored

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Prusa Research Member of Prusa Research

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19 Comments

The walls of the LCD cover are very thin, watch out not to break it when assembling it (step 5 and 9)

Robert S. - Reply

Hi Robert, thanks for the feedback. We've designed all parts of the printer to be strong enough to sustain the assembly.

Jakub Dolezal -

20 mins. Hardest part is getting the 2 10mm screws that hold the LCD into place. These should be pointed self tapping, it wold be far easier to get them to start.

Randy H - Reply

20 Min... agree with Randy H on self tapping screws.

James Miller - Reply

30 minutes assembly here; just had to solve the challenge of 'wobbly' printer; I had forgotten the felts in the Y-axis assembly. All stable now!

Codrin Kruijne - Reply

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