Once your Lemontron is assembled, you must do a one-time calibration! This is a very important step to ensure that your bed mesh has a good starting point. Yes, your bed will change when you’re out on the go, but the probe will make up for any small variations.

All good prints start with a level bed, meaning the bed is almost parallel to the rails. This is a one-time process, you should only need to do it again if it gets knocked out of alignment.

  1. Home the printer

    Click the home button.

  2. Move the tool head

    Move the tool head to X=105 and Y=5.

  3. Lower the bed

    Lower the bed to Z=0.

  4. Disengage the motors

    When the motors are energized, it's hard to move them by hand. Click the button to cut the power to the motors.

  5. Insert paper

    Insert a piece of paper on top of the nozzle.

  6. Twist the lead screw by hand

    Twist the lead screw so that the paper can move but just barely starting to resist dragging.

  7. Move the tool head

    Using your hand move the tool head to the front left corner.

  8. Adjust the screw

    Adjust the screw repeatedly testing with the paper until it just barely drags.

  9. Repeat on the other side

    Repeat the process on the front right corner. Now the bed is level! Remove the paper.

Z-offset calibration

With a levelled bed, you can calibrate the Z offset. This is known as the distance between the probe tip and the nozzle tip, and is needed to position the nozzle correctly. Many issues can be traced back to an incorrect Z offset!

  1. Home the bed again

    Click the home button. This will leave the nozzle in the center of the build plate.

  2. Place the paper again

    Place the paper between the nozzle and the bed.

  3. Set z-offset

    Use the Z offset buttons in the UI to finely adjust the bed up or down so that the paper just barely drags.

  4. Save

    Press the save icon. This will lock in your Z offset, which is the distance between the probe tip and nozzle tip.

Your Lemontron is now calibrated and ready to print. You should only need to come back and do it again if your Lemontron gets knocked around or you change the bed, nozzle, or probe.