3. Step by step bed levelling (first time calibration)

By : ElectronicGeek.ca

After you assembled your printer, the next step is to level the bed. Here is the step by step procedure.

Step 1: Level the 2 Z-axis

  1. Turn off the printer
  2. Mesure the length between the X-carriage and the Z-motor holder
    DSC_4987                                       DSC_4988
  3. Turn manually one of the two Z-axis rod to adjust the height of the Z-axis. The height should me the same for both (within 1mm)
    DSC_4991

Step 2: Connect the printer to your computer via usb using Repetier Host

  1. Follow instructions on the SD card : how to slice_A3

Step 3: Prepare the bed

  1. Make sure the bed is well screw on 4 corners and that the nuts are not loose
    DSC_5012
  2. Verify that you have enough room on the screw to adjust each the levelling nut
    DSC_5013

Step 4: Adjust the Z-Axis end stop

  1. Screw the Z-Axis end stop screw until it’s in the middle of it’s length
    DSC_5017
  2. Using Repetier Host or the printer’s button, lower the Z axis until the nozzle touches the bed
    Move Z axis
  3. Adjust the z-axis end stop, so it’s “activated” when the nozzle is at this position
    DSC_4997

Step 5: Level the first corner

  1. Press “Home all” in Repetier Host home all
  2. Adjust the Z-Axis end stop screw and repeat this step until a sheet of paper can barely pass between the nozzle and the bed. You should feel a slight drag on the paper, but you should be able to move the paper.
    DSC_5017DSC_5003    You can also adjust the bed levelling screw for the fine tuning.
    DSC_5005

Step 6: Level the 3 others corners

  1. Press “Home all” in Repetier Host home all
  2. Press “Stop motor” in Repetier Host motor off
  3. With your hand, move the X and Y axis to position the nozzle on another corner
  4. Adjust the corner levelling nut so that the sheet of paper can barely pass between the nozzle and the bed.
    DSC_5005
  5. Repeat this step for the 2 remaining corner
  6. Once all corners are adjusted, repeat this step a second time.

Note : a regular sheet of paper is approximately 0.1mm thick. If during your first print is difficult get the first layer to stick to the bed, first try to apply spray net on the bed. If it still dosen’t work, you can decrease the distance between the nozzle and the bed by turning the Z-Axis end stop screw counter clockwise.

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