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Calibration

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SoftFever edited this page Dec 31, 2022 · 23 revisions

Flow rate

flowrate Calibrating the flow rate involves a two-step process.
Steps

  1. Select the printer, filament, and process you would like to use for the test.

  2. Select Pass 1 in the Calibration menu

  3. A new project consisting of nine blocks will be created, each with a different flow rate modifier. Slice and print the project.

  4. Examine the blocks and determine which one has the smoothest top surface. flowrate-pass1_resize 0-5

  5. Update the flow ratio in the filament settings using the following equation: FlowRatio_old*(100 + modifier)/100. If your previous flow ratio was 0.98 and you selected the block with a flow rate modifier of +5, the new value should be calculated as follows: 0.98x(100+5)/100 = 1.029. ** Remember** to save the filament profile.

  6. Perform the Pass 2 calibration. This process is similar to Pass 1, but a new project with ten blocks will be generated. The flow rate modifiers for this project will range from -9 to 0.

  7. Repeat steps 4 and 5. In this case, if your previous flow ratio was 1.029 and you selected the block with a flow rate modifier of -6, the new value should be calculated as follows: 1.029x(100-6)/100 = 0.96726. ** Remember** to save the filament profile.
    pass2 -6 image

Pressure Advance

I will present two approaches for calibrating the pressure advance value. Both methods have their own advantages and disadvantages. It is important to note that each method has two versions: one for a direct drive extruder and one for a Bowden extruder. Make sure to select the appropriate version for your test.

Line method

The line method is quick and straightforward to test. However, its accuracy highly depends on your first layer quality. Make you turn on your bed mesh for this test. Steps:

  1. Select the printer, filament, and process you would like to use for the test.
  2. Print the project and check the result. You can select the value of the most even line and update your PA value in the filament settings.
  3. In this test, a PA value of 0.016 appears to be optimal. pa_line
Screenshot 2022-12-31 at 12 11 10 PM

line_0 016 image

Tower method

The tower method may take a bit more time to complete, but it does not rely on the quality of the first layer. The PA value for this test will be increased by 0.002 for every 1 mm increase in height.
Steps:

  1. Select the printer, filament, and process you would like to use for the test.
  2. Examine each corner of the print and mark the height that yields the best overall result.
  3. I selected a height of 8 mm for this case, so the pressure advance value should be calculated as 0.002x8 = 0.016. tower

tower_measure

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