① 0.3mm feeler gauge
② Raise3D Premium PLA filaments (*2)
When do I need to recalibrate the nozzle height?
If you remove the entire interchangeable hotend from the original place, you don’t need to recalibrate the nozzle height after reinstalling it. However, if you exchange the left interchangeable hotend with the right one or if an interchangeable hotend is replaced with a new one, you need to recalibrate the nozzle height.
When you want to replace a single component on the extruder, you need to recalibrate the nozzle height after the replacement, such as replacing the heat sink, the nozzle, and the throat tube.
It is not necessary to recalibrate the nozzle height when replacing the cooling fan or the extruder controller board.
How to calibrate the nozzle height?
1. Make sure 2 spools of Raise3D Premium PLA filaments are loaded into your printer, and that the printer can extrude the filaments normally. Refer to the Pro3 Series-How to Load and Unload the filament-V1.0 in the Support Center.
Figure 1 Make sure that your printer can extrude the filament normally.
2. Select the "Settings" icon in the upper left corner to enter the settings interface.
Figure 2 Enter the settings interface.
3. Select "Maintenance" on the "Machine" tab.
Figure 3 Enter Maintenance.
4. Select "Offset Calibration".
Figure 4 Enter Offset Calibration.
5. Make sure that your printer has met all the requirements on the screen, and then select "Start".
Figure 5 Make sure that your printer has met all the requirements.
6. You will enter the 5-step Offset Calibration. You need to run Step 1 and Step 2. Step 1 is Left Z Probe Offset, and Step 2 is Right Z Probe Offset. These steps are aimed at calibrating the height of the left and right nozzle to the printing plate.
Figure 6 Run the Left Z Probe Offset and Right Z Probe Offset.
7. Follow the on-screen instructions to ensure that the nozzles and the build plate are clean, and then select "Next".
Figure 7 Make sure that the nozzles and the build plate are clean.
8. After the build plate stops moving, place a 0.3 mm feeler gauge between the left nozzle and the build plate. Align the rough point on the feeler gauge with the nozzle, and move the feeler gauge to test the height.
Note: Do not press the build plate forcibly when moving the feeler gauge. External pressure on the build plate may cause the test value to deviate.
Figure 8 Align the rough point on the feeler gauge with the nozzle to test the height.
9. If you can feel the resistance between the feeler gauge and the nozzle, then it is at the best height.
However, if you can’t feel the resistance, click the up or down button on the screen to adjust the height of the build plate. After the height is confirmed, click "Next".
1. The up arrow is to increase the distance between the build plate and the nozzle. The down arrow is to decrease the distance between the build plate and the nozzle.
2. When adjusting the height of the build plate, you should be able to remove the feeler gauge without hitting the nozzle.
If the feeler gauge does hit the nozzle, then it is a sign that the build plate is at the wrong height, which can result in wearing out a nozzle.
Figure 9 Adjust the height of the build plate.
10. The printer will automatically heat up and print multiple test lines. After the test line is printed, you need to compare the test line with the example on the screen. The printer will ask you to select the first line that is completely twisted/coiled.
Figure 10 The printer will automatically print multiple test lines.
11. For example, line 9 is a completely twisted/coiled line, select “9” and then select "Next" to enter the next step.
Note: If all lines are twisted/coiled at this time, or there is no twisted/coiled line, please click the button below to jump to the corresponding solution.
Figure 11 Select a completely twisted/coiled line.
12. At this point, the printer has automatically adjusted to the left nozzle's most suitable height, and informed you of the current value. In our example, the height of the left nozzle is now 2.57mm.
Figure 12 The printer has automatically adjusted to the left nozzle's most suitable height.
13. Next, you need to calibrate the height of the right nozzle referring to the above steps.
Figure 13 Calibrate the Right Z Probe Offset.
[ Pro3 Series – How to Calibrate the Nozzle Height – V1.0 ]