- Glue stick
- 2.5mm hex key
About the Fiber Nozzle Calibration Test Print
The Fiber Nozzle Calibration Test Print routine is designed to tell you if your fiber nozzle is set too high or too low. An incorrectly set fiber nozzle can cause stringing or groove marks in the finish of your part, among other issues.
This “staircase” test print is used by the utility to measure the height difference between the two nozzles. During the course of the print, the fiber nozzle is dragged over a series of “steps” at a constant height, leaving marks on the steps that it hits.
The steps on the part are numbered to help show how accurately calibrated the fiber nozzle is. The steps increase in height from left to right, meaning that “Step -2” is the lowest and “Step 2” is the highest. A correctly calibrated fiber nozzle would first hit the part in the “Step 0” box. Because the fiber nozzle is dragged across the part at a constant height, if the nozzle hits “Step 0”, it will also hit the taller steps to the right of it. Look for the lowest step that the fiber nozzle hits.
During this print, the fiber nozzle drags across the part three times and pauses between each drag to let you see where the nozzle hit and adjust the fiber nozzle height.
Run the Fiber Nozzle Calibration Test Print
- Ensure that the print bed is level. For more information, see Level the Print Bed.
- Clean your print bed and apply glue as shown in the picture below. Install the print bed.
- Select the menu icon from the dashboard.
- Select Bed Level.
- Select Adjust Fiber Nozzle Height.
- Select Print Staircase.
- When the print finishes, press the Next button on your printer's touchscreen.
- Once the fiber nozzle has finished heating, press Next to test the height of the nozzle relative to the staircase print.
- Examine the part without removing it from the print bed, and identify the leftmost box that has a drag mark from the fiber nozzle running over the part.
Note: Marks are more difficult to see on Nylon White; look carefully for the nozzle mark before lowering the nozzle and rerunning the test print.
- If the mark begins in the "Step 0" box, your nozzle is correctly calibrated.
- If the mark begins in a negative numbered box, your nozzle is too low.
- If the mark begins in a positive numbered box, your nozzle is too high.
Note: Rotating the adjustment screw 18 degrees clockwise will lower the fiber nozzle by one step height in the test print; rotating the hex key in a counterclockwise direction will raise the fiber nozzle up, away from the bed.