WASP ZEN Extruder calibration

The calibration of the ZEN extruder is based on the vernier principle, similar to that used in a common caliber. This process involves two overlapping grids with slightly different cell sizes, where each line represents one-tenth of a millimeter (0.1 mm). The position of the second extruder (T1) relative to the first (T0) will be determined by the coordinate in which the two grids precisely overlap.


  • Print the calibration file containing the overlapping grids.
  • Check which coordinate corresponds to a perfect alignment of the grids. For example, if the grids perfectly match the x=4 and y=3 coordinates (Figure 2), you will need to add 0.4 mm to the x coordinate and 0.3 mm to the y coordinate to get the correct calibration.
  • Record the found calibration values and add them (or subtract, if they are negative) to the existing values in your printer’s “Menu>Advanced>Motion>Extr Settings” menu.
  • After setting the new calibration values, relaunch the print file. You will notice that the coordinate will now correspond to x=0 and y=0 (figure 3), indicating a correct calibration.

Calibrating the ZEN extruder is an important step in ensuring that both printer extruders are aligned accurately. Follow these steps carefully and add the correct calibration values to get accurate print results.