The switch bay is what enables lifting and lowering of the second print core. For successful dual-extrusion prints, it is important that the switching functions well. The lift switch is already calibrated when the Ultimaker 3 is shipped, but calibration can also be performed manually.
To perform switch bay calibration:
Go to System > Maintenance > Calibration > Calibrate lift switch.
- Move the lift switch on the side of the print head to point towards you
- Move the print head so that the lift switch fits in the switching bay
- Wait for the print head to go to the home position and test the lift switch
- Did the lift switch lower and raise the print core? If so, press “yes” to complete the calibration. If not, select “no” to perform the calibration again