1. Press 'Change Tool' in Axis Control.
2. Push the button. Keep turning the wheel counterclockwise. Remove the tool.
3. Hold the gliding disk between your fingers. Loosen the screw. Remove the gliding disk carefully.
4. Loosen the two screws halfway. Replace the knife carefully.
5. Push the knife until the end. Tighten the two screws.
6. there is also a knife with one flat side. Lay the flat side against the back.
7. Put back the gliding disk with the slot to the pin.
8. Tighten the screw.
8. Insert the tool back into the module. Push the button. Keep turning the wheel until the pin falls in the slot.
9. Keep turning the wheel until it's tightened.
10. Press 'Online' in Axis Control.