@genialePrutser If you are driving the hangprinter using a 6XD, you may get away with just leaving the D anchor motor disconnected. The main dev of the hangprinter kinematics thinks this would work. If you are using a 6HC or Mini5+, you may need to hook up a dummy motor for the extra D anchor to avoid "phase disconnected" warnings/errors.
PS: If you set the motor current for the D drive to less than 500mA, you should not get any "phase disconnected" warnings even if you leave it disconnected.