The only part that needs special way to print is the knob. Select change of filament in the next slice when the nut clearance ends. Deposit the nut inside the knob and resume your print. The example is shown in the next image.

For this model you need an M6 nut and M6x25mm hex head screw (10mm head).

For anti slip foots, use 3M Scotch rubber stops (12mm):