Below, you will find photos diagramming which screws belong to which parts of the machine. All screws shown are 2mm hex (the middle-size allen key that came in your accessory bag). The photos are of an Ultimaker 2Go. Do not remove any of the screws labeled "Frame Screws." All of your printer's motors and electronics can be accessed by removing the covers on the machine; the frame panels themselves never have to be removed.