Report as inappropriate

Cool design. I'd like to make a version of this big enough for a small switching power supply and ports for an AC socket / switch on back and an a mini DIN plug on the front. I haven't use any of the OpenSCAD tools before. How do I modify this to increase it's dimensions? The power supply is 5" x 4" x 1.5" and I need room for the incoming and outgoing jacks.