a method for printing a conductive trace on a plastic panel comprising : locating a nozzle proximate to a surface of a panel ; moving the nozzle relative to the surface of the panel ; sensing the surface of the panel relative to the height of the nozzle off of the panel ; determining the speed at which the nozzle is being moved across the surface of the panel ; adjusting at least one of the height of the nozzle relative to the surface of the panel and a flow rate of conductive ink out of the nozzle ; and dispensing a conductive ink from the nozzle onto the surface of the panel to form the conductive trace . the conductive trace is formed with a predetermined width .