Abstract: A handpiece apparatus and/or method for dispensing media, and that can include one or more lights for illumination and/or for curing of composite materials. The handpiece apparatus includes a heat source with a flow diverter to enhance heat transfer to the media, and a temperature controller that synchronizes the heat source with the fluid and/or gaseous flow. The handpiece apparatus has an accumulator chamber that temporarily removes transient flow that has not reached a predetermined temperature and then gradually recirculates it back into the media flow after the media reaches a predetermined temperature so that the media is dispensed at an elevated and uniform temperature. The handpiece apparatus can have one or more light sources for illumination and/or for curing composite materials. The handpiece apparatus dispensing nozzle acts as a light pipe to direct and focus illumination from an internal light source onto the work area.