Abstract: A system for pin-point injection or application of a viscous, hot-melt conformal coating which is injected or applied onto a surface of an article and is readily removable from the surface to provide a temporary mask to selected areas of the article. The system includes a material supply unit which can accept the coating in at least one of granular, flake, chunk or block form and can heat the coating to transform the coating into a substantially viscous form for pumping out of the unit by a pump member. A heatable hose is also included having first and second opposite ends, the first end being connected for operable communication with the pump member and the hose including a heating element controlled by the supply unit and positioned along the length of the hose for maintaining a desired temperature within an interior of the hose.