an apparatus for performing operations on a surface of an electronic substrate comprises a frame , a dispenser , coupled to the frame , to dispense a material onto the electronic substrate , a stencil moveable on a gantry system having at least one aperture to receive the material as the material is dispensed on the substrate , a controller that controls dispensing of the material on the substrate , and a wiper to remove material from the stencil as the stencil is translated away from the electronic substrate by the gantry system .