An apparatus for screen printing a surface of a substrate includes a screen printing net, a print extremity element, and a supporting structure supporting the print extremity element. The supporting structure includes a slider coupled to the print extremity element and adapted to guide the movement of the print extremity element in a first direction, a support frame having a housing that is associated with a portion of the slider so as to allow movement of the slider relative to the support frame, and an actuation member coupled to the slider. The print extremity element urges a print material through the screen printing net onto the surface of the substrate. The actuation member positions the print extremity element relative to the screen printing net in the first direction, and includes magnets disposed within the housing of the support frame, and an electric coil disposed proximate to the magnets.