An wicking inhibitor for fluidic and microfluidic devices reduces wicking by providing a structure that interrupts the flow of a working fluid through a fluidic channel interface having corner angles greater than ninety degrees. Some embodiments disclose a refill unit including a container for holding a liquid. A deflection yoke for deflecting electron beams of a color CRT includes a horizontal deflection coil disposed on a saddle type mold die that has a funnel section and a neck section connected along a horizontal axis parallel to the centerline of the deflection yoke.