This tool assists in determining the correct duration of ultraviolet light needed to properly harden emulsion on a mesh screen used in printing. It helps printmakers estimate optimal times based on variables such as light source intensity, emulsion type, mesh count, and distance of the light source from the screen. For example, based on experimentation, a specific emulsion might require 20 seconds of exposure at a measured light intensity to properly cure.
Precise timing is crucial for achieving detailed and durable stencils in screen printing. Underexposure results in a soft stencil that washes out easily, while overexposure creates a stencil that is difficult to remove and can lead to image imperfections. Historically, determining the right exposure time was a process of trial and error. This tool minimizes wasted materials and time by providing a reliable starting point for exposure tests, increasing efficiency and reducing costs associated with printmaking.
