What is the primary function of a burnisher in printmaking?

The primary function of a burnisher in printmaking is to smooth the surface of a metal intaglio plate. This process is crucial for enhancing the quality of the print by refining the surface area from which the ink will be transferred to the paper. When a burnisher is used, it polishes the plate's surface, removing any rough spots or imperfections while also compressing the metal. This results in a smoother texture that allows for cleaner lines and more precise details in the final print.

While other tools and techniques in printmaking serve different roles, a burnisher's specific task is focused on preparation and finishing of the intaglio plate itself, ensuring that the print will have the desired clarity and quality. This attention to the plate's surface directly impacts the overall aesthetic of the print, showcasing the importance of the burnishing process within the broader printmaking workflow.