What technique did Chuck Close use to paint?

Chuck Close used a technique known as "grid painting," where he would create a grid over a reference photograph and then replicate that grid onto a canvas. This method allowed him to break down complex images into smaller, manageable sections, ensuring accuracy and detail. Close often employed a combination of airbrushing and traditional brushwork, focusing on color and texture to create his large-scale portraits. His approach emphasized the process of painting as much as the final image itself.