A rigid, flat surface specifically designed for use with water-based paints provides artists with a stable and absorbent platform. These surfaces are typically constructed from paper, often cotton, and are available in various thicknesses, textures, and sizes. A block, where sheets are glued along all four edges, offers a convenient, warp-resistant option.
Providing a receptive surface for watercolor application is crucial for controlling washes and achieving vibrant color. The absorbency of the material allows for subtle gradations and layering techniques. Historically, artists utilized a variety of surfaces, including wood panels and stretched fabrics. The development of purpose-made supports significantly enhanced the portability and practicality of watercolor painting, contributing to its widespread popularity.
