An acid-free etching process for those sensitive to dangerous chemicals. Made from steel-backed photosensitive polymer which is water-soluble. Exposure to UV light makes these areas waterproof. Developing the plate in warm water washes out unexposed areas to create an etching or relief plate. This process gives excellent ink receptivity. Develop quickly using a brush to remove the unexposed portion. Dry, then harden the plate in sunlight. (Data sheet available).