A palette knife is a versatile tool used primarily in painting and art. It features a flat, flexible blade that allows artists to mix colors, apply paint, and create texture on the canvas. Unlike a brush, a palette knife can produce sharp lines and distinct shapes, making it ideal for both detailed work and broader strokes. In addition to painting, palette knives are also used in other artistic mediums, such as sculpture and printmaking. They come in various shapes and sizes, allowing artists to choose the right knife for their specific technique or desired effect.