A palette knife is a versatile tool used primarily in painting and art. It features a flat, blunt blade that can be used for mixing colors, applying paint, or creating texture on a canvas. Unlike brushes, palette knives allow for more control and can produce a variety of effects, making them popular among artists. Palette knives come in various shapes and sizes, each designed for specific techniques. They are often made of flexible metal or plastic, which helps in achieving smooth strokes or sharp lines. Many artists use palette knives alongside traditional tools like paintbrushes to enhance their creative expression.