What is a "rotary cutter"?

A rotary cutter is a handheld cutting tool used in sewing and quilting. It has a circular blade that rotates and is housed within a protective casing. The user holds the handle and moves the blade along the fabric, cutting smoothly and precisely through multiple layers of material. Rotary cutters are especially useful when cutting curves, angles, or intricate shapes, and are often used in conjunction with a cutting mat and ruler to ensure accuracy. They come in a variety of blade sizes and shapes and can be used with a range of materials including fabric, leather, paper, and vinyl. Rotary cutters are a popular choice for quilters and sewists who need to cut large amounts of fabric quickly and with precision.