Mandrels are a cylindrical tool used in various industries for shaping, drilling, and polishing materials like wood, metal, and plastic. The term "mandrels" has a few synonyms, including arbors, spindles, and shafts. These terms refer to the cylindrical shape and function of the tool that is used to hold and rotate a material as it is being worked on. Some other related terms include collets, chucks, and adapters, which are used to secure or modify the mandrel. Overall, the use of a mandrel is critical in creating accurate and precise cuts and shapes, and having knowledge of its various synonyms is essential for anyone working in manufacturing or industrial settings.