Pronunciation: [mˈandɹə͡lz] (IPA) 
Mandrels (/ˈmændrəlz/) are tools used to shape materials such as metal or wood. The spelling may seem odd at first, but it follows the pattern of adding -s to the end of a word ending in -el, such as "tunnel" becoming "tunnels." The "e" in "mandrel" is pronounced like the "e" in "men," and the stress is on the first syllable.
Mandrels, in a dictionary definition, refer to cylindrical tools or devices utilized for holding and supporting workpieces during various machining or shaping operations. They are commonly used in manufacturing and metalworking industries to securely hold a workpiece in place while it is being turned, drilled, or ground to achieve the desired shape.
Typically made of hardened steel or other durable materials, mandrels consist of a central axis or shaft with a flanged or tapered end, which helps to secure and center the workpiece. They often have a threaded or slotted design on the outer surface to allow for easy attachment or removal from a machine or tool such as a lathe or milling machine.
The primary function of mandrels is to provide stability and precision during machining processes, ensuring accurate and consistent results. They help reduce vibrations and minimize the risk of workpiece movement or misalignment, enabling machinists to achieve tight tolerances and maintain the desired dimensions of the finished product.
Mandrels come in various sizes and shapes to accommodate different workpieces and machining operations. They can be straight, stepped, or tapered, depending on the specific requirements of the task at hand. Some mandrels also feature multiple diameters, allowing for versatility in holding various-sized workpieces.
Overall, mandrels play a crucial role in the manufacturing industry, providing necessary support and alignment during machining operations, ultimately contributing to the production of high-quality and precisely engineered components.
The word "mandrels" originates from the late Middle English term "mandoil", which came from the Old French word "mandrin" or "mandrel". This Old French term ultimately derived from the Latin word "monile", meaning "necklace" or "collar". In its earliest usage, "mandrels" referred to a cylindrical tool or spindle used in various manufacturing processes, particularly in woodworking and metalworking. Over time, the word expanded its meaning to include different types of tools and devices used for shaping, holding, or supporting various materials during fabrication processes.
