Pronunciation: [mˈandɹə͡l] (IPA) 
The word "mandril" is commonly misspelled as "mandrill." The correct spelling follows the rule of using "i" before "l" after a consonant. The IPA phonetic transcription of the word is /ˈman.drɪl/, with a short "a" sound for the first syllable and a short "i" sound for the second syllable. The word refers to a tool used for holding and turning a workpiece in a lathe, and a misspelling can cause confusion in technical settings.
A mandril, also spelled mandrel, is a cylindrical tool or rod used in various industrial, mechanical, and machining processes. It typically features a tapered or stepped shape, with one end larger in diameter than the other. This design allows mandrils to securely hold objects, such as workpieces or components, in place during drilling, turning, or other manufacturing operations.
Mandrels are commonly used in metalworking, woodworking, and even jewelry making. They can be made from a variety of materials, depending on the specific application. For instance, in metalworking, mandrils are often made from hardened steel to withstand the high pressures and forces involved in machining operations. In woodworking, they may be made from softer materials like wood or plastic to prevent damaging the workpiece.
Mandrels are versatile tools that can be used for a range of purposes, such as shaping, forming, and aligning materials. They are commonly employed in processes like lathing, grinding, and polishing, where precision and stability are essential. By securely holding the workpiece, a mandril enables the operator to achieve accurate and consistent results.
Overall, a mandril acts as a reliable support tool that facilitates machining or other operations by securely holding objects in place, allowing for more precise and efficient manufacturing processes.
The word "mandril" has a diverse etymology, depending on its context. Here are the various origins for each:
1. Mandril (Tool): The term "mandril" refers to a cylindrical device used to hold or center a workpiece during machining operations. Etymologically, this usage of "mandril" is derived from the Old French word "mendre" or "mandaire", which meant "to command" or "to order". Over time, "mendre" evolved into "mandre" and then "mandrin" in Middle French, which eventually became "mandril" in English.
2. Mandrill (Primate): "Mandrill" is the name of a colorful primate found in Africa. The word is derived from the Portuguese "mandril", which originated from the Kongo word "mánda" or "mbándá", meaning "monkey".
