🔍 Key Concepts

• Difference between roughing vs finishing operations in machining • Typical purpose of boring, reaming, broaching, and coring when working on holes • Which process is used to improve accuracy and surface finish of an already drilled hole

💭 Think About

• First, decide which process is normally done after drilling to improve the size and finish of a hole, rather than to create the initial hole • Think about which operation removes a small amount of material to correct size, versus those that remove a lot of material or create the original opening • Consider which of the listed processes is commonly associated with tight tolerances and very smooth walls in the hole

✅ Before You Answer

• Identify which option is specifically a finishing operation for holes, not primarily a roughing or shaping process • Check which process is typically used to bring a slightly undersized drilled hole up to exact dimension • Verify which operation is known for producing high dimensional accuracy and smooth surface finish in holes