Keyhole saws, also known as compass saws, are an essential tool for woodworking. The spelling of the word "keyhole saws" can be broken down using IPA phonetic transcription as /ˈkiːhoʊl sɔːz/. The first syllable, "key," is pronounced with a long e sound, followed by "hole" pronounced with a long o sound. The final part of the word, "saws," is pronounced with a soft, unvoiced s and a long o sound. This tool's name comes from the shape of the blade, resembling that of a keyhole.
Keyhole saws are handheld cutting tools that are designed for making curved or small, intricate cuts in various materials, such as wood, plastic, or drywall. They are named for their distinctive keyhole-shaped blade that allows for cutting in tight and hard-to-reach places. These saws typically consist of a long, narrow blade with sharp teeth and a handle or grip for ease of use.
The blade of a keyhole saw is usually made of hardened steel for durability and precision cutting. It is characterized by its narrow width, allowing for more control and flexibility when maneuvering around corners or contours. The teeth on the blade are typically arranged in a crosscut pattern, enabling them to cut efficiently in both forward and backward motions.
Keyhole saws are commonly used by carpenters, woodworkers, and contractors for tasks such as cutting holes for electrical outlets, installing door locks, shaping wood pieces, or trimming drywall. The small size and maneuverability of these saws make them ideal for detailed or delicate work, as well as for cutting in areas where larger saws cannot easily reach.
In summary, keyhole saws are versatile hand saws with a distinctive keyhole-shaped blade. They are designed for making curved, intricate cuts in various materials and are often used in woodworking, carpentry, and drywall installation. These saws offer precision and control, especially in tight or hard-to-reach spaces.
The word "keyhole saw" is composed of two parts: "keyhole" and "saw".
1. Keyhole: The term "keyhole" refers to the shape of a small, narrow opening found in certain locks. This particular shape is reminiscent of an old-fashioned keyhole, which has a round opening at the top and a narrower, elongated slot below. The name "keyhole" was given to these locks because they required a specific key shape to unlock them.
2. Saw: The word "saw" originated from Old English "sagu" or "sawu", which referred to a cutting tool with a toothed blade used for cutting through materials like wood or metal. The term itself can be traced back to the Proto-Germanic word "*sagō", meaning "saw".