Bias pliers are specialized pliers used for cutting wire. They have sharp, beveled jaws and a fulcrum point close to the jaws for maximum mechanical advantage. They are useful for precise cutting in small spaces and creating clean cuts for soldering.
Bias pliers are a type of pliers used to cut thread. They are specially designed to perform a cutting, rather than a gripping or pulling activity. They consist of a pair of jaws, a fulcrum point and a pair of handles. Handles are often dipped in colored plastic, which provides a distinctive look to identify the tool as well as serving an insulating purpose.
The jaws are sharp and bevelled to cut wire tightly and effectively. The fulcrum point between the jaws and handles is positioned closest to the jaws to provide the maximum mechanical advantage to the technician using the tool. Diagonal pliers are known by a number of alternative names, including dams, diagonal side cutters, and side cutters.
Pliers are a class of tools with several uses, and diagonal pliers have a relatively narrow purpose. Other types of pliers are more appropriate for gripping and manipulating wire, as they have blunt or ridged surfaces that are not intended to cut. Tradesmen such as electricians will occasionally have an all-purpose pliers tool that incorporates the beveled edges of a pair of pliers along with a gripping surface found in other types of pliers. For their specific cutting task, however, the diagonal pliers are very well suited. The metal in the jaws of a pair of diagonal pliers is usually carbon steel or another alloy with sufficient hardness to penetrate the softer conductive metals, such as copper, used in electrical wiring.
Working with wire is a precise task, requiring the use of a tool with a compact cutting mechanism to accommodate small diameter wires, often a millimeter or less. Diagonal pliers, with their small, hard jaws, are an adequate tool for cutting jobs where a larger tool would prove cumbersome. The jaws of a pair of diagonal pliers can fit into small spaces where there are many different wires and accurately cut just one wire, while a larger tool might be difficult to maneuver. High leverage diagonal cutting pliers, those with longer handles, are useful in such small spaces because they can easily apply enough force to penetrate a wire core and cut the wire.
It is important that users cut the yarn cleanly, as a rough cut can create a fray. Soldering wires also requires a clean surface to establish a solid joint. Bias pliers are an invaluable tool for making clean cuts that allow for a proper solder interface that will not fray.
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