The purpose of a vise grip is to hold pieces of metal and wood in place. These tools are used by carpenters, metal workers and construction workers. A vise grip may be used on plastic, but there is a chance it could damage the object. There are different vise grips designed for different jobs.
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The traditional-style vise grips are used in woodworking. These traditional grips are equipped with two flat surfaces that grip to hold the wood in place. To properly secure the wood, you must tighten your half-nut through the threads. Two pieces of well-sanded wood should be placed between the vise grip and the wood being cut. Well-sanded wood will prevent any damage from occurring to the precut wood.
The clamp-on vise is also used in woodworking. A clamp-on vise actually secures to the work bench itself, as well as to the piece of wood being cut. This vise uses a handle for tightening. After the workspace has been set, the handle is turned to secure the clamp to the bench.
The hold-down vise is the least difficult woodworking vise to operate. This vise secures your work in place by pressing against the table for support. The hold-down vise is also equipped with a soft pad under the clamp to prevent any damage to the wood being secured. The only drawback to this type of clamp is that is only works the wood from one side. If both sides require attention, the clamp must be released, and the wood must be turned over.
The swivel-base vise is a metal work vise. This vise is bolted to the bottom of a table or workbench. The top of the vise swivels, allowing the user to maneuver and bend the metal if needed. The key to this vise is that one section remains stationary while the top adjusts for angled work.