What tool should be used for gripping where greater pressure is needed?

The correct tool for gripping where greater pressure is needed is groove joint pliers. These pliers are specifically designed to provide a strong grip through an adjustable jaw mechanism, allowing the user to select the width of the grip depending on the size of the object being clamped. The design of groove joint pliers includes a distinctive pivot point and interlocking grooves that enable them to clamp onto the workpiece firmly, making them ideal for tasks requiring increased leverage and grip strength.

This capability is particularly beneficial when working with larger or more awkwardly shaped objects that need significant force to hold securely. The ability to adjust the jaw size adds versatility, allowing the user to grip various shapes and sizes effectively.

In contrast, other tools listed may not provide the same level of gripping strength or adjustability. A hinge handle can assist in applying force, but it lacks the specialized gripping ability of groove joint pliers. A hand screw clamp is designed for precise holding of materials but is typically used for lighter tasks that require stability rather than the application of significant force. The half hatchet, while a tool for chopping and splitting, does not function as a gripping tool at all. Therefore, groove joint pliers are distinctly suited for applications demanding a firm and adjustable grip.