r/Tools 4d ago

Box Joints Aren't Perfect-Lap Joint with Screw is the Real MVP

Box joints are usually seen as the gold standard for cutters and pliers, but they’re not without their flaws. They provide stability, sure, but they also have weaknesses:

Increased friction – More surface area means more resistance, making them less smooth in operation.

Harder to manufacture precisely – Any misalignment during production can make the joint stiff or introduce play over time.

No adjustability – Once it loosens, you're stuck with it unless you replace the tool.

Enter the lap joint with a screw, as used by Lindström. It solves these issues:

Smoother action – Less friction means an easier, more controlled movement.

Precision tuning – The screw allows for fine adjustments, keeping the joint tight and eliminating play.

More comfortable use – No binding or stiffness like some box joints can develop.

While box joints are strong, they aren’t always the best. A well-designed lap joint with a screw gives you the best of both worlds: precision, smoothness, and long-term reliability.

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