PYE Technical Centre
Knowledge Base & FAQs
Understand the engineering physics of hand tools, lever multiplication ratios, and general maintenance guidelines.
Tool Engineering: The Leverage Principle
Mechanical Leverage
Archimedes Law & Pliers Design
The entire mechanical efficiency of combination pliers and wire-cutters goes back to the Greek scholar Archimedes: "Effort times effort arm equals load times load arm".
In plier mechanics, two symmetric levers pivot around a central joint. The hand grip area represents the effort arm, while the gripping jaws or cutting edges act as the load arm.
By shifting the mechanical fulcrum (the joint) as close as possible to the cutting edge, PYE engineers minimized the load arm. This special joint geometry amplifies manual hand grip up to 39 times at the cutting interface.
Engineering Proof: With an ordinary manual hand force of 500 Newtons, a PYE high-leverage plier generates an incredible 19,500 Newtons of shear force at the jaw intersection—allowing effortless cutting of piano wires.