The Rights & Wrongs Of Using Pliers & Pincers

The Rights of Using Pliers & Pincers (Correct Practices)

1. Match Jaw Profile to Material Geometry

Always utilize pliers that correspond directly to the task shape. Use serrated combination jaws for flat metal plates, tapered long-nose jaws for intricate terminal wiring, and end-cutting pincers for pulling out fasteners.

2. Verify Insulation Ratings for Electrical Tasks

When working on live or potentially live circuits, use only certified pliers rated up to 1000V. Regular plastic coatings or dipped rubber grips on standard pliers do not provide guaranteed electrical insulation.

3. Maintain Pivot Point Integrity

Routine maintenance requires removing metal grit and debris from the joint. Apply a light lubricating oil directly to the rivet or pivot pin weekly to ensure smooth mechanical movement and prevent jaw misalignment.

The Wrongs of Using Pliers & Pincers (Prohibited Practices)

1. Striking with the Tool

Pliers and pincers are not impact tools. Hammering with the sides or jaws can fracture the hardened steel, distort the alignment rivet, and cause the tool to shatter under normal hand pressure later.

2. Cutting Hardened Fasteners or Steel Springs

Standard pliers and pincers are designed for soft to medium-hard metals (copper, aluminum, soft wire). Attempting to cut hardened concrete nails, high-tensile springs, or steel screws will immediately chip or dull the cutting edges, rendering the tool useless.

3. Using Handle Extensions (Cheater Bars)

Adding pipes or makeshift extensions to tool handles to increase leverage is highly dangerous. It overstresses the tool’s metallurgy beyond its structural limit, risking sudden handle or jaw breakage under high load.

4. Direct Heat Exposure

Never expose pliers or pincers to welding torches or open flames. High heat alters the chemical tempering of Chrome Vanadium (Cr-V) or high-carbon steel, permanently softening the jaw serrations and cutting edges.

Technical Definitions & Industrial Applications

What Are Pliers?

Pliers are hand-held pivot tools engineered primarily to grip, bend, twist, and shear materials by multiplying hand force through a localized pivot point. They utilize serrated, flat, or tapered jaws to secure a firm mechanical hold on fasteners, wires, and components.

• Combination Pliers: Built for general-purpose gripping and heavy-duty wire twisting/shearing.
• Long Nose (Needle Nose) Pliers: Built with elongated jaws for precision component handling and wire looping in confined spaces.
• Diagonal Cutting Pliers: Engineered exclusively for clean, flush-cutting of copper, aluminum, and soft steel wires.
• Locking Pliers: Features an adjustable toggle mechanism that locks the jaws onto a workpiece, functioning as a temporary vice.

What Are Pincers?

Pincers are specialized hand tools designed with a bulbous, rounded head and opposing cutting edges engineered primarily to extract fasteners via rolling leverage. The jaw geometry allows the tool to grip flush against a surface and pull embedded objects upward.

• Primary Functions: Pulling out embedded timber nails, extracting heavy stapling, cutting soft metal tacks, and tightening/cutting rebar binding wire in construction formwork.

FAQs

Related Readings:

• Types of Pliers and Their Uses
• Nose Pliers Types Uses and Maintenance Tips
• Choosing the Right Nose Pliers for Your Precision Work
• Difference Between Pincers and Pliers
• Cutting Pliers Complete Guide
• What Are Pliers Used For