Mechanisms — hand tools

Recent Blogs

Locking Pliers diagram
Locking Pliers Mechanism: How the Over-Centre Toggle Lock Works, Parts, Uses & Clamp Force Formula
Locking pliers clamp with 1,000+ lbs of jaw force using an over-centre toggle. Learn the geometry, sizing math, and shop applications used by mechanics and...
Pipe Wrench (stillson) diagram
Pipe Wrench (stillson) Mechanism Explained: Cam-Action Grip, Parts, Diagram & Torque Formula
How a Stillson pipe wrench works — the floating-jaw cam action, bite angle math, and real plumbing and pipefitting applications with sizing guidance.
Tongue-and-groove Pliers diagram
Tongue-and-groove Pliers Mechanism Explained: Jaw Geometry, Lever Ratio, and Clamping Force
Tongue-and-groove pliers explained — how the slip-joint channel works, jaw geometry, grip force calculations, and real plumbing and HVAC use cases.
Toggle Bolt diagram
Toggle Bolt Mechanism Explained: How Spring Wings Anchor Drywall, Parts, Diagram, and Load Formula
Toggle bolts anchor heavy loads into hollow drywall, plaster, and panel ceilings. Learn how the spring-wing mechanism works, sizing rules, and trade installer tips.
Slip-joint Pliers diagram
Slip-joint Pliers Mechanism Explained: How the Slot-and-Pin Pivot, Lever Ratio, and Jaw Geometry Work
How Slip-joint Pliers work, the pivot geometry behind the two jaw positions, and how plumbers, electricians, and mechanics use them on real jobs.
Multiple Bladed Sheep Shears diagram
Multiple Bladed Sheep Shears Mechanism: How It Works, Parts, Diagram and Throughput Formula
Multiple bladed sheep shears explained — how the comb and cutter geometry works, blade pitch, real shearing applications, and a worked stroke-rate example.
Machine Sheep Shears diagram
Machine Sheep Shears Mechanism: How Comb-and-Cutter Handpieces Work, Parts and Uses Explained
Machine sheep shears explained — cutter geometry, comb tooth pitch, drive RPM, and shed-floor sizing for shearing crews running Heiniger or Lister handpieces.
Horse Clipper diagram
Horse Clipper Mechanism: How Eccentric Drive Oscillates the Blade, Key Parts, Uses, and Formula
How a Horse Clipper works — blade kinematics, stroke rate, and motor selection for equine grooming, livestock prep, and veterinary clipping operations.
Fiddle Drill diagram
Fiddle Drill Mechanism: How It Works, Parts, Formula, and Uses in Watchmaking and Jewellery
Fiddle drill explained — how the bow-string spindle drill works, why jewellers and watchmakers still use it, plus a worked speed example and selection guide.
Drill (general) diagram
Drill (general) Mechanism Explained: How It Works, Parts, RPM Formula and Uses
How a drill works in metalworking, woodworking and construction — chuck mechanics, bit geometry, RPM and feed rate, plus a worked example for steel.
Cramp Drill (form 2) diagram
Cramp Drill (form 2) Mechanism Explained: How the Screw-Feed Hand Drill Works, Parts and Uses
Cramp Drill form 2 explained — how the screw-clamped breast drill bores accurate holes in steel, brass and hardwood for toolmakers, fitters and instrument builders.
Cramp Drill (form 1) diagram
Cramp Drill (form 1) Mechanism Explained: How the Screw-Feed Hand Drill Works, Parts & Uses
Cramp Drill (Form 1) explained — how the screw-feed hand drill works, where it's still used in shipwright and joinery work, plus a worked feed-rate...
Bolt Cutters diagram
Bolt Cutters Mechanism Explained: Compound Leverage, Diagram, Animation, Calculator and FAQ
Bolt Cutters use compound leverage to multiply hand force up to 20× — cutting hardened steel padlocks, rebar, chain, and bolts cleanly in one squeeze.
Vise Grip Pliers diagram
Vise Grip Pliers Mechanism Explained: How the Over-Centre Toggle Locks, Parts and Uses
Vise Grip Pliers explained — the over-centre toggle that locks jaws onto rounded bolts, broken studs, and weld fixtures with up to 1 ton of...