From The Ergoweb® Learning Center

Hand tools knowledgebase

Dan MacLeod, CPE, MA, MPH

Grip design

  • diameter
  • precision vs. power
  • length
  • friction surface
  • grip angle
  • pressure points
Grip1 OLYMPUS DIGITAL CAMERA

Weight and balance

  • pros and cons
  • center of gravity
Weight1 Weight2

Tool control

  • maintenance
  • sharpening
  • proper tool
  • employee training
Maint1

Power tool common Issues

Vibration

  • internal design
  • grip adapters
  • isolators
  • maintenance
OLYMPUS DIGITAL CAMERA Vibration2

Triggers

  • full hand strip
  • palm triggers
  • engagement triggers
Trigger1 Trigger2

Air hoses and connectors

  • reel location
  • lightweight hose
  • swivel connects
OLYMPUS DIGITAL CAMERA Hose2

Torque reaction

  • tool design
  • tool types
  • arms
  • bars
  • forearm brace
Torque1 Torque2

Temperature

  • Cold: air power tools

Useful adaptations

Counterbalances

  • suspension reels
  • support arms
  • portable tool cradles
  • point-of-use storage
  • common pitfalls
Cntrbalance1 OLYMPUS DIGITAL CAMERA

Mounts

  • motion-saving
  • heavy tools
  • squeeze tools
Mount1 Mount2

Second handles

  • hand tools
  • long-handled tools
SecondHandle1 SecondHandle2

Long handles and extenders

  • long handles
  • extenders
  • shafts
Extender2 Extender1

Straps and clips

  • traditional straps
  • modern straps
  • loops
  • rings
  • assistive devices
Strap1 Strap2

Forearm brace

  • spreaders
  • pushers
  • cutters
ForearmBrace1 ForearmBrace2

Labor saving mechanisms

Levers

  • new uses
  • compound levers
  • lever devices
  • mechanicaldisadvantage
Lever1 Lever2

Gearing

  • speed
  • strength
  • change direction of movement
Gear1 Gear2

Quick releases

  • lightweight (standard)
  • mid-sized
  • heavy duty
  • huge
QuickRelease1 QuickRelease2

Hinges

  • reduce time and exertion
  • easy removal
  • precise return
  • easy change in orientation
Hinge1 Hinge2

Power assists

  • Air cylinders
  • Hydraulic cylinders
  • Air springs
  • Manipulator arms
PowerAssist1PowerAssist

Ratchets

  • Mechanism
  • Reducing hand motions
Ratchet1 Ratchet2

Manual pumps

  • rotary
  • lever
  • piston
  • siphon
  • water cooler pumps
Pump1 Pump2

Vacuum cups

  • portable bases
  • grabbers

Foot pedals

  • manipulator
  • bench
  • standing
FootPedal1 FootPedal2

Comments on specific tools

Handheld fixtures

  • spring-loaded
  • clamping
  • vacuum pens
HandFixture1 HandFixture2

Screwdrivers

  • cordless electric
  • automatic
  • screwfeeders
Screwdriver1 Screwdriver2

Wrenches

  • hydraulic
  • torque multipliers
  • manual impact
Wrench1 Wrench2

Drills

  • Power feed
  • Drill presses
  • Gantry drills
Drill1 Drill2

Fluid dispensers

  • mixers
  • precision dispensers
  • applicator holders
Glue1 Glue2

Scissors

  • full hand loop
  • spring-loaded
  • powered
Scissors1 Scissors2

Reachers

  • grabbers
  • magnetic

 

Reacher

Wire strippers

  • powered
  • lever device
  • vise technique
Wirestrip1 Wirestrip2

Pliers and cutters

  • grips
  • mounts
  • multiple types
Pliers1 Pliers2

Scoops

  • lighter weight
  • grip over center
  • hoppers
Scoop1 Scoop2

Unique, special applications

  • grabbers
  • panel lifters
  • block lifters
  • manhole covers
Unique1
Sanders
Grinders
Air hammers