More Hand tools

Question 1

Flat Cold Chisels

• The flat cold chisel is the most
  common
• It has it’s cutting edge tapered to
  include 60 ̊ to 70 ̊overall

*soft metals - angle reduced
*hard metals - angle increased

Question 2

Taps - inside threads
Dies - outside threads

Question 3

Needle Nose Pliers

• Straight or bent nosed
• Useful for handling small parts and bending wire
• For tight locations

Question 4

Side Cutters (Diagonal Cutters)

• Cutting, gripping, bending small diameter wire
• Useful for removing cotter pins, cable staples, and nails

Question 5

Hints on using Wrenches

• snug fit
• Pull rather than push
• Nut fully seated
• Same plane as nut
• Tighten or loosen with a jerk
• Oil the bolt threads

Question 6

Socket Wrenches

• Allows access to recessed nuts or bolts
• Uses speed, ratchet, or torque handles
• Sockets used for air-operated tools should be 4 or 6 point sockets
• 4, 6, 8, or 12 point designs
• Never use regular sockets on an impact tool
  Speed Handle
  Ratchet Handle

Question 7

Prick Punch

• Used to make a small indentation at an intersection of
  two lines
• When satisfied that the location is correct then a
  center punch is used to make a deeper indentation
• The prick punch has a long slim taper and is useful for
  aligning holes
• Ground to a 30 ̊ included angle

Question 8

Center Punch

• Has a tapered bit with a broad, sharp point
• Used primarily for locating a starting indentation
  for drilling
• Point ground to a 90 ̊ included angle

Question 9

Flat Cold Chisels

• The flat cold chisel is the most
  common
• It has it’s cutting edge tapered to
  include 60 ̊ to 70 ̊overall
• For very soft metals, the angle
  should be reduced
• For very hard metals the angle
  should be increased

Question 10

Chisels

• High carbon steel stock machined and tempered
• Body and head are softer than the cutting edge to prevent chipping
• Soft head will mushroom after use and so must be occasionally ground to prevent
  pieces from flying off
• Do not hold with a tight grip as this can cause more injury if the hammer misses
• Wear safety glasses

Question 11

Soft Faced Hammer

• Used where a metal hammer will damage the work
• Plastic, brass, lead, rawhide, rubber, wood
• Dead blow is a hollow soft faced hammer with lead shot in the hollow
• If a soft faced hammer is not available the wood is sometimes placed between the work and the hammer blow
• Wood mallets should be made of the type of wood that is not easily split

Question 12

Claw Hammer

• Steel faced
• Used to drive and pull nails
• 16 oz. is a general use hammer
• Heavier for framing, lighter for finishing
• Curved claw – used for pulling nails
• Straight claw – used for ripping apart wood assemblies
• Never strike any thing harder than ordinary nails with a claw hammer as it may chip and cause an injury
• A checkered face may be provided to provide a gripping surface for nail heads