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Chapter Hand Tools 2 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Objectives Identify the various types.

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Presentation on theme: "Chapter Hand Tools 2 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Objectives Identify the various types."— Presentation transcript:

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2 Chapter Hand Tools 2

3 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Objectives Identify the various types of hand tools. Describe the advantages and disadvantages of each type of hand tool. Select the proper hand tool for the job. Demonstrate skills in using various hand tools. Demonstrate how to use hand tools safely. Maintain, repair, or replace damaged tools. Demonstrate good craftsmanship in the performance of daily tasks.

4 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Tools for Technicians Acquire quality tools Care for them properly Skillfully use them Always use the correct tool for the job

5 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Wrenches Most widely used type of hand tool Used to hold or turn nuts, bolts, cap screws, and other fasteners Applying too much torque can strip threads or break off bolt heads Always use wrenches safely Know when to repair or replace

6 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Types of Wrenches Open-End –Open jaw on each end Box-End –Closed on both ends

7 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Types of Wrenches (Cont.) Combination –Has one open-end and one box-end Refrigeration Service –Designed to turn refrigeration service valve stems –Can have ratcheting feature Ritchie Engineering – YELLOW JACKET Products Division

8 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Types of Wrenches (Cont.) Flare-Nut –Box wrench with an opening in the box –Use to turn flare nuts Adjustable –Has a movable lower jaw –Turn so force is on the fixed jaw

9 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Types of Wrenches (Cont.) Allen –Also known as a hex key –Hardened steel shaft with a hexagonal shape –Available in different styles

10 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Socket Wrenches Individual, cylinder- shaped box-end attachments used with a handle Handles often have ratcheting feature Socket openings may be 4, 6, 8, or 12-point

11 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Pliers Used to grip, cut, crimp, hold, or bend various materials Choose the correct type of pliers for the job Always use pliers safely Know when to repair or replace

12 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Types of Pliers Lineman’s –Have a strong side- cutting feature –Useful electrical tool Long-Nose –Allow technicians to reach into tight places –Available in a variety of nose designs

13 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Types of Pliers (Cont.) Diagonal Cutting –Designed for cutting electrical wires, cotter pins, nails, and other fasteners Pump –Used for gripping round, square, flat, and hexagonal objects –Size opening adjustable through tongue and grooves

14 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Types of Pliers (Cont.) Slip-Joint –Designed for gripping, turning, and bending –Two jaw opening sizes Adjustable –Different types available

15 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Types of Pliers (Cont.) Locking –Use a compound leverage system to lock the jaws for holding various shapes and sizes of work

16 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Screwdrivers Used to drive or withdraw threaded fasteners Available in wide variety of shapes and sizes Reversible screwdrivers have a different tip at each end of the shank Interchangeable bit screwdrivers Screw-holding screwdrivers

17 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Nut Drivers 6-point socket head Useful for removing and replacing small hex head screws and nuts Available in a range of sizes

18 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Hammers Used for various striking operations Use the correct hammer for the job and use it properly Always use hammers safely Know when to repair or replace

19 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Types of Hammers Nail –Curved claw and straight claw –Different sizes for light and heavy work Ball Pein –Designed for use when riveting, shaping, and straightening metal –Also used when striking chisels and punches

20 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Types of Hammers (Cont.) Soft-Faced –Used where steel hammers would mar or damage the workpiece Engineer’s –Designed for heavy- duty striking –Also called “sledge hammer”

21 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Types of Hammers (Cont.) Setting –Have square corners and straight sides –Designed for sheet metal work Klein Tools, Inc.

22 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Hacksaws Used to cut all types of metal objects Blades are selected according to the number of teeth per inch At least two teeth should contact the metal being cut Can use one or two hands on the saw to make cuts

23 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Twist Drill Bits Used to cut small- diameter holes in metal or wood Made up of shank, body, and point Available individually and in sets

24 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Wood Bits Designed to drill into wood, plastic laminate, plaster, foam insulation, and similar materials Common wood bits: –Spade-type –Auger-type

25 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Other Types of Drill Bits Hole Saws –Designed for cutting holes –Used on steel, aluminum, copper, brass, sheet metal, stainless steel, wood, or plastics Masonry –Used for drilling brick, stone, concrete, and ceramic materials –Star drills designed for hand-drilling holes

26 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Snips Used to cut sheet metal, screens, gaskets, and straps Four basic types –Straight-pattern, combination, duckbill, and aviation Other types –Curved blade, bulldog, double-cut, and jeweler’s Always use snips safely

27 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Straight Snips Used for making straight-line cuts Available in different sizes

28 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Combination and Duckbill Snips Used for cutting curves in either direction May be used for straight-line cutting

29 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Aviation Snips Uses compound lever for less effort to cut than other types of snips Made of alloy steel Cutting blades are serrated Available in straight, left-hand, and right- hand patterns

30 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Punches Used to mark parts before disassembly Used to make an indentation in metal before drilling Common types of punches –Center –Prick –Pin

31 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Cold Chisels Used to cut off damaged or badly rusted nuts, bolts, rivet heads, or other fasteners Do not use dull chisels or those with a mushroomed head Edge can be sharpened with hand file or whetstone

32 Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website. Repair or Replace Do not use worn out or broken tools Damaged tools will not do the job properly They can put the users and others at risk Repair or replace worn tools as required Replacing a tool is a small cost compared to the cost of an injury or time wasted by poor performance


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