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    Metalwork Hand Tools

    Uploaded by

    gogograceful
    basic technology year7 notes

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd

    Metalwork Hand Tools

    Uploaded by

    gogograceful
    16 views22 pages
    basic technology year7 notes

    Original Title

    METALWORK HAND TOOLS

    Copyright

    © © All Rights Reserved

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    basic technology year7 notes

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    16 views22 pages

    Metalwork Hand Tools

    Uploaded by

    gogograceful
    basic technology year7 notes

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    You are on page 1of 22

    METALWORK

    HAND TOOLS
    Metalwork
    SPECIFIC OBJECTIVES
    At the end of the lesson the students
    should be able to;
    a. Identify the different hand tools used
    for metalwork,
    b. Describe metalwork hand tools,
    c. Care and maintain metalwork hand
    tools.
    INTRODUCTION
    Metalwork hand tools can be
    categorised as marking out tools,
    measuring tools, driving tools and
    cutting tools.
    MARKING OUT TOOLS
    These are tools used to mark the work piece before
    carrying out other operations like cutting, drilling,
    etc. Examples of marking out tools are;
    1. Scriber: It is used to scratch lines on a work
    piece. It is made of steel.
    2. Surface plate: It is used as a surface for marking
    out and measuring work piece. It is made of
    malleable cast iron and it has a flat surface.
    3. Odd leg caliper: It is also called Jenny’s caliper. It
    is used to determine the centre of a round bar.
    4. Punch: It is used to mark the centre of a point or
    to mark the centre of a hole before drilling.
    SCRIBER
    SURFACE PLATE
    ODD LEG CALLIPER( JENNY’S
    CALLIPER)
    PUNCHES
    MEASURING TOOLS AND
    GAUGES
    These are tools used to measure distances or
    angles on a metal work piece before any
    operation is carried out. They are;
    1. Steel rules: These are steel metals graduated in
    metres, centimetres, inches, or millimetres used
    to measure the length on a metal work piece.
    2. Veneer calipers: These are used to measure
    objects by adjusting their moveable jaws to the
    object faces.
    3. Micrometer screw gauge: It is used to measure
    the thickness of very thin metal sheets and
    wires.
    4. Protractor: It is used to mark off angles on a
    metal work piece.
    STEEL RULE
    VERNIER CALLIPER
    PROTRACTOR
    MICROMETER SCREW
    GAUGE
    DRIVING TOOLS
    a. Spanners: These are tools used for
    loosening or tightening bolts and nuts.
    Examples of spanners are open
    spanner, box spanner, combination
    spanner, socket spanners
    b. Screwdrivers: These are used to drive
    screws into a metal
    c. Hammers: These are used to drive
    nails and screws into a metal sheet.
    SPANNER
    SCREWDRIVERS
    HAMMERS
    CUTTING TOOLS
    a. Files: These are hand tools with a rough
    surface used for the removal of metal
    materials or making them smooth.
    Examples of files are; hand files, flat files,
    half round files, round files, triangular files.
    b. Chisels: These are used for cutting metals.
    These are mainly classified as cold and hot
    chisels. Examples are flat, cross cut,
    diamond point and half round chisel.
    c. Saws: These are used to cut metals usually
    clamped on a vice. Examples of saws used
    for metalwork include hacksaw, piercing
    saw and back saw.
    FILES
    CHISEL
    HACK SAWS
    CARE AND MAINTENANCE
    S/N Metalwork hand Care
    tools
    1 Marking out tools Oil the threaded and moving
    parts and friction surfaces of
    calipers

    2 Measuring tools & Clean the surfaces of steel


    gauges rules and protractors after
    use with a clean cloth to
    remove any trace of
    moisture.

    3 Driving tools Wash off grease and dirt


    from spanners, brush off
    rust from spanners.

    4 Cutting tools: Keep chisels properly


    grounded and sharpened at
    all times, scrape off all rust
    deposits on their surfaces,

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