Workshop Safety Rules and Regulations

Length: 0 minutesComplexity: Standard

<h1><strong>WORKSHOP SAFETY RULES AND REGULATIONS</strong></h1> CONTENT <ol> <li>Safety Precautions or Attitudes in the Workshop</li> <li>General Safety Precautions in Workshops</li> <li>Accident Prevention Techniques</li> <li>Types of Fire</li> <li>Safety Precautions in Fire Accidents</li> </ol>   <h2><strong>Safety Precautions or Attitudes in the Workshop</strong></h2> The following are the safety precautions or attitudes in the workshop: 1. Obedience: Pupils must obey the instructions of their teachers at all times 2. Humility: Show respect to everybody and when you are in doubt about anything, ask question. 3. Fiddling: Never play with any tool, equipment and machine in the workshop, such as ‘’ON/OFF’’ switch. 4. Horseplay: Do not run around in the workshop. Always, be patient and never rush. 5. Negligence: Report any fault or injury to your teacher, no matter how small. <h2><strong>General Safety Precautions in Workshops</strong></h2>

Holding Devices; Cutting and Pairing Tools

Complexity: Standard

<h1>HOLDING DEVICES, CUTTING AND PAIRING TOOLS</h1> <p>CONTENT</p> <ol> <li>Holding Devices</li> <li>Cutting and Paring Tools</li> </ol> <p> </p> <h2>Holding Devices</h2> <p>Woodworking holding devices are the tools used to hold the work piece on the workbench. Woodworkers work on workbenches. It is on these benches that various woodwork constructions are carried out. The centre of the bench is usually lower than its two sides. This area is called a ‘well’ and its function is to accommodate the tools brought from the tool cupboard to the bench top during operations. The tools cannot fall or roll on to the floor or on anyone’s feet because this part is lower than other area of the bench.</p> <p>The fittings are:</p> <h3>1. Bench Vice</h3> <p>It is also called fitter’s vice. It is used to clamp or to hold jobs when the following operations are to be carried out on the bench, filling, bending, tapping, cutting, assembling parts, etc.</p> <p><img class="size-full wp-image-36664 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/bench-vice.jpg" alt="Holding Devices; Cutting and Pairing Tools - Bench vice" width="274" height="192" /></p> <p>Other types of vice are:</p> <h4>Hand Vice</h4> <p>It is used for holding work when performing operations such as drilling, riveting, etc.</p> <p><img class="size-full wp-image-36665 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/hand-vice.jpg" alt="Holding Devices; Cutting and Pairing Tools - Hand vice" width="229" height="192" /></p> <h4>Machine Vice</h4> <p>It is fixed to the table of any machine tool.</p> <h4>The Care of the Vice</h4> <ol> <li>Always keep the vice clean.</li> <li>The thread or the screw inside the vice should be oiled regularly.</li> <li>Do not use the vice as an anvil for hammering a job</li> <li>Always use hand force only to tighten the vice for holding the work piece.</li> </ol> <h3>2. Bench Stop</h3>

Properties of Metals

Complexity: Standard

<h1><strong>PROPERTIES OF METALS</strong></h1> CONTENT <ol> <li>The Definition of Metals</li> <li>Identification of Metals by Physical Properties</li> <li>Classification of Metals</li> </ol>   <h2><strong>The Definition of Metals</strong></h2> A metal is a material (a compound, element or alloy) that is hard when in solid state, opaque, shiny, and which is a good conductor of heat and electricity. <h2><strong>Identification of Metals by Physical Properties</strong></h2> Identification of metals can be defined as a method used to differentiate one particular type of metal from another and from other materials which are non-metals. Metals can be identified through their properties, which include: <ol> <li>Density: This is the weight of a metal and it varies from metal to metal. E.g. aluminum is light and lead is heavy in weight.</li> <li>Colour/Lustre: This is the appearance of a metal when the surface is polished. For example, when polished and examined under a microscope, copper presents a different appearance from polished mild steel.</li> <li>Fusibility: This is the property of a metal which makes it melt and join with other metals while in a liquid form.</li>

Properties of Materials: Properties of Wood

Length: 0 minutesComplexity: Standard

Unfortunately we could not locate the table you're looking for.<h1>PROPERTIES OF MATERIALS - WOOD</h1> <p>CONTENT</p> <ol> <li>Definition of Materials</li> <li>The Definition of Wood</li> <li>Identification of Wood</li> <li>Classification and Properties of Wood</li> <li>Differences in the Properties of Hardwood and Softwood</li> <li>Properties of Materials and Identification of Wood, Timber, Structure of Wood</li> <li>The Growth of Timber and Wood Structure</li> <li>Five Main Parts Cross Section, Classes and Properties</li> </ol> <p> </p> <h2>Definition of Materials</h2> <p>Materials are substances from which other things can be made. Basically, they can be classified into two: metallic and non-metallic. Furthermore, the metallic ones can be subdivided into ferrous and non-ferrous metals, while the non-metallic ones can be divided into natural and synthetic materials.</p> <p><img class="size-full wp-image-19706 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/properties-of-materials.jpg" alt="Properties of materials" width="600" height="175" /></p> <p> </p> <h2>The Definition of Wood</h2> <p>One of the materials that is supplied by nature is wood. Wood is commonly used in some engineering manufacture because it is light, strong and can be worked upon easily.</p> <p>Wood is a material obtained from trees. It is made up of cellulose and lignin each consisting of 60% and 28% respectively.</p> <p> </p> <h2>Identification of Wood</h2> <p>Generally, wood has very good combination of colours to give it high decorative value. This makes it possible to identify some woods by their colour. Examples are:</p> <p></p>

Marking Out Tools, Measuring Tools and Gauge

Complexity: Standard

<h1>MARKING OUT TOOLS, MEASURING TOOLS, AND GAUGE</h1> <p>CONTENT</p> <ol> <li>Marking Out Tools</li> <li>Measuring Tools and Gauge</li> </ol> <p> </p> <h2>Marking Out Tools</h2> <p>These are hand tools used for marking out the required shapes of a particular metal from the sheet metal before cutting in the metal workshop. Examples are:</p> <h3>(i) Surface plate</h3> <p>This is used for checking the alignment and flatness of the object.</p> <h3>(ii) Surface table</h3> <p>This is used for marking out large objects, for checking accuracy, for height alignment and checking parallelism.</p> <p><img class="size-full wp-image-36693 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/surface-plate-surface-table.jpg" alt="Marking Out Tools, Measuring Tools Driving Tools and Cutting Tools - Surface plate - Surface table" width="498" height="179" /></p> <h3>(iii) Scriber</h3> <p>This is used for marking out straight lines on metals in conjunction with other marking out tools.</p> <h3>(iv) Centre punch</h3> <p>This is used to locate the centre of a hole to be drilled.</p> <p><img class="size-full wp-image-36694 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/scriber-and-centre-punch.jpg" alt="Marking Out Tools, Measuring Tools Driving Tools and Cutting Tools - Surface plate - Scriber - Centre punch" width="410" height="195" /></p> <h3>(v) Dot punch</h3>

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