Design/Technology Quiz - Resistant Materials 02 (Answers)
This KS3 Design and Technology quiz will challenge you on resistant materials. Metal is a resistant material. This D and T quiz focuses on the tools used when cutting and trimming resistant materials. The tool you choose will depend on the material you are working with - wood, metal or plastic - and whether you want to cut a straight line or a curve.
Usually, the first tool you will use when shaping your piece of resistant material will be a saw. There are several different types, each with their own specific use. A tenon saw will produce an accurate cut but in a straight line as it is not designed to flex. This saw would only be used on wood as its teeth are only designed to be used on wood. For metals and plastics, you would use a hacksaw, which is made from a different type of steel and has much smaller, finer teeth. For cutting curves, you would use a coping saw and for particularly fine cutting of patterns in wood, a fretsaw would be the best choice.
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There is a reinforcing band along the top of a tenon saw that keeps the blade from bending, enabling a more accurate straight line cut than with other types of saw
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Hacksaw blades are thin and need to be held tightly in place in the frame of the saw
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A small machine fretsaw will also cut curves in thin wood and metal
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These have sharp, toughened cutting jaws with longer arms than a pair of scissors. They are best for cutting small pieces of metal off a larger sheet
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Remember to use a wooden mallet to tap the chisel
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Files for detailed work are called needle files
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The file is moved always in the same direction
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The file is moved backwards and forwards
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A flatfile has sharp edges that would easily catch on the work piece
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A machine drill is used for making holes
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