FIGURE 4.1 below shows two woodworking machines - NSC Civil Technology Woodworking - Question 4 - 2019 - Paper 1
Question 4
FIGURE 4.1 below shows two woodworking machines. Study the pictures and answer the questions that follow.
4.1.1 Identify A and B.
4.1.2 Describe TWO aspects that m... show full transcript
Worked Solution & Example Answer:FIGURE 4.1 below shows two woodworking machines - NSC Civil Technology Woodworking - Question 4 - 2019 - Paper 1
Step 1
Identify A and B.
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Answer
A is a Jigsaw and B is a Lathe.
Step 2
Describe TWO aspects that must be considered when taking care of machine A in terms of its blade.
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Answer
Ensure that the jigsaw blade after use is cleaned to remove any wood dust or debris that may affect performance.
It is essential to use the correct blade for the specific material to achieve a clean cut and avoid damage to both the material and the blade.
Step 3
Describe TWO safety aspects that one would check after mounting the work piece, before switching on B.
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Always ensure that the work piece is secured tightly to prevent any movement during operation.
Verify that the tool rest and all adjustments are properly set and the blade is sharp, thus ensuring a smooth operation.
Step 4
Describe ONE way in which a belt sander can be stored.
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Answer
A belt sander should be stored in a clean, dry area, away from dust or moisture to prevent damage to its electrical components.
Step 5
State TWO properties that are tested in both mechanical and visual grading.
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Answer
Strength: This refers to the material's ability to withstand applied loads without failure.
Density: This is the measurement of mass per unit volume, which can provide insights into the quality of the material.
Step 6
Describe the FIRST THREE steps that need to be considered when preparing timber before applying preservatives.
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Answer
Remove all dirt and debris from the surface of the timber to ensure smooth application of the preservative.
Sand the surface until it is smooth and free from scratches, which allows for better adherence of the preservative.
Allow the timber to dry completely to prevent trapping moisture under the preservative, which can lead to decay.
Step 7
Differentiate between a conventional trap door and a hinged trap door in a ceiling in terms of the way in which it opens.
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Answer
A conventional trapdoor typically consists of a panel that can be pushed up, while a hinged trap door opens by pivoting around one or two hinges.
Step 8
Name TWO parts of a conventional trapdoor.
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Answer
Panel
Cover strip
Step 9
Give the correct measurements for the following members of a roof: King post.
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Answer
King post: 114 mm x 38 mm
Step 10
Give the correct measurements for the following members of a roof: Brandering.
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Answer
Brandering: 38 mm x 38 mm / 38 mm x 50 mm
Step 11
Differentiate between hurricane clips and storm clips regarding the specific roof members that they will secure.
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Answer
Hurricane clips are used for securing purlins to rafters or roof trusses, whereas storm clips are primarily for securing roof tiles to the battens.
