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 is clean after use to prevent rusting and damage.
Use the appropriate blade for the material being cut, ensuring that it is sharp to avoid jagged cuts.
Step 3
Describe TWO safety aspects that one would check after mounting the work piece, before switching on B.
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Answer
Ensure that the work piece is securely fastened to prevent any movement during operation.
Check that the tool rest is locked in place to avoid any accidents.
Step 4
Describe ONE way in which a belt sander can be stored.
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Answer
Store the belt sander in a dry location where it is protected from dust or moisture.
Step 5
State TWO properties that are tested in both mechanical and visual grading.
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Answer
Strength
Density
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 timber surface.
Sand the timber until the surface is smooth and free from scratches.
Ensure that the timber is dry to allow for better absorption of preservatives.
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 trap door consists of a panel that can be pushed up, while a hinged trap door opens upwards/downwards by pivoting around its 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:
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Answer
King post: 114 mm x 38 mm
Brander: 38 mm x 38 mm or 38 mm x 50 mm
Step 10
Differentiate between hurricane clips and storm clips regarding the specific roof members that they secure.
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Answer
Hurricane clips are used for securing purlins to rafters or roof trusses, while storm clips are primarily used for securing roof tiles to the battens.
Step 11
Use ANSWER SHEET 4.9 and draw to scale 1 : 20 a close-coupled roof truss with a pitch of 30°.
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The drawing will reflect the specified dimensions and details as described, adhering to the scale requirement.
