MARKING SCHEME
- Levels of qualifications.
- Artisan
- Craftsman
- Technician
- Characteristics of polyvinyl actate (PVA) glue.
- Easily applied.
- Sets at room temperature.
- Does not stain.
- Sets clearly and does not damage the edge of tools.
- Water resistant.
- Functions of the knob in a bench plane.
- The knob allows the user to control and direct the plane with both hands.
- It allows the user to hold and leverage the plane during use.
- Characteristics of polyvinyl actate (PVA) glue.
- Easily applied.
- Sets at room temperature.
- Does not stain.
- Sets clearly and does not damage the edge of tools.
- Water resistant.
(Any 4 x 1) = 4 marks
- Selection of finish;
- Appearance
- Protection
- Durability
- Ease of application
- Safety
- Reversibility
- hygiene
- Reasons that make a mortice gauge produce inaccurate marks.
- Loose spurs.
- Loose thumbscrew.
- If the stem is worn out.
- If the stock hole is not tightly fitting the stem.
- If accurate readings were not taken before locking the thumb screw.
- Favourable conditions for fungal growth.
- Moisture in wood - must be above 20%
- Temperature - between 30 - 37°C. Lower temperatures may reduce growth higher temperatures will kill fungi.
- Air - essential requirement for growth and respiration.
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- Parts of brush and function
- Part Function
P - handle - to hold brush.
Q - ferrule - connects handle to bristles.
plug - holds and spreads the bristles.
bristles - spread the paint
- Part Function
- Step of marking out the shape
- Establish line AB = 60 mm
- At point A and B construct perpendicular lines.
- At point A and B and along the perpendicular line, mark 80 nun - C and D
- At point A construct L30“ to cut at E.
- Measure 30 mm from point E to establish point F.
- At point F construct an arc 30 mm radius to meet at C and D.
- Join points A, C, D and E to produce the desired shape. 7 x 1 = (7 marks)
- Parts of brush and function
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