Question 1: Describe the process of using a jigsaw to cut a curved shape in a piece of wood. Include safety precautions and key steps.

Answer: To use a jigsaw, first secure the wood firmly using clamps. Select the appropriate blade for the material. Wear safety goggles and ear protection. Mark the desired shape on the wood. Plug in the jigsaw and adjust the speed if possible. Guide the jigsaw along the marked line steadily, keeping the saw blade perpendicular to the surface. After completing the cut, switch off and unplug the tool. Safety precautions include wearing protective gear and ensuring the workpiece is stable.

Question 2: Explain how soldering can be used to join electrical components in a product. Mention the materials needed and the key steps.

Answer: Soldering involves melting a filler metal (solder) to join electrical components. Materials needed include a soldering iron, solder wire, and a stand. First, clean the surfaces of the components to be joined. Heat the soldering iron to the appropriate temperature. Place the tip of the iron on the component lead and pad, then feed solder into the joint until it flows and covers the connection. Remove the solder and then the iron, allowing the joint to cool. Proper ventilation and safety precautions, such as avoiding contact with hot parts, are important.

Question 3: Draw a simple plan for a product that uses a moulding technique to shape plastic parts. Include key features and annotations.

Answer: A correct sketch would show a mould with two halves, clearly labeled as 'top' and 'bottom'. The plan should include the mould cavity shape, a pouring inlet, and a vent. Annotations should describe the plastic injection process, noting how the plastic is heated and injected into the mould, then cooled and removed.

Question 4: Sketch a design for a handle that could be manufactured using a shaping or carving technique. Show its ergonomic features.

Answer: A correct sketch would depict a handle with a contoured grip, possibly with textured surfaces for better grip. The shape should follow ergonomic principles, such as a rounded profile that fits comfortably in the hand. Indicate areas where material might be carved or shaped for comfort.

Question 5: Identify three different methods of finishing a wooden product and briefly describe when each method is used.

Answer: Sanding is used to smooth the surface before finishing. Painting provides color and some protection, suitable for decorative items. Varnishing offers a protective, glossy finish, often used on furniture to enhance durability and appearance.

Question 6: Explain the purpose of using a template in the manufacturing of multiple identical parts. How does it improve efficiency?

Answer: A template guides the worker or machine to produce identical parts by providing a pattern or form to trace or follow. It ensures consistency in size, shape, and details, reducing errors and saving time, thus improving efficiency in mass production.

Question 7: Describe the key safety considerations when using power tools in a workshop.

Answer: Safety considerations include wearing appropriate protective equipment such as goggles and ear protection, ensuring tools are in good working order, keeping work areas clean and free of clutter, securing workpieces firmly, and following manufacturer instructions. Also, avoid loose clothing and keep hands away from moving parts.

Question 8: Plan a simple process flow for manufacturing a plastic box using moulding and finishing techniques. Include at least four steps.

Answer: Step 1: Design the plastic box and create a mould for shaping. Step 2: Heat plastic and inject it into the mould to form the box shape. Step 3: Allow the plastic to cool and solidify. Step 4: Remove the box from the mould, then sand edges and apply any finishing touches such as labeling or adding hinges.

Question 9: Sketch a cross-sectional view of a product that combines shaping and joining techniques, such as a glued wooden joint reinforced with a dowel. Show how the parts fit and are secured.

Answer: A correct sketch would show two wood pieces joined at a right angle with glue along the contact surface. A dowel passing through both pieces would be depicted, with annotations indicating glue application and dowel placement for reinforcement.