Question 1: Describe the purpose of finishing processes in product design. Why are they important for the final product?

Answer: Finishing processes improve the appearance, surface quality, and durability of a product. They enhance aesthetic appeal, prevent damage, and can provide protection against environmental factors.

Question 2: List three common finishing techniques used in the manufacturing of consumer products. Briefly explain the purpose of each.

Answer: 1. Polishing – creates a smooth, shiny surface. 2. Lacquering/Coating – provides a protective layer and enhances appearance. 3. Sanding – removes rough edges and prepares surfaces for finishing.

Question 3: Imagine you are designing a wooden chair that needs a smooth, attractive finish. Which finishing process would you choose and why?

Answer: I would choose sanding followed by varnishing. Sanding smooths the surface, and varnishing adds a glossy finish and protects the wood from moisture.

Question 4: Sketch a simple plan for a finishing process you would use on a metal product to improve its surface quality. Label the main steps involved.

Answer: A correct sketch would include a sequence of steps such as cleaning, sanding or grinding, polishing, and applying a protective coating. Labels should clearly indicate each step.

Question 5: Explain the difference between buffing and polishing. When might each be used?

Answer: Polishing involves using abrasives to smooth surfaces and create shine, while buffing uses a rotating cloth wheel to produce a high-gloss finish. Polishing is used for rough surfaces, buffing for final high shine.

Question 6: A designer wants to give a plastic product a glossy and durable surface. Which finishing technique would you recommend and why?

Answer: I would recommend applying a clear lacquer or a spray gloss finish because it provides a shiny, protective surface that is resistant to scratches and environmental damage.

Question 7: Sketch a cross-section of a product that has been finished with a clear protective coating. In your drawing, show the base material and the coating layer, and label each.

Answer: A correct sketch would show a layered cross-section with the main material at the core and a thin, smooth outer layer labeled as the protective coating.

Question 8: What safety precautions should be taken when applying finishing processes such as spray painting or varnishing?

Answer: Work in a well-ventilated area, wear protective masks and gloves, avoid open flames, and follow manufacturer instructions to prevent inhalation of fumes and fire hazards.

Question 9: Identify and describe two environmental considerations related to finishing processes.

Answer: Disposal of chemical waste from paints and coatings must be managed carefully to prevent pollution. Additionally, choosing environmentally friendly finishes reduces harmful emissions and waste.

Question 10: Design a simple finishing plan for a new wooden product, including at least three steps. Sketch a rough timeline and note the key activities at each stage.

Answer: A suitable plan might include: 1. Sanding (initial smoothing), 2. Applying a stain or paint (color/appearance), 3. Sealing with varnish or lacquer (protection and shine). The timeline should indicate the order and drying times.