dt
đź“„ Papers, Cards & Boards
Q: What is the definition of a physical property and a working property?
A: A physical property refers to measurable characteristics (e.g., density, strength), while a working property refers to how a material behaves when being shaped or used (e.g., flexibility, foldability).
Q: What are key material properties and their definitions?
A: Includes strength, flexibility, rigidity, toughness, absorbency, etc.
Q: Why is modelling an important part of the design process?
A: It allows testing and visualization of ideas before full production, reducing errors and saving costs.
Q: How do you shape and form paper/cardboard and choose appropriate tools?
A: Use scissors, scalpels, scoring tools, and folding methods based on material thickness and design needs.
Q: What are the health & safety rules for equipment and in a DT room?
A: Wear protective gear, use tools properly, follow supervision, keep workspace clean, and store tools safely.
Q: Where do paper and board come from?
A: Mostly from wood pulp derived from trees, and sometimes from recycled paper.
Q: What are the types, properties, and uses of papers, cards, and boards?
A: Types: Cartridge paper, corrugated card, foam board, etc. Uses depend on weight, thickness, surface texture, etc.
Q: What are the advantages and disadvantages of various adhesives?
A: PVA (strong but slow), glue stick (easy but weak), hot glue (strong and fast but bulky), etc.
🧵 Textiles
Q: How do you set up a sewing machine and identify its key parts?
A: Thread the needle, wind the bobbin, adjust tension; key parts include presser foot, feed dog, bobbin case, etc.
Q: Where do textiles come from and what are their sources?
A: Natural (cotton, wool), synthetic (polyester, nylon), regenerated (viscose).
Q: What are the three main categories of textiles?
A: Woven, knitted, and bonded.
Q: What are the types, properties, and uses of textiles?
A: Cotton (breathable, used in clothes), polyester (durable, used in outdoor gear), felt (used in crafts), etc.
Q: How are fabrics constructed (woven, bonded, knitted)?
A: Woven (interlaced yarns), bonded (glued/fused fibers), knitted (looped yarns).
Q: Can you name examples of woven, bonded, and knitted products?
A: Woven (denim), bonded (disposable masks), knitted (jumpers).
Q: What is pattern drafting and why is it used in textile production?
A: Creating templates to guide fabric cutting for accurate garment construction.
Q: How do you accurately join fabrics using a sewing machine?
A: Align fabric edges, use straight/zigzag stitch, maintain even seam allowance.
🌲 Timbers (Woods)
Q: What is a carbon footprint and how can it be reduced in manufacturing?
A: Carbon footprint is total COâ‚‚ emissions. Reduce by using sustainable timber, local materials, and efficient processes.
Q: What are the social impacts of timber product manufacturing?
A: Deforestation, fair trade issues, labor conditions, community impact.
Q: What stock forms and components are available for timber?
A: Planks, boards, dowels, MDF, plywood, etc.
Q: How is quality control and tolerance maintained when manufacturing with timber?
A: Through measuring, inspection, jigs, and clear manufacturing specs.
Q: How and why are modifications made to wood?
A: To improve durability, resistance, or workability (e.g., pressure treatment).
Q: What hand tools are used with wood and how?
A: Saws, chisels, planes—used for cutting, shaping, and smoothing.
Q: How is wood joined by addition and what are joint types and uses?
A: Butt joints, dovetail, mortise & tenon—used based on strength and aesthetics.
Q: What are production aids and their uses?
A: Jigs, templates, moulds—ensure accuracy and repeatability in mass production.
Q: What machines and power tools shape and form wood?
A: Bandsaw, drill press, lathe—used for cutting, drilling, shaping.
Q: What are pros and cons of machine tools vs hand tools?
A: Machine tools = fast and precise, but costly. Hand tools = cheap and flexible, but slower.
Q: What commercial processes shape and form timber and why?
A: CNC routing, lamination, steam bending—used for efficiency and complex shapes.
Q: What timber processes are used to bend and form into shape?
A: Steam bending, laminating—used for curves and unique forms.
Q: How do you prepare, finish, and apply timber finishes?
A: Sanding, staining, varnishing—improves appearance and protection.
Q: Why are different products made with different production methods?
A: Depends on volume needs: prototypes, batch, mass, or continuous production.