Unit 12: C4 Production in context
Topic 12.1: Design for manufacture Questions
Practice 15 exam-style questions for IB Design Technology Topic 12.1. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.
1Identify1 mark
2026
Which question is NOT one of the three used to decide whether a part can be combined?
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When is reducing the parts count NOT an improvement?
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Why is bonding two materials to reduce the parts count not an environmental improvement?
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Adding a draft angle to a moulded part belongs to which strategy?
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Which part should usually be reachable first in a powered product?
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Why does a solid thick boss on a thin moulded wall cause a sink mark?
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Why do so many mouldings have a rectangular hole below a snap hook?
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A designer submits a moulded housing with vertical walls, a solid 8 mm boss, sharp internal corners and a snap hook on an internal face. Explain the four problems and the changes needed.
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Why is design for disassembly often left out?
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Which DfM strategy has the largest environmental leverage?
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Why do design for assembly and design for disassembly conflict?
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Unlock Question12Outline6 marks
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A moulded electric toothbrush is being redesigned. Outline how each of the three DfM strategies would change it, and where two of them conflict.
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A cordless vacuum cleaner is sonically welded shut, with a glued-in battery pack. Explain how it could be redesigned for disassembly.
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Unlock Question14Evaluate6 marks
2026
A manufacturer redesigns a kettle: the parts count drops from 22 to 12, the body is now one moulding with the handle bonded on, and the element plate is welded rather than screwed. Evaluate this against the whole life cycle.
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Unlock Question15Explain6 marks
2026
A torch has a body, an end cap, a reflector, a lens, a bezel ring, a switch body, a switch cap, a spring and six screws. Explain how it could be redesigned for assembly.
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