Manufacturing Process Families
Classifying wastage, addition, deforming, reforming, joining and assembly processes and selecting them theoretically from material, geometry and scale.
How to prepare for the GCSE Design and Technology written exam
Move from requirement to evidence, technical principle, comparison and justified decision. Use current board materials separately for the NEA and for full timed-paper rehearsal.
Core concepts
Concept 1
Wastage removes material, addition builds or deposits material, deforming changes shape without adding or removing the bulk, and reforming reshapes material through a softened, molten or reconstituted state.
Exam cue: Classify the transformation first, then name an appropriate process where the specification requires it.
Concept 2
Joining may be permanent, semi-permanent or temporary, and selection depends on load, material compatibility, access, appearance, maintenance and disassembly.
Exam cue: Compare process capability with the geometry, material and production quantity.
Concept 3
A process decision must connect material behaviour, geometry, precision, finish, production quantity, tooling, energy, waste, skill, time and cost.
Exam cue: Explain one process advantage and one constraint in the stated scenario.
Risk pitfalls and guardrails
Assuming additive processes create no waste.
Guardrail: Do not substitute one board's specialist route or current product claim for the multi-board core, and do not turn written process knowledge into NEA or practical submission material.
Naming a process that is incompatible with the material state or geometry.
Guardrail: Do not substitute one board's specialist route or current product claim for the multi-board core, and do not turn written process knowledge into NEA or practical submission material.
Giving practical step-by-step production instructions instead of written selection reasoning.
Guardrail: Do not substitute one board's specialist route or current product claim for the multi-board core, and do not turn written process knowledge into NEA or practical submission material.
Memory anchors
Wastage
Shaping by removing material from stock.
Addition
Creating form by adding or depositing material.
Deforming
Changing material shape without removing or adding its main volume.
Reforming
Creating a new form from material softened, melted or reconstituted for shaping.
Joining
Connecting components through mechanical, adhesive, thermal or integral means.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What is a wasting process?
Which process shapes metal by forcing it between rotating rolls?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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