AQA 7552 / 3.1.7
Rapid prototyping.
Digital design and manufacture · Technical principles
Revision notes
Rapid prototyping produces physical 3D models directly from CAD data, usually using polymer materials.
Rapid prototyping
Benefits
Fast and automated production
Reduces cost compared with traditional modelling
Can produce functional models, tooling, and moulds
Exam clarity:
Rapid prototype = CAD-based
Quick prototype = manual materials (foam, card)
Fused deposition modelling (FDM) / 3D printing
CAD models are sliced into layers and built layer by layer
Uses thermoplastic filament and removable support material
Suitable for bespoke and one-off production
Metal 3D printing produces complex parts with no weak joints
Common materials include ABS, titanium, stainless steel, aluminium
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