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ScotlandGraphic Communication

Technical Graphics (TG)

8 dot points across 8 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

How is a 3D CAD model planned so that it is efficient, editable and robust?

Planning a modelling strategy: choosing the base feature and datums, using constraints and the feature tree, and building parametric models that edit cleanly.
An SQA Advanced Higher Graphic Communication answer on 3D CAD modelling strategy, covering how to choose a base feature and datums, apply geometric and dimensional constraints, use the feature tree, and build parametric models that edit cleanly.
13 min answer →

How are 3D CAD models built from the core feature-creation techniques?

Creating 3D CAD models using extrude, revolve, sweep, loft and shell, with fillets, chamfers and patterns to add and refine geometry.
An SQA Advanced Higher Graphic Communication answer on 3D CAD modelling techniques, covering how extrude, revolve, sweep, loft and shell create solid geometry, and how fillets, chamfers and patterns refine and add to a model.
13 min answer →

How are separate components combined into a working CAD assembly?

Building assembly models from components using mating constraints and sub-assemblies, producing exploded views and a parts list (BOM).
An SQA Advanced Higher Graphic Communication answer on assembly modelling, covering how components are combined using mating constraints and sub-assemblies, and how exploded views and a parts list or bill of materials are produced.
13 min answer →

Which British Standard conventions make a technical drawing universally readable?

Applying British Standard (BS 8888) conventions: line types, projection and machining symbols, abbreviations, and representing standard features such as threads.
An SQA Advanced Higher Graphic Communication answer on British Standard conventions, covering line types, projection and machining symbols, standard abbreviations, and the conventional representation of features such as screw threads.
12 min answer →

How are sizes, tolerances and surface finish specified on a working drawing?

Dimensioning to British Standards with tolerances, fits and surface-finish symbols, choosing datums and dimensioning systems for manufacture.
An SQA Advanced Higher Graphic Communication answer on dimensioning and tolerancing, covering British Standard dimensioning, tolerances, fits, surface-finish symbols, datums and the dimensioning systems used for manufacture.
13 min answer →

How are pictorial and rendered illustrations used to communicate a 3D form?

Producing pictorial drawings (isometric, planometric and perspective) and rendered CAD illustrations to communicate form, with appropriate use of each type.
An SQA Advanced Higher Graphic Communication answer on pictorial and illustration drawings, covering isometric, planometric and perspective views, rendered CAD illustration, and choosing the right pictorial type to communicate a 3D form.
12 min answer →

How are orthographic component and assembly production drawings produced from a 3D model?

Producing orthographic working drawings: first and third angle projection, the views needed, component and assembly detail drawings to British Standards.
An SQA Advanced Higher Graphic Communication answer on production drawings, covering orthographic projection in first and third angle, selecting the views needed, and producing component and assembly working drawings to British Standards.
13 min answer →

How are sectional views used to reveal internal features on a drawing?

Producing and interpreting sectional views: full, half, part, revolved and removed sections, cutting planes, hatching conventions and parts not sectioned.
An SQA Advanced Higher Graphic Communication answer on sectional views, covering full, half, part, revolved and removed sections, cutting planes, hatching conventions, and the parts that are conventionally not sectioned.
12 min answer →