CAD

You should have knowledge and skills in applying:

• Recognised techniques, customs and practices across 3D modelling and 2D CAD software, including drawing and editing commands and terms

• Standard 2D CAD commands, including import and export

• Techniques to produce orthographic and pictorial work using CAD

• You need to know the following 3D modelling techniques:

  • Extrude (‘extrude cut’ is not acceptable)

  • Revolve

  • Helix (‘coil’ is not acceptable)

  • Loft

  • Sweep/Extrude along a path

  • Surface modelling

  • Freeform (Morphing)

  • Irregular fillet and chamfer

  • Blending

SQA notes on CAD Modelling

Below are some videos which may help with your understanding of the techniques which have been introduced at Advanced Higher.

Sample Exam Question:

Computer-aided design (CAD)

2016: question 5 (b)

You need to understand the processes of carrying out the test and the outcomes of the test.

You may be asked about advantages and disadvantages of such tests, their benefits and limitations.

You may be asked how a test may be used by a professional or what information it communicates to a target audience.

SQA Notes: For digital testing methods you need to understand the process of carrying out a test and the outcomes of the test. You may be asked about the advantages and disadvantages of such tests, their benefits and limitations. In relation to creators and users, you may be asked about how a test may be used by a professional or what information it communicates to a target audience.

Sample Exam Question:

Digital testing methods

2019: question 5 (e)

2D Constraints

You need to be aware of the constraints that can be used for 2D sketches as well as those used for assembling 3D models

3D Constraints:

• Mate

• Align

• Centre Axis

• Offset

• Orientate

• Tangent