Advantages and disadvantages of CAD CAM

Computer Aided Design

Using 2-dimensional CAD software, designers can create accurate, scaled drawings of parts and assemblies for designs. It can also be used to develop and firm up design ideas by concentrating on single views and using the range of geometric tools available.

Orthographic drawings can be used for reference during manufacturing and assembling components.

They can also be converted into cutting paths for 2-dimensional machining of outline shapes, pockets and grooves on CNC machines.

These days most drawings are generated automatically from 3D CAD models - dimensions for manufacture and other details are then added to the drawing



  • More accurate than traditional hand drawn orthographic drawings.
  • Faster to produce and less labour intensive.
  • Multiple copies can be stored, printed and shared electronically.
  • Can be easily edited and design modifications do not generate endless re-drawings of the original design.
  • Storage of large paper drawings is no longer an issue.
  • Drawings can be automatically scaled and re-scaled as necessary.
  • Can be used directly to generate cutting data for CNC machines.

  • Traditional drafting skills will be lost as they become unnecessary.
  • More difficult to produce than 3D CAD models and requires more knowledge of technical standards and visualisation skills.
  • Cannot test designs virtually as with 3D models but new modelling software can convert 2D to 3D.

How ICT is used in Design and Manufacturing




Research and Presenting

  • Collecting and recording
  • Using digital images

  • The internet
  • Graphics software
  • Using a digital camera
  • Word processing
  • Video conferencing


  • Creating visuals
  • Developing a specification
  • Creating prototypes
  • Experimental work

  • Graphics software
  • Digital camera work
  • Using a scanner
  • Digital printer
  • Various CAD systems


  • Producing forms and patterns
  • Producing and cutting garments
  • Controlling machinery
  • Costing

  • Lay planning
  • Digital printers
  • 3D body scanning equipment
  • Computerised lathes, milling machines, sewing, knitting and weaving machines
  • Electronic Data Interchange


  • Stock control and dispatch systems
  • Order processing

  • Tagging
  • Databases
  • Spreadsheets
  • Stock tracking software


  • Promoting the product
  • Sales channels and promoting a website
  • E-commerce
  • Security tagging

  • Graphics software
  • Word processing software
  • Digital printer
  • EPOS software (Point of Sale)

woven fabrics
embroidery using fabrics