The qualities of a good cad cam software may be listed as follows:-

  1. Interactive , three dimensional modelling.
  2. Choice of modelling type, either surface modelling or solid modelling.
  3. Ability to model assemblies and their connections.
  4. Interfaces closely with analysis tools such as FEA, dynamic analysis,mass and section properties,and other modules.
  5. Capability to edit the geometry, including :undo"operations.
  6. Storage of the part description in terms of geometry,topology, dimensions , tolerances,surface finish and ability to store and attach engineering notes to the geometric entities.
  7. Printout the part description in terms of standard engineering drawing format.

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