CAD - Advantages: Designs easily altered, Can be faster to draw complex shapes, Designs can be easily saved and recalled, Parts of designs can be easily resused, Designs can be emailed, Designs may be worked on by a team simultaneously, Photo-realistic rendering can be done, Designs can be simulated to judge ease of manufacture, Stress testing can be done before manufacture, CAD - Disadvantages: Software can be complex to learn, Software can be expensive, Not all software is compatible, Security - risk of hacking, Software requires regular updates, Computer memory etc needs updating as software improved, Data can be lost - e.g. powercuts, CAM - Advantages: Faster than traditional machine tools, More accurate than traditional manufacture, Products can be repeated accurately, Humans need breaks - unlike machines, Can produce work directly from CAD files, CAM - Disadvantages: Machinery is expensive, Manufacture technicians need training, Specialist engineers required for maintenance or repair, Leads to less employment,

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