CAD:
CAD systems make it easier for a designer to produce an idea that looks realistic.
CAD software produces:
- orthographic 2D drawings
- 3D virtual reality models
- A wide range of symbols and dimensions,which can be easily placed onto a drawing.
ADVANTAGES:
- Much quicker and less time consuming
- drawings can be veiwed from any angle
- stores lots of info saving space
- easier to make changes
Like the system `crating` by hand,the CAD system can use a `wire frame` technique,where you can veiw right through an object(called virtual modelling)
Rapid prototyping takes virtual designs from CAD and uses a modelling machine to see what the object will look like at final construction.
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