TECHNICAL DRAWINGS
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GENERATING TECHNICAL DRAWINGS TO AID COMMUNICATION
Your Technical Specification covers more than just a single slide in your Final Design section. It actually includes several aspects of this part of your NEA, and is not the same as your Design Criteria (which is sometimes referred to as 'Technical Requirements'). One of the aspects that is included in your Technical Specification is Technical Drawings. You will sometimes hear technical drawings referred to as 'working drawings'.
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The purpose of technical drawings is to communicate information. You must do this for every part of your design.
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The two main technical drawing conventions are orthographic and isometric. Both of these types of technical drawing convey information that would otherwise be difficult to communicate to what we call a 'third party'. A third party is simply someone who might need to take your design and do something with it - such as make a prototype or manufacture it for the consumer market. In your NEA, you need to imagine that a third party is going to be looking at your design - what information do you need to give them?
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Orthographic and isometric drawings are normally used in combination with one another, in order to convey enough information about the design. OnShape allows you to generate technical drawings that display both of these views. You can then ask it to add additional details such as extra dimensions and views that you think would be of benefit.
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The mark scheme says:
Generating technical drawings in OnShape
By far the best option is to generate your technical drawings in OnShape. This will ensure accuracy. You may, however, supplement these with your own hand drawn technical drawings if you wish.
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Please watch this video even if you have made technical drawings in OnShape before, as it has some helpful tips that you may not know about.
Exemplars
