Drawing to discuss
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Flip to reveal answersIsometric vs orthographic — what is each for?
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All 4 Flashcards — Drawing to discuss
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Question
Isometric vs orthographic — what is each for?
Answer
Isometric shows the whole object in three dimensions to communicate a concept. Orthographic gives front, plan and side in true size so a manufacturer can work to the dimensions.
Question
What do dashed and chain-dotted lines mean on an orthographic drawing?
Answer
Dashed is a hidden edge — real, but not visible from that direction. Chain-dotted is a centre line, marking the axis of a hole or cylinder.
Question
First angle vs third angle projection?
Answer
Third angle places each view on the side you looked from; first angle places it on the opposite side. The symbol on the sheet says which, because reading it wrongly produces a mirror-image part.
Question
When is an exploded drawing the right choice?
Answer
When the question is about the ORDER of assembly — which part goes on first and which fixing goes where. An assembly drawing shows the fitted result but not the sequence.
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Full study notes for Drawing to discuss
Topic 6.2 hub
Modelling and prototyping
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Design Technology exam skills
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