Computer+Aided+Design+in+topic+1.

Step 1. "Bottom up" modelling. Defining the form by addition.

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Step 2. "Top down" modelling. First cut by subtraction.

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Step 3. Top down modelling. Second cut by subtraction.

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​Step 4. Deriving a photo from our design. media type="custom" key="4465275"

Step 5. Deriving a 3rd angle orthographic drawing.

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