Drafting with Auxiliary Views

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Drafting with Auxiliary Views
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Why do we need auxiliary views?

• To show information that is unavailable in other
  views
• To show parts of the object in its true size and
  shape. (E.g. inclined surfaces)

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Getting Started

• Examine the views that are given for an inclined
  surface
• Find the line that is considered the edge view of
  the inclined plane
• In the front view, draw a light construction line
  at right angles to the inclined surface
• From all points in the front view, draw
  projection lines at right angles to the inclined
  surface
• Draw a reference/fold line parallel to the edge
  view of the inclined surface and at a convenient
  distance from it
• Transfer the depth dimensions

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Start by finding the aux. object in true length
(line form)
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Here the face is shown in true length
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Draw lines from all critical points that
intersect a line parallel to the face at 90O
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Find your D lines from the view adjacent to the
view used for the aux.
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Seeing the finished view
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Comparing dimensions from different views
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Checking to see if the object is in true
perspective
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The Important View

• The most important view is the one that is now in
  its true size and shape.