Section Views

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Section Views

• In this tent you will learn a basic understanding
  on how full section views and offset section
  views work.

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Full section views

• A full section view is made by passing an
  imaginary cutting plane completely through an
  object that you want to section.

• When a part is section viewed all the hidden
  features intersected by the cutting plane are
  represented by visible lines in the section view.

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• Surfaces that are touched by the cutting plane
  will have section lines drawn at 45-degree angle
  to the horizontal. This is done to show where
  the part was cut by the cutting plane.

• Hidden lines are always omitted in section views
  unless they are needed to provide a better
  understanding of the object.

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Section lines

• There are different types of section line symbols
  that can be used to represent various types of
  materials. However, there are so many different
  types of materials that the general symbol that
  is used in technical drawings is the cast iron
  symbol. The spacing in between section lines is
  uniform on a section view.

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Here are a few samples of section line symbols
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Offset section views

• An offset section view has a cutting plane that
  is bent at one or more 90-degree angles in order
  to pass through as many important features as
  possible.

• Usually offset section views are used for complex
  parts that have a number of important features
  that cannot be sectioned using a straight cutting
  plane.

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• When creating an offset section view always make
  sure not to show the change of plane that occurs
  when bending the cutting plane at 90-degrees on
  the section view. In other words do not
  represent the change of plane with lines in the
  section view.

• When using multiple offset section views on a
  single part always make sure to place labels on
  your different cutting planes for identification.

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A full section view