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Orthographic Projection is any projection of the feature of an object onto an imaginary plane. The line of sight is perpendicular to the plane of projection.
Multiview Projection establishes views of an object upon 2 or more planes of projection by using orthographic projection techniques.
Basic question to always ask when selecting a view: “Can the part be easily manufactured without confusion from the drawing?”
Partial Views features.:
Used when space is limited
Used with symmetrical objects
Partial views are sometimes confusing
Used when part of a view is too detailed or too small to place dimensions on it
The word VIEW is placed under the enlarged viewPartial Views & View Enlargement
An outside or inside slightly rounded corner of an object is represented in a multiview as a single contour line.
Line Precedence Sometimes one line will fall on top of another line in a multiview drawing - the drafter will choose the line that is precedent.
Sketching the Layout
Drawing the Layout