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Lecture--Week02

# Lecture--Week02 - Introduction to Technical Sketches and...

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Introduction to Technical Sketches and Engineering Drawings Dr. Thomas E. Doyle, P.Eng Department of Electrical and Computer Engineering

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Lecture Objectives Geometry of Engineering Graphics 2D DOF Define projection types: Isometric Multiview
Sketching Elements In technical sketching you will be creating drawings for the purpose of sharing ideas visually. This is a critical skill in engineering design for all disciplines. Balance quickness vs neatness - the goal is to communicate your idea efficiently. All sketches will be comprised of two basic elements: Lines Curves (usually circular or elliptical) You will learn to make two kinds of sketches: Isometric (looks 3D) Multiview (looks 2D)

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Faces, Edges, and Vertices Any object can be defined by its boundary . This boundary is made up of surfaces, called faces . Each face is bounded by edges . Each edge is bounded by vertices . Faces can be any mathematically definable surface but we will usually restrict ourselves to planar, cylindrical, conical, and spherical surfaces. Edges can be any curves in three-space but we will generally restrict ourselves to lines, circular arcs, and elliptical arcs. However, the intersection of simple primitives such as two cylinders will result in more complex curves.
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