# Sketching by gR1AvP38

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```									                          Career &
Technical
Sketching

2.00
Explain and demonstrate basic
sketching skills and techniques.
Career &
Technical
Sketching Concepts

2.01
Explain the concepts related to
sketching.
Purpose of a Sketch

   Quickly & easily get an idea
on paper
   Design sketches
   Freehand technical sketches
   Technical illustrations
Freehand Technical Sketch
Design Sketch
Technical Illustration
Sketching Materials

   Paper
   Pencil             Optional
 Grid Paper
Sketching Technique

   Proportion

   Clarity

   Sketching Aids
Sketching Lines

   Vertical lines
   Top to bottom

   Long straight lines
   Series of short straight lines
Sketching Circles & Arcs

   Begin by lightly constructing a square
Sketching Angles

   Begin with 90° angle
45°              60°

30°

Subdivide once   Subdivide twice
Sketching Assignment
Career &
Technical
Sketching

2.02
Explain the concepts and principles
underlying isometric, oblique and
multiview sketching.
Sketching

   Types of Sketches
   Single-view
   Multi-view
   Pictorials
Single-view Sketching

   Technical purposes

   Front view
   Most descriptive features
Steps for Single-view Sketching
Object

Step 2
Step 1

Step 3           Step 4
Multi-view Sketching

   Technical sketch
   Front view
   Top view
   Side view
Multi-view Sketch

TOP VIEW

FRONT VIEW      R. SIDE VIEW
Single-view/Multiview Sketch Assignment
Pictorial Sketches

   Quickly communicate an idea
   Three dimensions in one view
   Width
   Height
   Depth
Pictorial Sketches

   Three (3) types
   Isometric
   Oblique
   Perspective
Isometric Sketch
HEIGHT
Isometric Sketching

   Three equally
spaced axes
of 120°
Isometric Sketching

   Receding lines
   Typically 30°
off horizontal
Isometric Sketching

   Circular
shapes
appear as
ellipses
Isometric Ellipses

   Correct
ellipse
orientation
Isometric Sketching

   Non-Isometric
lines
   Locate
endpoints
and connect
Isometric Sketching Assignment
Oblique Sketch

HEIGHT

WIDTH
Oblique Sketching

   Front view is
drawn true
shape and size
Oblique Sketching

   Receding
edges are
usually drawn
at an angle of
30°, 45°, or 60°
Oblique Sketching

   Circles and
curves drawn
on frontal plane
will appear true
shape and size
Oblique Sketching Assignment
Perspective Sketches

1-Point Perspective   2-Point Perspective
Perspective Sketches

   Objects appear as the eye
would see them
   Most realistic type of pictorial
sketch
   Most difficult pictorial sketch to
draw
Perspective Sketching Assignment

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