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

Career & Technical Education 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  Soft lead Optional  Eraser  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 60 ° 30 ° 45 ° Subdivide onceSubdivide twice

Sketching Assignment Complete Chapter 3 Exercise Page 51  Sketch 1-5 (10 times each) Complete Chapter 3 Exercise Page  Sketch each step of the circle, arc, ellipse, hexagon, and octagon once. Then use the technique to sketch 10 examples of each shape. Read Chapter 3 and write the answer to Test Your Knowledge ?s p. 59

Career & Technical Education 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 3Step 4

Multi-view Sketching Technical sketch  Front view  Top view  Side view

Multi-view Sketch TOP VIEW R. SIDE VIEW FRONT VIEW

Single-view/Multiview Sketch Assignment Page Sketch Front, Top, Right of each problem Sketch all sides of a ball with a smilely face Sketch all sides of a child’s play block

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

Pictorial Sketches Three (3) types  Isometric  Oblique  Perspective

Isometric Sketch WIDTH DEPTH 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 WIDTH DEPTH HEIGHT

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 Read p Exploring Drafting Oblique Drawings Sketch Problem ,13,14,15,16  For each sketch cavalier, cabinet, and general oblique  If time allows challenge yourself by completing 12-18

Perspective Sketches 2-Point Perspective1-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 Read Perspective Drawings p Sketch Figure 12-15,12-17,12-18 Sketch p.201 Problem Reproduce Figure using your own plane or car design Extra Credit  Create a perspective sketch of your initials