SKETCHING - Cabarrus County Schools

SKETCHING UNIT III ESSENTIAL STANDARD: 3.00 APPLY SKETCHING SKILLS AND TECHNIQUES (ARCHITECTURE AND ENGINEERING) INDICATOR: 3.01 APPLY ROUGH SCKETCHING (LETTER FOR CLARITY,

UPPERCASE CAPS) INDICATOR 3.02 APPLY 2D SKETCHING SINGLE AND MULTI VIEW INDICATOR 3.03 APPLY 3D SKETCHING PICTORALS (ISOMETRIC, OBLIQUE) INTRODUCTION

This unit will cover the purpose of sketching, materials needed for sketching, techniques for sketching, importance of proportions, the types of sketches and differences between isometric, oblique and perspective sketches. PURPOSE OF A SKETCH

Quickly & easily get an idea on paper Design sketches Freehand technical sketches Technical illustrations DESIGN SKETCHES

Rough sketches that are used to quickly capture an idea. They tend to have less detail, structure, and restrictions than free hand or technical illustrations. FREEHAND TECHNICAL SKETCHES Freehand technical

sketches can be Multiview or pictorial sketches. This type of sketch usually includes more detail and structure than design sketches. They also typically

include dimensions. TECHNICAL ILLUSTRATIONS Technical illustrations include more detail, Structure, and Restrictions than other types of sketches. The objective here is to create a sketch that looks as close to the final object as possible.

WHAT TYPE OF SKETCH IS THIS? SKETCHING MATERIALS Paper Plain Grid

Pencil Soft lead REQUIRED CONSISTENCIES Clarity Proportion

TECHNIQUES STRAIGHT LINES VERTICLE HORIZONTAL CIRCLES START WITH A SQUARE FIND THE MIDPOINTS OF EACH SIDE,

AND CONNECT THE MIDPOINTS WITH ARCS. ANGLES 30, 45, 60 DEGREE ANGLES. LINES VERTICAL LINES

TOP TO BOTTOM HORIZONTAL LINES LEFT TO RIGHT SKETCHING CIRCLES AND ARCS BEGIN BY LIGHTLY CONSTRUCING A SQUARE THEN CONNECT IN CIRCULAR MOTION AT THE 90 DEGREE POINTS

SKETCHING ANGLES BEGIN WITH A 90 ANGLE SKETCHING CLASSES OF SKETCHES SINGLE-VIEW

MULTI-VIEW PICTORALS SINGLE-VIEW SKETCHING TECHNICAL PURPOSES FRONT VIEW HAS THE MOST DESCRIPTIVE

FEATURES ON IT. ORTHOGRAPHIC PROJECTION a means of representing a three-dimensional object in two dimensions. It is a form of parallel projection, where all the projection lines are orthogonal to the projection plane, resulting in every plane of

the scene appearing in affine transformation on the viewing surface. STEPS FOR SINGLE-VIEW SKETCHING MULTI-VIEW SKETCHING TECHNICAL SKETCH

FRONT VIEW TOP VIEW SIDE VIEW MITER LINE Miter Line45 degree line draw between the

top view and right side view. PICTORIAL SKETCHES QUICKLY COMMUNICATE AND IDEA THREE DIMENSIONS IN ONE VIEW

WIDTH HEIGHT DEPTH PICTORIAL SKETCHES THREE (3) TYPES ISOMETRIC

OBLIQUE PERSPECTIVE ISOMETRIC SKETCH ISOMETRIC SKETCHING THREE EQUALLY SPACED AXES OF 120

DEGREES ISOMETRIC SKETCHING RECEDING LINES TYPICALLY 30 OFF HORIZONTAL

ISOMETRIC SKETCHING ELLIPSE!! The Isometric Circle!!!! ELLIPSEOval shaped, elongated

along one axis ISOMETRIC ELLIPSES CORRECT ELLIPSE ORIENTATION

ISOMETRIC SKETCHING NONISOMETRIC LINES LOCATE END POINTS AND CONNECT. Draw what you know and then

Connect the dots!! D EP TH

HEIGHT OBLIQUE SKETCH 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 Cavalier Oblique Sketch an oblique sketch where the receding lines are drawn to true length. Cabinet Oblique sketch- an oblique sketch where the receding line are drawn

at of there true length. 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 PICTORAL SKETCH TO DRAW

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