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AutoCAD 2D_I
Module 3: Freehand Pictorial Sketching
Module Objectives
After the completion of this module, the student will be able to: 1. Identify the importance of freehand pictorial
sketching.2. Correctly produce good quality freehand
pictorial sketches.
Introduction
Introduction
Freehand sketching is a very important skill in Design and Graphics that everyone can improve. Sketches can transfer ideas, instructions, and information in a clear and concise way however; this requires the sketches to have the same proportions as the original drawing/object.
An example is shown in the next figures.
Introduction
Freehand SketchingDrawing using Tools
Sketching
Sketching
Sketching requires drawing freehand straight lines that are nearly straight. To draw a nearly straight line from one point (A) to another (B). With the pencil on point A, look to the point B then draw the line as shown below
Sketching
Don’t look at the pencil point. Look to the point where you are going to. Your line should be as straight as the one shown below
Five stages sketch an object in good proportions
Activities
Practical Task 1 Practical Task 2
Next
Isometric Projection
Isometric Projection
Isometric drawings are drawn with the aid of a 60/30 set square and a tee square. Isometric drawings are constructed using lines at 30° to the horizontal and vertical lines as shown in the next figures.
Next
Figures
Isometric Projection
Note: isometric drawings use the same stages as sketching• Always start by faintly drawing the three axes of the
component with the 60/30 set square.• Make off the height, width and length along the
appropriate axis. Fig. 3.5 a.• Complete the box that will contain the finished object.
Fig. 3.5 b.• Still using feint lines build in the shape required. Fig.3.5
c.• Finally line in with a more bold line type. Fig. 3.5 d.
Figures
Activities
Practical Task 3 Home works
Next
The End