Lesson 1 intro to drawing, Lecture notes of Engineering Drawing and Graphics

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Engineering

Drawing

Traditional

Drawing Tools

1. T-Square 2. Triangles

DRAWING TOOLS

3. Adhesive Tape 4. Pencils

HB for thick line 2H for thin line

DRAWING TOOLS

7. Pencil Eraser 8. Erasing Shield

DRAWING TOOLS

9. Circle Template 10. Tissue paper

DRAWING TOOLS

Freehand

Sketching

Straight Line

1. Hold the pencil naturally.
   2. Spot the beginning and end points.
2. Swing the pencil back and forth between the points, barely

touching the paper until the direction is clearly established.

4. Draw the line firmly with a free and easy wrist-and-arm motion

Nearly vertical

inclined line

Nearly horizontal

inclined line

Small Circle

Method 1 : Starting with a square

1. Lightly sketching the square and marking the mid-points.
   2. Draw light diagonals and mark the estimated radius.
2. Draw the circle through the eight points.

Step 1 Step 2^ Step 3

Arc

Method 1 : Starting with a square

Method 2 : Starting with a center line

Basic Strokes

Straight Slanted Horizontal Curved

1 1 2

3

Examples : Application of basic stroke

“ I ” letter (^) “ A ” letter 1

2

3

4 5

6

“ B ” letter

The text’ s body height is about 2/3 the height of a capital letter.

Suggested Strokes SequenceLower-case letters

GOOD Not uniform in style.

Not uniform in height.

Not uniformly vertical or inclined.

Not uniform in thickness of stroke.

Area between letters not uniform. Area between words not uniform.

Example : Good and Poor Lettering