DRAFTING MATERIALS AND TOOLS, ITS USES/

FUNCTIONS

1.) DRAWING PAPER:Various types of drawing papers are available for use but hard and soft surface drawing papers are highly recommended to be the best.

1.) DRAWING PAPER:This type does not groove easily when pressure is applied to the pencil. Oslo paper is commonly used but bond paper is alsorecommended.

Drawing Paper

2. MASKING TAPEused for fastening the drawing paper on the drawing table or drawing board because it does not damage the board and it will not damage the paper if it is removed by pulling it off.

MASKING TAPE

3.) PENCIL SHARPENER:Pencils should be sharpened whenever they show sign ofdullness.

SHARPENER

4.) ERASER:used to clean the dirt off the drawing.

ERASER

5.) DRAWING PENCIL:one of the most important tools in drawing. It comes in various grades.

5.) DRAWING PENCIL:The grade of pencil to be used depends on the quality of paper to be used. You have to take into consideration also the type of line work required.

a.) Hard Pencil:are used where extreme accuracy is required especially working on graphs, diagrams and charts.

a.) Hard Range

b.) Medium Pencilused for general purpose work in drawing.

b.) Medium Range

c.) Soft Pencils:are too soft to be used in mechanical drafting. They are very useful for art work of various kinds.

c.) Soft Range

6.) TRIANGULAR SCALEThis is a tool generally used when reproducing a drawing in an enlarged or reduced form to some regular proportion.

6.) TRIANGULAR SCALE

7.) ERASING SHIELDThis tool is made up of metal with irregular holes. It is a useful tool to protect the rest of the drawing when clearing up smudges, unnecessary pencil lines and other erasures

7.) ERASING SHIELD

DRAWING INSTRUMENTS

DRAWING INSTRUMENTSused for drawing and designing purposes.

DRAWING INSTRUMENTS

1.) T-SQUARE:used when making horizontal lines. It is also used for guiding triangles when drawing vertical lines.

1.) T-SQUARE:

3 TYPES OF T-SQUARE

A.) FIXED HEAD:The head is fastened to the blade. It is used for ordinary work.

B.) MOVABLE HEAD:It has one fixed and one adjustable head and used only for occasional drawing.

C.) DETACHABLE HEADIt is designed for comfort when carrying the T-square.

2.) TRIANGLE:It is a three-sided ruler, which typically has two equal sides meeting at a 90 degree angle and to a third side at 45, 30, including 60 degree angles.

2.) TRIANGLE:It is usually made of plastic and comes in different sizes. If in use, the base of the triangle must rest on the blade of the T-square. Drawing a line always starts from the point near the base going upward.

2.) TRIANGLE

Commonly Used Triangles are:

1.) 30 degrees x 60 degrees2.) 45 degrees x 45 degrees

3.) COMPASSused when drawing arcs and circles. It is used in a similar way to a divider

3.) COMPASS

4.) DIVIDER:used when transferring measurements, dividing lines and arcs into the desired number of equal parts.

4.) DIVIDER

5.) PROTRACTORIt is a semi-circular instrument divided into 180 equal parts, each of which is called a degree. It is used to determine gradations of the degrees when measuring arcs, angles and circles.

5.) PROTRACTOR