20-10-2012, 11:57 AM
Introduction to engineering drawing
[attachment=36804]
Drawing Material
Drawing table
Obtain in various size.
Straight and accurate
The paper is fasten to the table by using masking tape or clip
Made from wood with laminate finish.
The surface can easily scretch by sharp objects.
Drawing Board
Obtain in various size.
Straight and accurate
The paper is fasten to the board by using masking tape or clip.
Made from wood
.Drawing paper
Obtain in various size and thickness
Size according to International standard (A0 to A4)
- White and cream are used
- The greatest preference is for cream or buff papers.
- The paper is paste using masking tape or clip
Sharpening the pencils.
Keep your pencil sharp
Cutter is used to sharpen the leads.
The preferred distance of sharpen wood 2cm - 3cm.
Leave about 1cm of lead extending uncut beyond the wood
Leads which are sharp will produce accurate, clean and dark lines.
Pencils of less than 7.5cm should be used.
Mechanical pencils
Refill drafting leads and no wood to sharpen.
Save time and cost
Obtain in different sizes and grades:
0.35 mm
0.5 mm
0.7 mm
1.0 mm
- Thin leads produce uniform width lines without sharpening.
Compass
Comes in set (with divider).
With pencil and inking attachments.
Used to draw circles approximately 25 mm radius or larger.
A bow compass is used to draw small circle.
Cheep compass have unstable setting compare to expensive one.
Circle and Ellipse Template
They are plastic with a number of accurate circles cut out.
They are used to draw circles of set diameters/sizes.
Particularly useful if the circle is small.
The circle diameter is selected and a sharp pencil is used to draw round the cutout circle.
Ellipse templates are similar to circle templates and these are useful for drawing ellipse / oval shapes accurately.
[attachment=36804]
Drawing Material
Drawing table
Obtain in various size.
Straight and accurate
The paper is fasten to the table by using masking tape or clip
Made from wood with laminate finish.
The surface can easily scretch by sharp objects.
Drawing Board
Obtain in various size.
Straight and accurate
The paper is fasten to the board by using masking tape or clip.
Made from wood
.Drawing paper
Obtain in various size and thickness
Size according to International standard (A0 to A4)
- White and cream are used
- The greatest preference is for cream or buff papers.
- The paper is paste using masking tape or clip
Sharpening the pencils.
Keep your pencil sharp
Cutter is used to sharpen the leads.
The preferred distance of sharpen wood 2cm - 3cm.
Leave about 1cm of lead extending uncut beyond the wood
Leads which are sharp will produce accurate, clean and dark lines.
Pencils of less than 7.5cm should be used.
Mechanical pencils
Refill drafting leads and no wood to sharpen.
Save time and cost
Obtain in different sizes and grades:
0.35 mm
0.5 mm
0.7 mm
1.0 mm
- Thin leads produce uniform width lines without sharpening.
Compass
Comes in set (with divider).
With pencil and inking attachments.
Used to draw circles approximately 25 mm radius or larger.
A bow compass is used to draw small circle.
Cheep compass have unstable setting compare to expensive one.
Circle and Ellipse Template
They are plastic with a number of accurate circles cut out.
They are used to draw circles of set diameters/sizes.
Particularly useful if the circle is small.
The circle diameter is selected and a sharp pencil is used to draw round the cutout circle.
Ellipse templates are similar to circle templates and these are useful for drawing ellipse / oval shapes accurately.