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THE BASICS OF DRAWING

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Nexon Laborte

on 18 June 2014

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Transcript of THE BASICS OF DRAWING

This unit includes the following:

Principles of sketching
Sketching materials
Types of sketches
Techniques in sketching
Direction of strokes
What's inside?
Understand the importance of sketching
Learn the principles carefully and its implications to instrumental drawing.
Develop a deeper insight in sketching techniques
Learning Goals
Commercial or Ordinary Pencil
- common type of pencil used for commercial purposes like office work.
Colored Pencil
- a kind of pencil with different colors of lead.
Charcoal Pencil
- a kind of pencil with less dense carbon granules intended for shading freehand drawings.
Glazed Pencil
- a pencil that marks on shinny surfaces like glass or plastic.
Mechanical or Technical Pencil
- a mechanized pencil provided with a Scipto lead in varying grades.

Common Kinds of Pencil
It is a Freehand systematic use of lines in different positions, constructions and tones assembled together to express an idea.
Usually done outside, and finalized inside the drafting room for details.
It is also a Draft or rough study of the design, form and size of the object.
What is Sketching?
BASICS OF SKETCHING
Sketch should be prepared as Fast as possible.
A properly sharpened pencil must be in Conical form in order to attain a good quality line.
Lines should be sketched in Light tone first.
Eraser should be used as seldom as possible.
Sketching pencil should be sharpened as Often as possible.
Principles that Simplify Sketching
Sketching Materials
Sketch Pad
Cross-Section Paper
Tracing Paper
Ordinary Bond Paper
Pencil
Ballpoint Pens
Permanent Ink Pens
Gel Ink Pens
Mechanical Pencil
Sharpener
Cutter
Markers
Eraser
The grades of drawing pencils are a variation of the density of the carbon granules of the lead. They represented with letters and numbers to determine the degree of hardness. Grades available are:
9H, 8H, 7H, 6H, 5H, 4H, 3H, 2H, H, F, HB, B, 2B, 3B, 4B, 5B, 6B and EE.
Grades of Drawing Pencil
Specific Goals:
Develop the skill in holding the pencil and sketch lines in any direction correctly.
Know and identify the different sketching materials and use them wisely.
Know the different kinds, grades, uses and care of drawing pencils
Uses of Pencil by Grade
9H - it is the Hardest grade.
6B - the Softest grade. Used in shadow drawing.
EE - the latest soft grade added to the family. Used also in shading, giving a charcoal effect.
4H - Used in drawing guidelines and layout work.
HB - The grade used for lettering and sketching.
2H - Grade suggested for mechanical lines
Forms of Pencil Points
Conical - a uniformly tapering point with a rounded tip that used in drawing mechanical lines and in lettering.
Chisel Point - a point with a cut made at one side of the lead sloping to its opposite, forming a bevel.
Wedge Point - point made two sloping cuts at the opposite sides forming a straight line at the center of the tip.
Elliptical Point - a modified or worn-out wedge point.
Screw Driver Point - A point resembling that of a wedge point but slightly beveled to form a screw driver point.
LINE
The path of a point that is allowed to move in space at a desired direction.
a geometrical figure that has for itself a length, position and thickness but no depth for itself
General Forms of Line
SOLID
- kind of line that does not permit any break in a given length.
BROKEN
- Line made up of dots and dashes.
Common Positions of Lines
HORIZONTAL - line that lies flat along the horizon, or the ground level.
VERTICAL - the line that stands upright forming 90 degrees with the horizon.
INCLINED - a line in a position drawn at an angle other than vertical or horizontal. It is also known as Oblique or Slanting.
RELATIONS OF LINES
HORIZONTAL
BROKEN
VERTICAL
INCLINED
CURVE
INTERSECTING
ZIGZAG
PARALLEL
PERPENDICULAR
CONVERGING
DIVERGING
TONES OF SKETCHED LINES
Thickness of the lines varies with the kind and uses of the line drawn.
LIGHT -
used for construction, center and guidelines.
MEDIUM -
tone used for hidden lines.
DARK -
applied in heavy lines like project outlines or cutting plane lines
Full transcript