Sketching Techniques
Purposes of Sketching
• Think through a design
• Convey your ideas
• Uses lines and symbols to describe a
design
Common Uses of Sketching
• Brainstorm
• Communicate
• Document Measurements
Advantages of Sketching
• Convenient
• Inexpensive
Sketching Techniques
Horizontal Line
Rise
Vertical Line
Lines
Run
Sketching Techniques
Sketching a Line
1)
2)
3)
Sketching Techniques
Sketching a Circle
1) Set up the
diameter
2) Square in the
diameter
3) Sketch
diagonals
Sketching Techniques
Sketching a Circle
4) Identify triangle
centers
5) Sketch arcs
Question 4
Draw 5 horizontal lines of different
sizes
Draw 5 vertical lines of different sizes
Draw 5 inclined lines of different
sizes
Draw two circles of different sizes.
Alphabet of Lines
Construction
Object
Hidden
Center
Alphabet of Lines
• Construction: Light (very faint) lines used
to get the general shape of the object.
Rule of thumb when you hold your paper
at arms length the lines should disappear.
• Object: Are very dark lines used to show
the perimeter of the object and any special
features.
Alphabet of Lines
• Hidden: Are dark dashed lines used to
show features that are not seen from a
particular view.
• Center: Used to show the center of circles
and arcs. Have two short dash lines to
show the center, with leader lines
extending past the feature.
Alphabet of Lines
Construction Line
Alphabet of Lines
Object Line
Alphabet of Lines
Hidden Line
Alphabet of Lines
Center Line
Conclusion Questions
1. Why is it important that you learn
how to sketch?
Quick way to communicate an idea
to another person.
2. Why is it important to use the
proper line types.
To show true shape, size and details
about the drawing.
Image Resources
Microsoft, Inc. (2008). Clip Art. Retrieved October 20, 2008, from
http://office.microsoft.com/en-us/clipart/default.aspx