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# Sketching Techniques - PowerPoint PPT Presentation

Sketching Techniques. Purposes of Sketching. Think through a design – look at it instead of just thinking about it Communicate your ideas – let others look at what you are thinking Uses lines and symbols to describe a design – it takes a lot of words to describe even a simple shape.

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### Sketching Techniques

• Think through a design – look at it instead of just thinking about it

• Communicate your ideas – let others look at what you are thinking

• Uses lines and symbols to describe a design – it takes a lot of words to describe even a simple shape

Draw a 3” horizontal line

Draw a 3” line extending from one end of the horizontal line at 45 degrees

Connect the ends of the two lines with a third line

• Brainstorming ideas

• Piggy backing on variations

• Communicate

• Pass on information

• Document Dimensions

• Size of surfaces and features

• Convenient

• Inexpensive

How many words would it take you to describe this pair of pulleys?

There would be a lot of assumptions and prior knowledge necessary for someone to be able to draw this from a verbal description

Sketching a Line

1)

2)

3)

Vertical Line

Horizontal Line

Rise

Run

Sketching Techniques #1

Lines (if you didn’t have graph paper)

diameter

1) Set up the

diameter

3) Sketch

diagonals

Sketching Techniques #1

Sketching a Circle in 5 steps

The lines in steps 1 – 5 should be thin and light

(barely visible) “Construction Lines”

centers

5) Sketch arcs

Sketching Techniques #1

Sketching a Circle

The lines in steps 1 – 5 should be thin and light

(barely visible) “Construction Lines”

Construction

Object

Hidden

Center

Construction Line

Object Line

Hidden Line

Center Line

Microsoft, Inc. (2008). Clip Art. Retrieved October 20, 2008, from http://office.microsoft.com/en-us/clipart/default.aspx