Tuesday, October 20

Objective:

Students will learn the fundamentals of oblique sketches.

Bellringer:

In the term 3-D, what are the three dimensions of an object?

4 MINUTES REMAINING…

Tuesday, October 20

Objective: Students will learn the

fundamentals of oblique sketches.

Bellringer: In the term 3-D, what are the

three dimensions of an object?

3 MINUTES REMAINING…

Tuesday, October 20

Objective: Students will learn the

fundamentals of oblique sketches.

Bellringer: In the term 3-D, what are the

three dimensions of an object?

2 MINUTES REMAINING…

Tuesday, October 20 1 minute left….

Objective: Students will learn the

fundamentals of oblique sketches.

Bellringer: In the term 3-D, what are the

three dimensions of an object?

30 Seconds Remaining…

10 Seconds Remaining…

October 20, 2009

AGENDA:1 – Bellringer

2 – Collect Isometric Sketches # 1 – 11 (last chance for completion is 4pm today)

3 – Introduction to Oblique Sketching

HOMEWORK1.Study flashcards2.Oblique Sketching

Worksheet (3 practice and 3 questions)

An Oblique pictorial starts with a straight-on view of one of the object’s faces, which is often the front face.

Angled, parallel lines are drawn to one side to represent the object’s depth. Common oblique angles include 30°, 45°, and 60°.

Oblique Pictorials

45°

There are two types of oblique pictorials: cavalier and cabinet. The difference between the two is based on how the depth of the object is represented.

Types of Oblique Drawings

Oblique Cavalier Oblique Cabinet

Types of Oblique Drawings

Oblique Cavalier

Oblique Cabinet

A general oblique is a type of oblique pictorial that represents an object’s width and height, but the depth can be any size and drawn at any angle.

The idea is to worry about getting the thought down as a sketch not worrying about the depth or angle.

General Oblique

Oblique SketchesStep #1: Create construction box.

Step #2: Use points and construction lines to identify edges that occur on the surface of the box.

Step #3: Trace out the visible edges of the part with thick, dark object lines.

Step #4: Use points and construction lines to identify edges that occur on the surface of the box.

Step #5: Trace out the visible edges of the part with thick, dark object lines.

Tonal Shading

Add tonal shading to two of the three views by drawing parallel lines spaced closely together.

Increase the contrast by cross-hatching the lines on the darkest face.

Vocabulary

• Construction Line• Depth• Edge• Grid• Line Weight• Point• Plane

• Shading• Shape• Proportion• Width• Height• Tone• Scale

Remember, you can view the Pltw .PPT presentation again

inside the Introduction to engineering design First class workspace

October 20, 2009

AGENDA:1 – Bellringer

2 – Collect Isometric Sketches # 1 – 11 (last chance for completion is 4pm today)

3 – Introduction to Oblique Sketching

HOMEWORK1.Study flashcards2.Oblique Sketching

Worksheet (3 practice and 3 questions)