Sketching Techniques and Practice!

1. Sketching Techniques and Practice!

2. Purposes of Sketching • Think through a design • Convey your ideas • Uses lines and symbols to describe a design

3. Common Uses of Sketching • Brainstorm • Communicate • Document Measurements

4. Advantages of Sketching • Convenient • Inexpensive

5. Pictorial Sketches • Show shape of object • Show height, width, and depth • Common types: • Isometric • Perspective

6. Isometric Sketch • Width and depth lines are drawn at 30° from the horizon line. • One view shows height, width, and depth.

7. Orthographic (Multiview Drawings)

8. Orthographic (Multiview) Sketching • An orthographic sketch is used to show true size and shape. • Each view is adjacent to the other as if unfolded from a 3D shape. • Notice the top view is directly above the front with the right side view directly to the right of the front.

9. Orthographic – View Selection Characteristics for selecting the front view • Best shape & details • Longest dimensions • Fewest hidden lines • Most natural position Which view do you think should be the front? 1 2 3 4 5

10. 2) Square in the diameter 1) Set up the diameter 3) Sketch diagonals Sketching Techniques Sketching a Circle

11. 4) Identify triangle centers 5) Sketch arcs Sketching Techniques Sketching a Circle

12. Alphabet of Lines Construction Object Hidden Center

13. Construction Line Alphabet of Lines Construction Line

14. Object Line Alphabet of Lines

15. Hidden Line Alphabet of Lines

16. Center Line Alphabet of Lines

17. Precedence of Lines Example 1 Object line over hidden lines • Object lines exist over hidden and center lines. • Hidden lines exist over center lines. Example 2 Object line over center line

18. Thumbnail Isometric Sketch Copy and label this cube on your isometric axis.

19. 3D Sketching Techniques Isometric Grid Paper

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