1. Alphabet of Lines Sketching

2. OBJECTIVES • 6 types of lines • What is sketching

3. Sketching • What is it: • A simple, visual way of communicating a design. • Rough drawing of an object. • Why create a Sketch: • Done quickly, without the use of tools (freehand). • Shows an outline and few details of an object.

4. Construction Visible Line Hidden Line Center Line Extension Dimension 3” 6 types of lines

5. Construction Lines • Extremely light lines used for constructing a drawing.

6. Visible Lines • Dark lines of the actual object which are drawn over the lighter construction lines.

7. Hidden Lines • Used to show invisible parts that otherwise could not be shown.

8. Center Lines • Used to show the center of a circle or hole.

9. 3” Extension Lines • Extend from the object with a gap about 1/16”

10. 3” Dimension Lines • Has an arrowhead at each end indicating the length of the object.

11. End of Part 1 • Try sketching these objects using graph paper: 1. Base Plate 2. Shim 3. Sheet Metal Stamping (Day 2) 4. Inlaid Linoleum Block (Day 2)

12. Part 2:Orthographic Drawings • Also known as Three View Drawings or Multi-View Drawings

13. Parts of a Three View Drawing • Front View • It is a drawing of an object looking at it head on. • The front view is usually placed in the lower left corner of the drawing.

14. Front View

15. Top View • It is done looking down on the object and drawing a “bird’s eye view” of it. • The top view is placed directly above the front view.

16. Top View Front View

17. Right Side View • It is done by rotating the object and drawing the right side. • The right side view is placed on the right lower corner of the drawing.

18. Top View Side View Front View

19. Projection Lines • Projected from front and top views that gives the length and location of parts. • These lines are drawn very lightly.

20. Top View Front View Projection Lines Side View