1. WOOD
MATERIALS TECHNOLOGY
4th Edition

2. Chapter 4
Drawing

3. Pencils
 Different types of pencil are
used for drawing lighter and
darker lines
 Drawings are usually done
with a 2H pencil

4. Drawings
 Drawings give enough
information to allow an
object to be made
 Drawings include
measurements
 Sketches are also used to
give information on a
drawing sheet

5. Scales
 Scales reduce or enlarge the
measurements evenly, so that the
proportions of the object stay the same
 Full size measurements are written on
the drawing
 The scale is also written as a ratio on the
drawing

6. Orthographic projection
 A 2D presentation of a
3D object
 Shows all the views of an
object
 Each view is related to
the others
 Elevations, plans and end
views are included in
orthographic drawings

7. Orthographic views

8. Sections
 Show a cut view of a
piece or object
 Used when detail needs
to be shown clearly
− The section through the
candle holder shows
clearly how the pieces
are joined

9. Pictorial drawing

10. Oblique drawing
 Lines are drawn back at 45° from the elevation
 Draw pieces separately and build up the drawing

11. Isometric axis
 Constructing an isometric axis

12. Isometric drawing

13. Examples of isometric drawing

14. Circles in isometric

15. Dimensions

16. Dimensions worksheet 7
Insert these dimensions on the
drawing supplied

17. Dimensions worksheet 7
Insert these dimensions
on the drawing supplied

18. Dimensions worksheet 8
Elevation
End view
Insert these dimensions on the
drawing supplied
Plan

19. Dimensions worksheet 8
Insert these dimensions on the drawing
supplied