Drawing Skills power point slides for school

intro to orthographic and Isometric drawing for middle school students

1. Mainly Designing:  ​ Product Design ​ ‘Core Drawing Skills’ ​ ​

2. Learning objectives B y the end of the Lesson, you will: Know methods of communicating design ideas on paper List and describe the main types of lines in engineering drawing Represent objects in 2D using orthographic drawing Represent objects in 3D using isometric drawings

3. What is the difference between ‘drawing’ and ‘sketching’? Two minutes – Discuss with the person next to you and when you may use each one. Drawing vs Sketching

4. But we have Computer Aided Design (CAD)? Is sketching still important if we have C.A.D. programs like Shapr3D, Autodesk Fusion and SolidWorks?

5. The main types of lines in engineering drawing 

6. Visible Object Line Visible Object Lines: Lines are thick and dark; used to define the object Object Line Visible Line Visible Line

7. Hidden Line Hidden Line: Lines used to show interior detail that is not visible from the current outside view of the part . Hidden Lines

8. Centerline and Center Marks: Lines that define the center of arcs, circles, or Symmetrical parts. They are half as thick as an object line . Center Lines Center Mark Centre Line & Mark

9. More examples of Center lines and hidden lines

10. Dimension Line Dimension Line Dimension Line Dimension Lines: lightweight Lines that are used to show distance. Arrows are drawn on the ends to show where the dimension line starts and ends. The actual distance is usually located in the middle of the line to let you know the distance being communicated.

11. Quiz Time! Identify the following line types: a) b) c) d) e) Center Line Center Line / Mark Visible Line Hidden Line Dimension Line

12. Orthographic Drawing / Projection Orthographic drawing is a way of drawing a three dimensional object. Normally the object is drawn as three separate, related views - Front View, Side View and Plan (top) View.

13. Orthographic Drawing / Projection

14. Orthographic Drawing / Projection Orthographic drawing is a way of drawing a three dimensional object. Normally the object is drawn as three separate, related views - Front View, Side View and Plan View.

15. Orthographic Drawing

16. Orthographic Drawing The front, side and plan views are arranged in the positions shown below. They must be drawn accurately. Draw the front view first, followed by the side view. The plan view is drawn directly above the front view.

17. Orthographic Drawing Construction lines can be drawn to make sure that the features of an object are properly aligned.

18. Draw an orthographic projection Setting up your page to draw an orthographic projection. front view plan view side view The most informative and clear side can be selected as the front view. all orthographic projections follow the same layout the front view is drawn first the distance between the views should be equal

19. Using an isometric drawing as a starting point - draw an orthographic projection. 1) Label the front, side and plan view. front view plan view side view 2) Draw the front view in the bottom left hand corner. Draw an orthographic projection

20. Draw an orthographic projection (continued) 4) Draw the plan (top) and side views. Mark hidden lines using a dashed line. 3) Draw construction lines from the front view to help draw the plan (top) and side views.

21. 2) Draw an orthographic projection for the shapes below. Draw an orthographic projection Check list: start with the front view in the bottom left of your page draw construction lines vertically from the front view to the plan and side views ensure all drawings are the same size

22. 3 ) Draw an orthographic projection for the shapes below. Draw an orthographic projection

23. Exit Ticket

24. 2D to 3D When objects are viewed in 3D in D&T, we usually use ‘ISOMETRIC’. This has lines (usually) that are VERTICAL or at 30°

25. 2D to 3D The general rule is NO HORIZONTAL LINES!

26. 2D to 3D

27. Drawing 3D This may help you to draw in isometric... Vertical line Crows foot Person jumping Open book Put the top on

28. 3D Drawings 1 minute drawing task! Draw as many different shaped / sized cubes as you can. Some short, some tall, some long. Remember, ISOMETRIC but it doesn’t have to be super neat. Just getting it down quick.

29. Your turn! Practice copying the isometric drawings on an isometric sheet You may estimate your own proportions. Put a tick when you complete an example.

30. Kahoot Which of the cube isometric drawings is ‘correct’? Can you explain why?