The document provides an introduction to technical drawing, covering various types including sketches, isometric drawings, and orthographic projections. It emphasizes the importance of conventions in measurements and line types, as well as the necessary materials and techniques for accurate drawing. Additionally, it outlines page setup requirements and includes references for further learning.

1. INTRO TO
TECHNICAL
DRAWING
VCD
MS. SIERRA

2. TECHNICAL DRAWING

3. TECHNICAL DRAWING

4. TECHNICAL DRAWING
Drawing types:
1. Sketches
2. Isometric drawings
3. Orthographic projections
When is a sketch useful?
1. When we need to convey
our creative idea (subject)
2. Who is going to see the
communication (audience)
1. Sketch
(hatch rendering)

5. TECHNICAL DRAWING
2. Isometric drawing 3. Orthogonal drawing

6. TECHNICAL DRAWING
(orthogonal)

7. TECHNICAL DRAWING

8. TECHNICAL DRAWING

9. TECHNICAL DRAWING
In Australia the
convention is third angle

10. TECHNICAL DRAWING
Conventions:
1. Measurements –
different types:
parallel,
superimposed, chain,
coordinates
2. Lines – visible,
invisible and centred
(axis of circular
features)
Very accurate!! – get
skills ready for year 12

11. TECHNICAL DRAWING

12. TECHNICAL DRAWING
Materials needed

13. TECHNICAL DRAWING

14. TECHNICAL DRAWING
• Your set squares can be used to draw lines at 45, 60, 30 and
90 degrees
• Always use T-square to support other squares so that all the
lines are parallel
• See demonstration for practise

15. TECHNICAL DRAWINGInstrumental Drawing page borders
10mm
10mm
10mm
13mm 17mm 20mm
YOUR NAME TITLE OF WORK DD-MM-YYYY
YOUR NAME TITLE OF WORK DD-MM-YYYY
Page set-up

16. TECHNICAL DRAWING
10mm
10mm
10mm
10mm
13mm 17mm 20mm
YOUR NAME TITLE OF WORK DD-MM-YYYY

17. TECHNICAL DRAWING
References
• Slideshare: Davidmadle, Shiela bautista, D d Lhiin, Presario
Nyioq, techdesign
• Technologystudent.com
• F. Sierra-Cortes