Flat and isometric working drawings

Techn1_LG_gr8_ch3_fig1.tif 
Figure 1
Tech1_gr8_ch3_figDPS_IsometricProjection_Eng.tif 
Figure 2
Tech1_gr8_ch3_figDPS_PlanView_Eng.tif
Figure 3
Techn1_LG_gr8_ch3_fig2.tif
Figure 4

  • These lines are also referred to as solid lines. They are slightly thicker and darker than construction lines.

    • Techn1_LG_gr8_ch3_fig3.tif 
    Figure 5
    Techn1_LG_gr8_ch3_fig4b.tif 17983.png 
    Figure 6
    chain dash-dot lines.Tech_Gr8_Ch3_Fig7_p37.tif 
    Figure 7
    Tech_gr8_ch3_NewFig8.tif
    Figure 8
    scale. But how does this work?
  • Scale 1:1 This is full scale and means that a centimetre in your drawing shows a centimetre in real life.
  • Scale 1:2 This means that a centimetre in your drawing shows two centimetres in real life.
    • Tech_gr8_ch3_NewFig9_Eng.tif 
    Figure 9
    Tech_Gr8_Ch3_Fig10_p39.tif
    Figure 10
  • Redraw this object to a scale of 1:5. Use a ruler to make this drawing and all the other drawings in this chapter. Use a compass to draw the circle.
    • Show dimensions.
    • Show the centre lines of the circle.
    • Show the scale.
    • sketchspace
  • The lady only sees the red part of the block. Make a sketch of the red part on the grid below.
    Techn1_LG_gr8_ch3_fig17.tif
    Figure 11

    Techn1_LG_gr8_ch3_fig24.tif  

  • Make a 1:10 scale drawing of the front part of this object.
  • Show hidden lines.
  • Show dimensions.
  • Show the scale.
    • Tech1_gr8_ch3_fig12_p41.tif 
    Figure 12
    sketchspace 10088.png Tech_gr8_ch3_NewFig13.tif
    Figure 13: Oblique view
    Tech_gr8_ch3_NewFig14.tif 
    Figure 14: Isometric drawing

    The word "isometric" comes from the words "iso" and "metric".

    "Iso" means "the same", and "metric" means "measurement".

  • Make an isometric drawing of the chalk box on the right on the isometric grid. Use a scale of 1:2.
    • Show hidden lines.
    • Show dimensions.
    • Show the scale.
    Tech_English_LG_Grade8-term1-web-resources/image/Tech_English_Gr8_term1_pg43_img1.png
    Figure 15
    Techn1_LG_gr8_ch3_fig28.tif
  • Make an isometric drawing of the piano on the right on the isometric grid. Use a scale of 1:25.
    • Show hidden lines.
    • Show dimensions.
    • Show the scale.
    • Tech_Gr8_Ch3_Fig16_p44.tif
    Figure 16
    Techn1_LG_gr8_ch3_fig28.tif