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Cone Development Technology: Step-by-Step Guide

Learn how to develop the surface and true shape of a cone with detailed instructions and diagrams. Perfect for students and professionals in graphic communication.

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Cone Development Technology: Step-by-Step Guide

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  1. MintlawAcademy Graphic Communication Cone Development Technology Department

  2. 1 2 1 1 1 1 0 2 9 3 8 4 7 5 6 7 1 0 1 1 1 2 1 2 8 9 1 0 1 1 9 3 6 1 2 5 8 7 6 5 4 4 3 2 1 Development of surface (1) • Mark the position where the apex of the Development will be placed. 9 Draw the first generator. 2 1 Draw the base line of the Development. 12 Step off the size to each generator point along the base. 11 10 Number each of the points found. 9 8 Draw generator lines from the apex to each of the points on the base. 7 6 5 4 3

  3. 1 2 1 1 1 1 0 2 9 3 8 4 7 5 6 1 0 1 1 1 2 9 8 7 6 Development of surface (2) It is necessary to find the ‘true length’ of the cut points along each generator. To find these sizes project a line through each point on the cut of the Elevation to the outside generator. • Mark each of the found points with a small dot. 3 2 1 12 11 10 9 8 7 6 5 4 7 1 2 8 9 1 0 1 1 3 3 6 1 2 5 5 4 4 3 2 1

  4. Development of surface (3) • Measure the distance from the apex to each point on the outside generator. 1 2 1 1 1 1 0 3 2 Transfer this size to the correct generator on the Development. 2 9 3 1 8 4 12 7 Mark each point with a small dot. 5 6 11 10 Draw a smooth curve through each point found. 9 8 Darken each of the other outlines on the Development. 7 6 5 4 7 1 0 1 1 1 2 1 2 8 9 1 0 1 1 3 9 3 6 1 2 5 8 7 6 5 4 4 3 2 1

  5. True Shape of cut (1) • Project each of the points on the cut of the Elevation away at right angles to the cut surface. 10 9 11 8 7 1 2 12 1 1 6 1 1 3 1 0 5 2 2 4 2 3 9 3 Draw a datum line on the True Shape – in this case the centre line has been chosen. 1 8 4 12 7 5 6 11 10 Number each of the lines projected up to the True Shape. 9 8 7 6 5 4 7 1 0 1 1 1 2 1 2 8 9 1 0 1 1 3 9 3 6 1 2 5 8 7 6 5 4 4 3 2 1

  6. True Shape of cut (2) • Measure the sizes from the cut points to the centre line on the Plan and transfer each of these sizes to the correct lines on the True Shape. • Note – These sizes can also be measured from the End Elevation. • Mark each of the points with a small dot. 10 9 11 8 1 2 7 12 1 1 1 6 1 1 0 3 5 2 2 4 2 3 9 3 1 8 4 12 7 5 6 11 10 9 8 7 6 5 4 7 1 0 1 1 1 2 1 2 8 9 1 0 1 1 3 9 3 6 1 2 5 8 7 6 5 4 4 3 2 1

  7. True Shape of cut (3) • To finish the True Shape draw a smooth curve through each of the points found. 10 9 11 8 1 2 7 12 1 1 1 6 1 1 0 3 5 2 2 4 2 3 9 The final drawing should look like this. 3 1 8 4 12 7 5 6 11 10 9 8 7 6 5 4 7 1 0 1 1 1 2 1 2 8 9 1 0 1 1 3 9 3 6 1 2 5 8 7 6 5 4 4 3 2 1

  8. PowerPoint Presentation. 2003

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