Department of Technological Education Graphic Communication Hexagonal Prism

Department of Technological Education Graphic Communication Hexagonal Prism

Department of Technological Education Cut Hexagonal Prism - Question The given views show the Front Elevation and Plan of a cut hexagonal prism. Draw the following views : End Elevation Surface Development of sides True Shape of cut

Department of Technological Education Finding position of End Elevation Project the outline of the End Elevation from the Front Elevation and the Plan.

Department of Technological Education Identifying Generators Number each of the points on each of the views. 1 2 6 1/2 3/6 4/5 6 3 5 4 1/5 2 /4 3

Department of Technological Education Finding Cut Surface on End Elevation Project from the cutting line on the Elevation to find the cut points on the End Elevation. 1 2 6 1/2 3/6 4/5 6 Join each of the points to find the cut shape on the End Elevation 3 5 4 1/5 2 /4 3 When you are sure that the view is correct, darken the outlines of the End Elevation.

Department of Technological Education Drawing Surface Development (1) To draw the Development of the sides of the prism, project the base line and the height from the Front Elevation. 1 2 6 1/2 3/6 4/5 6 Draw a vertical generator to indicate where the Development will start, and then step out the width for the six sides. Draw generators through each of these points. Number each of the generators starting with either the highest point or the lowest point. 3 5 4 1/5 2 /4 Project each of the cut points from the Elevation onto the appropriate Development generator and draw straight lines to indicate the shape of the Development. 3 6 1 2 3 4 5 6

Department of Technological Education Drawing Development (2) The outlines of the Development have been darkened. ‘Fold lines’ have been added to the Development to indicate where the ‘bends’ have to be. 1 2 6 1/2 3/6 4/5 6 3 5 4 1/5 2 /4 3 6 1 2 3 4 5 6

Department of Technological Education Drawing Development (2) n The outlines of the Development have been darkened. ‘Fold lines’ have been added to the Development to indicate where the ‘bends’ have to be. 1 2 6 1/2 3/6 4/5 6 3 5 4 1/5 2 /4 3 6 1 2 3 4 5 6

Department of Technological Education Drawing True Shape of cut surface To find the True Shape, project the cut points away from the Front Elevation at right angles to the cut. 2 3 1 1 Draw a datum line on the True Shape parallel to the cut line of the Front Elevation and at right angles to the lines just projected. Also add a datum line to the plan. 2 4 6 6 5 1/2 3/6 4/5 6 Measure the vertical distances from the datum to each of the cut points. Transfer these sizes onto the True Shape. 3 5 4 1/5 2 /4 3 6 1 2 3 4 5 6

Department of Technological Education Finishing the drawing To finish the drawing darken the outlines of the True Shape 2 3 1 4 6 5