Working Drawings of a Cube & Other Exercises

Working drawings take the place of lengthy explanation, either written or oral. It is by such means that the dimensions are shown, dimension being an extent in anyone direction, and are three in number, length, breadth and thickness. These dimensions apply only to solids and not to hollow objects, They apply regardless to position.

Lines, Etc., Used in Working Drawings

Working drawings show only the outlines of the object. The real shape is to be judged by the positions of the separate views and the lines connecting them. These lines tell us that certain angles, edges, and surfaces come in contact. By these means, we understand the form that will result.

The lines used arbitrarily define the things they represent. Besides the lines, certain characters are used as abbreviations, as for instance, in place of “feet” and “inches,” represents feet and represents inches. The diagram on below contains the lines used in industrial drawing.

Working Drawing of a Cube

The upper drawing shows how a drawing is laid out from which to construct a cube. In the lower drawing the result is shown. The heavy lines only are the outlines, the fine lines indicate where the cardboard or paper is to be bent, and the triangles are the’ parts to be pasted.

First draw the central horizontal line; then the four circles in a row. Then draw two horizontal lines above and below the circles. Next, draw the short center lines intersecting the horizontals, including the short lines beyond, above and below. Now draw the perpendicular lines that form the cube, and the oblique lines. To establish the extent of the latter, describe segments of circles with the same radius as the others at the points of contact of horizontal and perpendicular lines with the circles.

For exercise, make working drawings of a table, a chair, a music stand, etc.