<p>HAND DRAWING WORKSHOP</p><p>SUMMER 2001  THE DISCOVERY MUSEUMS  TUFTS SCHOOL OF ENGINEERING  LUCENT TECHNOLOGIES FOUNDATION</p><p>By the end of this workshop, you will be able to:  draw two-dimensional views of objects  draw three-dimensional view of objects  construct three-dimensional objects from drawings</p><p>Activities For each step, take your time and we will come around to help you and to answer any questions. Before we begin, let’s draw some objects to see where we all stand in drawing techniques. Exercise 1: Using the blank sheet of paper provided, draw the wooden block on your table. Show at least three sides of the object in two-dimensions. Then, sketch the object in three dimensions. </p><p>A three-dimensional drawing of an object is called an isometric drawing. To assist us in making a 3D drawing, isometric papers have grid lines that are inclined 30 degrees from the horizontal. Exercise 2: Use the isometric paper provided to follow along in the 3D drafting of the wooden object. </p><p>Two-dimensional drawings of an object are called orthographic projections. Several drawings, representing different views or projections of the object, are necessary to fully understand what the object looks like in 3D. Hidden lines ( - - - ) are used to represent features that cannot be seen in a particular view. Center lines ( -·-·- ) are used to represent centers of arcs or circles. Exercise 3: Use the orthographic paper provided to follow along in the 2D drawing of the same object.</p><p>Now that you have created 2D and 3D drawings, let’s now practice converting one type of drawing to the other. Exercise 4: On the remaining worksheets, sketch the given objects. If you are given a 3D object, draw the same object in 2D. If you are given a 2D drawing, draw the object in 3D. </p><p>1</p>