Introduction to AutoCAD 2011- P10: The purpose of writing this book is to produce a text suitable for students in Further and/or Higher Education who are required to learn how to use the computer-aided design (CAD) software package AutoCAD 2011. Students taking examinations based on CAD will find the contents of the book of great assistance. | 274 Introduction to AutoCAD 2011 axis R15 Fig. Example of constructing a 3D model - outline for solid of revolution CHAPTER 14 Fig. Orthographic drawing for the example of constructing a 3D model 3. Set the View Views Top view and with the Cylinder tool construct cylinders as follows In the centre of the solid - radius 50 and height 50. With the same centre - radius 40 and height 40. Subtract this cylinder from that of radius 50. At the correct centre - radius 10 and height 25. At the same centre - radius 5 and height 25. Subtract this cylinder from that of radius 10. 4. With the Array tool form a polar 6 times array of the last two cylinders based on the centre of the 3D model. 5. Set the View Views Front view. 6. With the Move tool move the array and the other two cylinders to their correct positions relative to the solid of revolution so far formed. 7. With the Union tool form a union of the array and other two solids. 8. Set the View Views Right view. 9. Construct a cylinder of radius 30 and height 25 and another of radius 25 and height 60 central to the lower part of the 3D solid so far formed. 10. Set the View Views Top view and with the Move tool move the two cylinders into their correct position. The modification of 3D models 275 Fig. Example of constructing a 3D model 11. With Union form a union between the radius 30 cylinder and the 3D model and with Subtract subtract the radius 25 cylinder from the 3D model. 12. Click Realistic in the View Visual Styles panel list. The result is given in Fig. . Notes This 3D model could equally as well have been constructed in a three or four viewports setting. Full Shading has been set on from the Render ribbon hence the line of shadows. The 3D Array tool First example - a Rectangular Array Fig. Fig. Example - 3D Array - the star pline Construct the star-shaped pline on a layer colour green Fig. and extrude it to a height of 20. Click on the 3D Array in the Home Modify panel Fig. .
