1. AutoCAD Tutorial Instructor: Dr. Karndee Prichanont Learning Objectives: - Refresh your memories in operating AutoCAD - Practice on basic operations

2. 2 Reference You can view all materials from www.siit.tu.ac.th/karndee/course/autocad.html www.siit.tu.ac.th/karndee/course/autocad.html Textbook reference Title: Computer-Aided Engineering Drawing Using AutoCAD; Author: Jensen, Helsel, and Voisinet; 1990 Title: Mastering AutoCAD Release 14; Author: Cheng; 1999

3. Starting AutoCAD Double click on AutoCAD icon AutoCAD environment  Drop-down menus  Standard toolbar  Specific toolbars  The graphic area  View tabs  The command area  The status area Command Entry  Command area  Menus  Icons

5. 5 File Operations New Save Open Tools / Display Image …

6. 6 Setting Up Drawing Environment Drawing units: Indicate metric unit in pop up window at start up  Format / Units … - Decimal units - Precision: 0.00 Limits  Format / Drawing Limits In command area, Lower left corner: 0,0 Upper right corner: 200,200 (example: 20x20 cm) Viewing  View / Zoom … or select icons (zoom all) or (zoom window)  View / Toolbar … : select frequent operations  View / Regenerate/ Redraw: to clear the clicked points

7. Basic Operations (1) Coordinate systems Absolute coordinates: Cartesian (X,Y) or Polar (R<A o ) Relative coordinates: Cartesian (@X,Y) or Polar (@R<A o ) User defined coordinate system: USC command - 3points option

8. 8 Basic Operations (2) 2D drawing: lines:  Select icon or type line click the starting point and ending point on the graphic area or type coordinates of these points Arcs:  Select icon or type arc select points or key in coordinates of the points according to requirements Other commands: polyline (command= pl), rectangle, circle, etc.

9. 9 Basic Operations (3) 3D Drawing  Select menu Draw – 3D objects – sphere/box/cylinder/.. Then key in parameters  Select icons – key in parameters

10. Basic Operations Snap modes( select endpoints, intersection) Select icons or click right hand side to obtain a float menu select suitable option Or go to Tools / Object Snap Settings … Common modifying operations Erase: type e then select object to erase Rotate: type rotate or select menu Modify / Rotate Others: offset, array, 2D object modifications: Select modify – select trim, break, extend, etc. 3D Object Modification select modify – select extrude, union, etc.

11. Practice 1

12. 12 Practice 2

13. 13 Submit the files Submit 2 practice files by 4 p.m. today to karndee@siit.tu.ac.th karndee@siit.tu.ac.th File name: yourname_1.dwg and yourname_2.dwg Ex: karndee_1.dwg and karndee_2.dwg State your name and student ID in the subject of email message