Beginning AutoCAD 2018. Cheryl R. Shrock

you attempt to re-open the drawing the Drawing Recovery Manager will display a list of all drawing files that were open at the time of a program or system failure. You can preview and open each .dwg or .bak file to choose which one should be saved as the primary file.

Exiting AutoCAD

      To safely exit AutoCAD follow the instructions below.

      1. Save all open drawings.

      2. Start the Exit procedure using one of the following.

      If any changes have been made to the drawing since the last Save As, the warning box shown below will appear asking if you want to Save the changes?

      Select Yes, No or Cancel.

Exercise 2A

      Instructions:

      1. Start a New file using either the inch-helper.dwt or the metric-helper.dwt

      2. Draw the objects below using:

      A. Line command

      B. Ortho (F) on when drawing Horizontal and Vertical lines.

      C. Ortho (F) off when drawing lines on an Angle.

      D. Turn Increment Snap (F9) on

      E. Turn Osnap (F3) off

      F. Turn Grid (F7) on

      G. Use the Close option

      3. Save the drawing as: Ex-2A

      Exercise 2B

      Instructions:

      1. Open Ex-2A, if not already open.

      2. Erase the missing Lines as shown.

      A. Turn Osnap (F3) off (It will be easier to move the cursor accurately).

      3. Save the drawing as: Ex-2B

      Exercise 2C

      Instructions:

      1. Start a New file using either the inch-helper.dwt or the metric-helper.dwt

      2. Draw the objects below using:

      A. Line command

      B. Ortho (F) on when drawing Horizontal and Vertical lines.

      C. Ortho (F) off when drawing lines on an Angle.

      D. Turn Increment Snap (F9) on

      E. Turn Osnap (F3) off

      F. Turn Grid (F7) on

      G. Use the Shift Key to toggle Ortho on and off.

      3. Save the drawing as: Ex-2C

      Exercise 2D

      Instructions:

      1. Start a New file using either the inch-helper.dwt or the metric-helper.dwt

      2. Draw the objects below using:

      A. Line command

      B. Ortho (F) on when drawing Horizontal and Vertical lines.

      C. Ortho (F) off when drawing lines on an Angle.

      D. Turn Increment Snap (F9) on

      E. Turn Osnap (F3) off

      F. Turn Grid (F7) on

      G. Use the Shift Key to toggle Ortho on and off.

      3. Save the drawing as: Ex-2D

       LEARNING OBJECTIVES

       After completing this lesson, you will be able to:

      1. Create a Circle using 6 different methods.

      2. Create Rectangles with Chamfers, Fillets, Width and Rotation.

      3. Set Grids and Increment Snap.

      4. Draw using Layers.

      5. Control Layers.

      6. Create Layers.

LESSON 3

Circle

      There are options to create a circle.

      The default option is “Center, radius”. (Probably because that is the most common method of creating a circle.)

      We will try the “Center, radius” option first.

      1. Start the Circle command by using one of the following:

      Ribbon = Home Tab / Draw Panel /

       or

       Keyboard = C <enter>

      2. The following will appear on the command line: Command: _circle Specify center point for circle or [3P/2P/Ttr (tan tan radius)]:

      3. Locate the center point for the circle by moving the cursor to the desired location in the drawing area (P1) and press the left mouse button.

      4. Now move the cursor away from the center point and you should see a circle forming.

      5. When the circle is the size desired (P2), press the left mouse button, or type the radius and then press <enter>.

      Note: To use one of the other methods described below, first select the Circle command, then select one of the other Circle options.

      Center, Radius: (Default option)

      1. Specify the center (P1) location.

      2. Specify the Radius (P2).