AutoCAD 2008 Essential Training
Illustration by Don Barnett

ORTHO and POLAR modes


From:

AutoCAD 2008 Essential Training

with Jeff Bartels

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Video: ORTHO and POLAR modes

The purpose of drafting is to create and reproduce accurate geometry. In this session we are going to use our Line command to draft some line work that has geometric value. I am going to come up to my Open icon and we will click and when the Select File dialog comes up I am going to select the number 2 drawing within the Chapter 3 Drawing Fundamentals folder. And we will click Open to bring him up on screen. If I look to the upper right hand corner we can see I have got some geometry that we are going to replicate using the Line command. Now before we get started I want to verify that our mode settings are similar.
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  1. 3m 27s
    1. Welcome
      1m 6s
    2. Introduction to AutoCAD
      1m 29s
    3. Using the exercise files
      52s
  2. 23m 16s
    1. Modelspace
      2m 21s
    2. Toolbars
      3m 24s
    3. Pulldowns
      3m 36s
    4. AutoCAD's command line
      1m 46s
    5. Dockable palettes
      3m 23s
    6. The Status bar
      2m 59s
    7. Saving your workspace
      2m 12s
    8. Essential settings
      3m 35s
  3. 19m 8s
    1. Opening an AutoCAD drawing
      3m 1s
    2. Mouse functions
      2m 2s
    3. Zooming, panning, and regen
      5m 11s
    4. The multiple-document environment
      3m 24s
    5. Saving your work
      2m 34s
    6. Using templates
      2m 56s
  4. 16m 37s
    1. The Line command
      3m 17s
    2. ORTHO and POLAR modes
      5m 45s
    3. The Circle command
      3m 27s
    4. The Heads-Up display
      4m 8s
  5. 15m 51s
    1. Defining units of measure
      6m 13s
    2. Drafting with architectural units
      5m 1s
    3. Drafting with metric units
      4m 37s
  6. 20m 52s
    1. Cartesian coordinates
      5m 50s
    2. Object snaps
      10m 27s
    3. Automating object snaps
      4m 35s
  7. 23m 33s
    1. Rectangle
      4m 22s
    2. Ellipse
      6m 0s
    3. Hatch
      8m 34s
    4. Polygon
      4m 37s
  8. 23m 28s
    1. Move and Copy
      6m 45s
    2. Rotate
      5m 6s
    3. Offset
      6m 1s
    4. Erase
      2m 6s
    5. Undo and Redo
      3m 30s
  9. 12m 38s
    1. Windows and crossing windows
      4m 49s
    2. Removing from selections
      3m 44s
    3. Using key-ins
      4m 5s
  10. 1h 4m
    1. Trim and Extend
      6m 55s
    2. Fillet
      5m 3s
    3. Chamfer
      6m 36s
    4. Array
      8m 2s
    5. Mirror
      6m 54s
    6. Stretch
      5m 51s
    7. Scale
      5m 19s
    8. Grips
      7m 37s
    9. Explode
      4m 17s
    10. Polyline edit
      7m 48s
  11. 26m 8s
    1. Layers
      3m 32s
    2. The Layer Properties Manager
      9m 8s
    3. Layer control
      4m 30s
    4. The ByLayer property
      5m 27s
    5. The Layer Previous command
      3m 31s
  12. 43m 16s
    1. Single-line text
      3m 47s
    2. Text justification
      7m 3s
    3. Text styles
      7m 31s
    4. Multi-line text
      6m 30s
    5. Editing
      3m 24s
    6. Bulleted and numbered lists
      4m 7s
    7. Symbols
      6m 19s
    8. Spell-checking
      4m 35s
  13. 29m 0s
    1. Creating dimensions
      8m 36s
    2. Dimension styles
      6m 39s
    3. Callouts
      6m 42s
    4. Tweaking dimensions
      7m 3s
  14. 14m 53s
    1. The Distance command
      4m 17s
    2. The Property Changer
      6m 31s
    3. The Quick Calculator
      4m 5s
  15. 25m 10s
    1. Creating and inserting blocks
      10m 16s
    2. Using blocks
      5m 47s
    3. Modifying blocks
      4m 8s
    4. Building your library
      4m 59s
  16. 48m 45s
    1. Quick plots
      6m 42s
    2. Selecting a pen table
      5m 37s
    3. Layouts pt. 1: Choosing paper
      3m 23s
    4. Layouts pt. 2: Inserting a title block
      3m 13s
    5. Layouts pt. 3: Cutting a viewport
      6m 18s
    6. Layouts pt. 4: Reusing layouts
      4m 16s
    7. Scale factors
      4m 0s
    8. Sizing modelspace text
      7m 17s
    9. Sizing modelspace dimensions
      4m 48s
    10. Sizing linetypes
      3m 11s
  17. 10m 1s
    1. Drawing compatibility
      3m 5s
    2. E-transmitting
      3m 12s
    3. Saving to the Design Web format
      3m 44s
  18. 20s
    1. Goodbye
      20s

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Watch the Online Video Course AutoCAD 2008 Essential Training
6h 58m Beginner May 13, 2008

Viewers: in countries Watching now:

AutoCAD is a computer-aided drafting and design program that is the industry standard for a wide variety of 2D and 3D work. AutoCAD 2008 features several improvements over previous versions, but the core functionality and workflows have remained consistent for years. Users who have any of the more recent editions of the software will find AutoCAD 2008 Essential Training to be a valuable resource. Instructor Jeff Bartels has taught and used AutoCAD for a decade, and in this course he focuses on the difficult to master concepts that matter most to professional AutoCAD users. Exercise files accompany the course.

Topics include:
  • Opening, viewing, saving, and sharing drawings
  • Customizing the workspace
  • Mastering drawing fundamentals and specialized commands
  • Defining units of measure and controlling accuracy
  • Making primary modifications and major changes to a drawing
  • Organizing layers and reusable content
  • Annotating and dimensioning
  • Plotting with layouts
  • Sizing linetypes, modelspace text, and dimensions for a plot
Subject:
CAD
Software:
AutoCAD
Author:
Jeff Bartels

ORTHO and POLAR modes

The purpose of drafting is to create and reproduce accurate geometry. In this session we are going to use our Line command to draft some line work that has geometric value. I am going to come up to my Open icon and we will click and when the Select File dialog comes up I am going to select the number 2 drawing within the Chapter 3 Drawing Fundamentals folder. And we will click Open to bring him up on screen. If I look to the upper right hand corner we can see I have got some geometry that we are going to replicate using the Line command. Now before we get started I want to verify that our mode settings are similar.

Let's take a look at the bottom of the screen and notice that all of my mode settings are currently turned off or in the Up position with the exception of Model. Let's launch the Line command. I am going to come over to my Draw toolbar and I am going to click on the Line icon then I am going to pick a point on screen and as I pull away, once again I get the rubber band effect. Let's try and create some line work that's accurate. I am going to do that by locking my Ortho mode. So while I am in this command I am going to come down and I am going to click on my Ortho button to turn Ortho on.

And notice as I move my cursor AutoCAD is locking to 90 degree angles. This is kind of like drafting with a T square or a triangle. Now that we are locked to 90-degree increments, let's try and create a quick square. So I am going to pull to the right, I am going to type in 10 and hit Enter. We can pulldown and type 10 and hit Enter, pulls the left, type 10 and hit Enter. And then lastly I am not going to cheat, I am not going to close up. I am just going to pull up and type 10 and hit Enter. When the square is done, if I want to get out of the Line command I am going to right-click and select Enter.

Now that we understand how the Ortho mode works let's recreate this geometry we see in the corner of the sandbox. I am going to relaunch my Line command so I am going to come over and click the Line icon, we will pick a point on screen and we will work our way around this geometry going clockwise. So when you pull up, I am going to type 9. We pull to the right and type 15, pull down and type 7, we will pull to the left and type 8. Don't forget at any point if you make a mistake, you can always use the sub-option Undo to backup.

So if I'm pulling down and I accidentally type in 7, oops! I didn't mean to do that, I can always right-click select Undo to backup one segment. Let's pulldown and type 2 and then I am going to finish this shape up. I am just going to right-click and select Close. Now the Ortho mode is nice but on occasion 90-degree increments aren't specific enough. Sometimes I would like to create my geometry and have my angles locked to smaller increments so let me pan this drawing over to the side. I happen to have a second sandbox.

I have another drawing in the upper right hand corner. In this sandbox we are to learn how to use the Polar mode. Let me come over and launch my Line command. I am going to come over to the Draw toolbar and click on line, we will pick a point on screen and we can see that the Ortho happens to be turned on. Let's use the Polar mode. I am going to come down and click on my Polar button. This will turn on my Polar mode otherwise known a Polar Tracking. When I click this button, watch the Ortho button. As soon as I turn Polar On, Ortho turns Off. Ortho and Polar are like an either/or proposition.

I can have one running or the other. Now that Polar is On and I am in the Line command notice if I pull to the right I get a ray. This ray shows me that I am locking on that particular angle. If I pull down, I can see that I am locking to a 90-degree angle. Going down to the left and up. So right now Polar essentially is working the exact same way as Ortho. Well the nice thing about Polar is that I can add angles if I wish. Let's take and add some 45-degree angles to our Polar Tracking.

If I come down over the Polar button and right-click, I can select Settings and from here in the Increment angle I can see the Polar happens to be set to 90 degrees. If I click the dropdown, I can set additional angular snaps I would like to have. Let's set it at 45 and click OK. I am still in the Line command. Notice not always I move my cursor, AutoCAD is snapping to 45-degree increments. Let's try and draw a square and we will try and draw it rotated to a 45-degree angle. So I am going to pull to the upper right and I am going to type 10 and hit Enter.

Let's pulldown in the lower right hand corner. We will pull in a southeast direction and type 10. That's pulling the southwest and type 10 and then finally I am going to close it. I am just going to right-click and select Close. So the Polar Tracking will allow us to snap to additional angles that are more specific than 90 degrees. Now that we know how to use Polar, let's try and recreate this geometry we see in the upper right. I am going to launch my Line command, specify first point. I will pick a point on screen and I am just going to pull up and type 10 and we'll pull my cursor to the right and type 5. Let's pull on the 45 degree angle and type 3.

If you're an architect, this is how you can create bay windows. Let me type 3, we will pull down and type 3, we will pull over and type 5. Polar and Ortho allow us to draft very quickly. Once again be careful make sure that when you type in your distance when you are using your Direct Distance Entry. Make sure that the ray is visible on screen. If I happen to be off a little bit and type 10, I did draw a line segment 10 units long but it's not the correct angle. Let me right-click and Undo to backup one segment.

Let's pulldown and type 10 and then lastly I am going to right-click and select Close. As you can see when combining the Line command with the Ortho and Polar modes we can quickly create accurate geometry on our screen.

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