AutoCAD 2008 Essential Training
Illustration by Don Barnett

Mirror


From:

AutoCAD 2008 Essential Training

with Jeff Bartels

Video: Mirror

Whenever you are working with geometry that's symmetrical keep the Mirror command in the back of your mind. Sometimes making a mirrored copy can quite literally cut your work in half. I'm going to click my Open icon and we are going to look inside the Chapter 9 folder within the Exercise Files directory and I'm going to come down and we are going to open up drawing number 5. This is our Mirror Drawing. So let me select this and click Open. Now I have got an abstract example on my screen. I'm going to use this to show you how the Mirror command works.
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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

Mirror

Whenever you are working with geometry that's symmetrical keep the Mirror command in the back of your mind. Sometimes making a mirrored copy can quite literally cut your work in half. I'm going to click my Open icon and we are going to look inside the Chapter 9 folder within the Exercise Files directory and I'm going to come down and we are going to open up drawing number 5. This is our Mirror Drawing. So let me select this and click Open. Now I have got an abstract example on my screen. I'm going to use this to show you how the Mirror command works.

Now hopefully you can identify that this is one half of the wine glass. Now it's not the best looking wine glass in the world but this is just an abstract example. The thing I want to reinforce is that we don't have to draw both sides of the wine glass. Since it's symmetrical I have already created the left side. I'm going to use this left side to create the right side. We are going to do that by using the Mirror command. The Mirror command will create a mirrored or reflected copy of our geometry. Now well, does AutoCAD need to create a mirrored copy? Well, it needs an entity that we want to copy and it also needs a line segment that defines a mirror.

Now I happen to have both of those on my screen so let's launch the Mirror command. I'm going to come over to my Modify toolbar and I'm going to select the Mirror icon. Now AutoCAD is asking me to select objects. Which objects would I like to create a reflected copy from? I'm going to click on this entity. This is one continuous poly line. Let me right-click to finish the selection. Now AutoCAD is asking me to specify points on my mirror line.

Pretty much I just need to give two points to identify my line segment that I'm going to use for my mirror. So the first point of my mirror line I will grab the endpoint right up here. I happen to be using our running objects now so I will just click and then as I come down and grab the other endpoint notice I'm creating a mirrored copy. Let me come down and click my remaining endpoint and when I do the very last question AutoCAD asks me do you want to erase the source objects. I don't have to keep the original if I don't want to. In this case I'm going to select No.

I'm just going to hit Enter because I want to keep my original geometry. When I hit Enter I have created a mirrored copy of my wine glass. Now that we get the idea of how the Mirror command works let's try and use the Mirror command in a practical example. I'm going to zoom back just a little bit. We will pen over. Let me center my entertainment center on screen to tweak this back one more time. Let's assume I'm a furniture designer and I'm working at an entertainment center.

Now I have already finished the raised panel door on the left side and I don't want to go to the hassle of drafting another door on the right side since this geometry is symmetrical I'm going to create a mirrored copy of my left door to create my right door. Let's try that. Before I launch the Mirror command I'm going to create a line segment that represents my mirror line. So I'm going to come over and launch the Line command. AutoCAD says Specify first point.

I'm going to use a midpoint Object Snap. So I'm going to come over and click my midpoint Object Snap and then I will click at the top of my entertainment center. Since I'm creating a mirror line I want to bring this guy straight down. I'm going to use another midpoint Object Snap and I will grab midpoint and I will grab the bottom of my entertainment center. I will just click and when I'm all done with the command I'm going to hit Escape. This is the line I'm going to use to create my mirrored copy.

Alright let's launch the Mirror command. I'm going to come over to my Modify toolbar and select Mirror. AutoCAD asks me to select objects. Well I'm going to start clicking on these. Well, it seems like there are bunch of disjointed pieces so let's do it with a window. Since AutoCAD is saying select objects I'm going to click just above my panel and I'm going to pull to the right and create a nice window selection. Let me click to finish the window and then I will right click to let AutoCAD know I'm done selecting objects.

Now AutoCAD is asking me to specify the points on my mirror line. Perfect I will grab the endpoint right here. Click and then I will come up and I will grab the endpoint right here. Notice I don't have to be all the way on the endpoint to select it. Let me left-click and do I want to erase the source objects? No, I'm going to hit Enter to finish the command. Now here is the dirty little secret. I don't have to have a physical line to do my mirror. Let me erase this guy. I want to use the Erase command. I will come over and click Erase and then I'm going to click this line and then right-click to finish the selection.

Let me zoom in on my draw handle. I would like to create a mirrored copy of my handle on the left. I would like to produce a copy of this guy on the right. Let's do that by using the Mirror command but this time we are not going to create a physical line. I'm going to come over and launch the Mirror command. Let me click the Mirror icon. AutoCAD asks me to select objects. I will select this one and then right-click. Alright AutoCAD is asking me to specify the first point of my mirror line.

I'm just going to use an Object Snap. Let's use midpoint again. I'm going to come up and grab my midpoint Objects Snap and then I will come down and grab the midpoint of this line and then let's grab the other point. I'm going to select the midpoint again and I want to come down and grab the midpoint of the bottom. I didn't need an ending, I had the Object Snaps. Erase source objects. Now I will go ahead and hit Enter and I have just mirrored my drawer handles. Let's do one more.

I would like these handles to be on the upper drawer. I'm going to launch the Mirror command one more time. Let's get it from the right-click. I want to right-click and select repeat mirror, select objects. Let's click and make a window around both of these handles. I will click to finish the window and then I have to right-click to finish the selection. Now I can specify my points on my mirror line. I have a running Object Snaps set for endpoint so I'm going to move up and click the endpoint here and then I'm going to move over and click the endpoint here.

When I'm done, do I want to erase source objects? No, I will go ahead and hit Enter and the drawers are finished. Remember that every time you are working with symmetrical geometry you have an opportunity to use the Mirror command and if you use it properly you will be making AutoCAD do half of your work.

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