AutoCAD 2008 Essential Training
Illustration by Don Barnett

Layers


From:

AutoCAD 2008 Essential Training

with Jeff Bartels

Video: Layers

Layers are used in AutoCAD to organize our drawings. By placing our entities on different layers, we have the ability to turn line work on and off, as well as control colors, linetypes, and lineweights. Let's talk a little bit about layers. I'm going to open a drawing, I'm going to come up and click my Open icon and inside the Select File dialog, we are going to look inside chapter 10 within our Exercise Files directory and we are going to open up the number one drawing, the Retro Controller. So, I will highlight that guy and click open to bring him up on my screen. Now, this is a mechanical example.
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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

Layers

Layers are used in AutoCAD to organize our drawings. By placing our entities on different layers, we have the ability to turn line work on and off, as well as control colors, linetypes, and lineweights. Let's talk a little bit about layers. I'm going to open a drawing, I'm going to come up and click my Open icon and inside the Select File dialog, we are going to look inside chapter 10 within our Exercise Files directory and we are going to open up the number one drawing, the Retro Controller. So, I will highlight that guy and click open to bring him up on my screen. Now, this is a mechanical example.

This happens to be a drawing of a 1980s video game controller. Let's pretend for just a second that I created this drawing using a traditional pencil and paper and maybe I gave the paper to you and you looked at it and said, this is nice but it's awfully busy, can you give me a copy of this drawing without the dimensions? Well, I can't since it's all on one sheet of paper, unless I get a bottle of whiteout or an eraser, I have no way of giving you a copy without the dimensions. Let's look at it a different way. What if I drafted the controller on a piece of paper and then I laid a clear sheet of plastic on top of my paper and I drafted the dimensions on the plastic.

Now, when I give you the drawing, if you would like to see it without the dimensions, all we have to do is peel the plastic bag and the dimensions are gone. That is exactly how layers work. Each layer represents a virtual sheet of plastic. We use layers in AutoCAD to organize our drawing. For instance, we'll put dimensions on a layer, we'll put our centerlines on the layer. We may put our text and callouts on our layer. The more logical layers that we use, the more control we have over our drawing. For instance, if I wanted to plot this drawing without dimensions, I could just turn my dimensions off because they are on their own layer.

If I wanted to plot this drawing without center lines or callouts or a title block, as long as I have everything organized by layer, I have control when I plot. Let's make some adjustments to the layers in this drawing. Let's say I would like to turn off my dimensions. If I come up to my Layers toolbar, I'm going to click the dropdown right here, this is my Layer Control and when I do, I get a pop-up menu, that shows me the name of every layer in this drawing. I'm going to come down to my Dimensions layer and I am going to move over and click this little light bulb, this guy will turn the layer off and then I will click outside in Model space to clear the menu.

Now, my dimensions are removed from screen. Having my dimensions on their own layer, gives me the ability to plot this drawing without the dimensions if I wish. Let's turn off our center lines. I'm going to go back to my Layer Control and click, I'm going to come down to my centerlines layer and I will move over and click the light bulb and we will turn those off. Once again I'm going to click out in Model space to clear the menu. Those guys are now gone. Not only do layers give us more control when we plot, they also give us more control when we draft on screen, because I'm sure you will agree that what we see now is a lot less cluttered than what we started with.

If we use a logical organization of layers, I can turn off the components that I don't happen to be working on at that time and reduce my geometry to just what I need to do my job. Let's turn those layers back on. I'm going to go back up to my Layer Control and click the dropdown. I'm then going to move down and click the light bulb to turn on my centerline's layer. I will click the light bulb to turn on my dimensions layer and then I click outside in Model space to clear the menu. When it comes right down to it, layers give us more control over our drawing.

If we use a system of logically named layers to organize line work, we give ourselves more options when plotting or viewing geometry on screen.

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