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Creating shells

From: SketchUp Pro: Tools and Techniques

Video: Creating shells

Now there may be times when you'll have very complex surfaces that So if we wanted to connect these as a single surface, we could use Union.

Creating shells

Now there may be times when you'll have very complex surfaces that you need to connect together and for this, we can use shells. Here I have two simple surfaces that have intersections within the outer shell of the surface. In fact let me go ahead and go into my view. And I'm going to turn on facestyle x-rays so you can see what's inside of these. Now the first one here is a simple tongue and groove. So, you can see here that I've got that groove there and a little hole.

And this is basically from the first lesson we did. And so this has some detail inside of here. And then I have something that's a little bit more complex. And that's these two square tubes, so I have basically a square block with a square hole cut all the way through, and those two pieces are aligned in kind of a T shape. So if we wanted to connect these as a single surface, we could use Union. So if I selected this and shift selected that, and I did Tools, Solid Tools, Union, you can see that well it works.

It basically erases that tongue and groove and gives me a very nice solid surface. And for simple situations like this where everything lines up, this is great. But for something like this, we're not going to get that same result. So, let me go back into X-ray so you can see what's inside of this. And I'm going to zoom in a little bit here. You'll see that we've got these two square tubes and so we've got a lot of overlap between both the surfaces and the negative space of those.

So if I were to select this and go tools, solid tools, union, well, it would look great from the outside, in fact, let's go ahead and take a look at this, I'm going to turn off X-Ray. It would look fine from the outside, but if you actually go into it, and look at in X-Ray, you'll see that we've got this big square cavity in the middle, and that's just extra geometry that we don't need. And so the Shell tool will actually help with this.

So I'm going to go ahead and undo this. I'm going to go Edit > Undo Union. And so I've got this now back to where it was. And this time, I'm going to Shift + select both of these and instead of a Union, I'm going to do Outer Shell. And what this does is it just figures out what the outside shell is and deletes anything inside. And so what this does, is it basically combines these two surfaces. But, if there's a surface that's not on the outside it deletes it, and so we get rid of that square cavity on the inside.

And if we take a look at this, you'll see that it's a very nice surface. So this will save you a lot of excess geometry that you don't need by creating a shell, rather than a union. Basically you just want to use this on complex surfaces that might create cavities, but it will help to reduce the amount of geometry in the scene.

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This video is part of

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SketchUp Pro: Tools and Techniques

43 video lessons · 2943 viewers

George Maestri
Author

 
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  1. 2m 32s
    1. Welcome
      1m 29s
    2. Using the exercise files
      1m 3s
  2. 11m 15s
    1. Understanding Boolean operations
      4m 55s
    2. Working with Trim and Split
      3m 12s
    3. Creating shells
      3m 8s
  3. 15m 27s
    1. Creating advanced cameras
      5m 4s
    2. Manipulating cameras
      3m 1s
    3. Changing camera properties
      3m 16s
    4. Working with standard camera types
      4m 6s
  4. 17m 55s
    1. Creating terrains with contours
      5m 6s
    2. Creating terrains from scratch
      4m 35s
    3. Sculpting terrains with Smoove
      1m 59s
    4. Draping and stamping on terrains
      6m 15s
  5. 1h 10m
    1. Using the Component Attributes window
      5m 47s
    2. Working with custom attributes
      5m 28s
    3. Creating a dropdown list for size and pricing
      9m 4s
    4. Creating dynamic materials
      7m 19s
    5. Creating a dynamic picket fence: Introduction
      2m 1s
    6. Creating a dynamic picket fence: Assembling the components
      6m 26s
    7. Creating a dynamic picket fence: Making pickets multiply
      6m 41s
    8. Creating a dynamic picket fence: Making fence posts multiply
      4m 45s
    9. Creating a dynamic picket fence: Customizing attributes
      8m 8s
    10. Adding interactivity: Motion
      5m 34s
    11. Adding interactivity: Rotation
      6m 28s
    12. Adding interactivity: Changing colors
      3m 4s
  6. 49m 1s
    1. The LayOut interface
      3m 15s
    2. Drawing lines and arcs
      5m 33s
    3. Drawing rectangles
      2m 46s
    4. Drawing circles and polygons
      3m 28s
    5. Modifying line styles and color
      5m 3s
    6. Working with text and labels
      5m 11s
    7. Inserting SketchUp models
      5m 8s
    8. Manipulating SketchUp models
      3m 26s
    9. Working with dimensions
      3m 10s
    10. Arranging and grouping objects
      3m 36s
    11. Working with scrapbooks
      3m 3s
    12. Creating presentations
      3m 23s
    13. Exporting and printing
      1m 59s
  7. 9m 36s
    1. Introducing the Style Builder interface
      4m 52s
    2. Working with strokes
      4m 44s
  8. 4m 55s
    1. Installing plugins
      2m 40s
    2. Uninstalling plugins
      2m 15s
  9. 11s
    1. Goodbye
      11s

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