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Boolean tools

From: Blender 2.6 Essential Training

Video: Boolean tools

Another nice modifier is the Boolean Modifier. Now, this is familiar to anybody who has used CAD or solid modeling, and what it does is it allows you to take one object and use it to cut away or add to another object. So let's take a look at how to use this. I've got two objects here; I've got a Cylinder and a Cube. So I am going to go ahead and select the Cylinder and move it down so that it overlaps the Cube. In fact, we should probably take a look at this in Wireframe.

Boolean tools

Another nice modifier is the Boolean Modifier. Now, this is familiar to anybody who has used CAD or solid modeling, and what it does is it allows you to take one object and use it to cut away or add to another object. So let's take a look at how to use this. I've got two objects here; I've got a Cylinder and a Cube. So I am going to go ahead and select the Cylinder and move it down so that it overlaps the Cube. In fact, we should probably take a look at this in Wireframe.

I just want this to make sure that it's intersecting that Cube. Now, I'm going to select the Cube, itself leaving the Cylinder unselected and we are going to go over to the Modifiers Panel of that Cube and add a Modifier, and in this case we are going to add the Boolean Modifier. Now, at this point it's not doing anything, and that's because we need to select the object to be the effecter. In other words, the object is going to cut or add to the Cube.

If we click here, we can select Cylinder and now something happens. In fact, it's probably better to take a look at this in Wireframe, because the highlighted orange is really the effect of the Boolean operation. So we have three options; Intersection, which is the area of the Cube that intersects with that Cylinder; Union, in other words, the Cube plus the Cylinder. You can see how the orange Wireframe completely encloses the Cylinder.

And then we also have Difference, and what that does is it creates a little hole where the Cylinder intersects with the Cube. Now, this is actually live, so if I were to move the Cube, you can see that the Intersection spot actually moves with that Cube. So once we have a Boolean and we like it, probably the easiest thing to do is to hit Apply. Now, once I hit Apply, that freezes the effect and now we can move the Cube off of the Cylinder.

And if I go into a Solid Mode, you can see what happened. So Booleans are really good for creating mechanical objects, hard surface objects. Typically you don't use Booleans for things that are going deform, like characters and those sorts of thing. And the reason is because when you create a Boolean, you see how we get all of this additional geometry, and so that makes it very hard to deform the object. Now, this may look clean and render very nicely, but if we start to move vertices around, the model will break up.

So remember, Boolean is an active operation until you hit Apply and also use it on solid objects. Deformations and Booleans don't agree.

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Blender 2.6 Essential Training

94 video lessons · 23034 viewers

George Maestri
Author

 
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  1. 5m 50s
    1. Welcome
      1m 22s
    2. Using the exercise files
      28s
    3. Downloading Blender
      34s
    4. Notes on Blender 2.7 NEW
      2m 8s
    5. Using Blender on a Mac
      42s
    6. Using Blender on a laptop
      36s
  2. 30m 32s
    1. Overview of the Blender interface
      6m 6s
    2. Understanding 3D view windows
      5m 23s
    3. Navigating in 3D space
      6m 35s
    4. Configuring user preferences
      6m 24s
    5. Creating custom layouts
      6m 4s
  3. 32m 29s
    1. Selecting objects
      6m 12s
    2. Moving objects
      4m 35s
    3. Rotating objects
      2m 48s
    4. Scaling objects
      2m 16s
    5. Understanding transform orientation
      3m 53s
    6. Changing an object's origin
      5m 27s
    7. Selecting pivot points
      3m 22s
    8. Using Snap to move objects precisely
      3m 56s
  4. 49m 18s
    1. Creating mesh primitives
      6m 36s
    2. Selecting vertices, edges, and faces
      4m 48s
    3. Editing mesh objects
      7m 39s
    4. Proportional editing
      3m 52s
    5. Sculpt mode (Updated for 2.7) NEW
      5m 3s
    6. Sculpt mode
      4m 45s
    7. Working with edges and edge loops
      3m 42s
    8. Extrusions
      5m 18s
    9. Smooth shading objects
      2m 23s
    10. Subdividing meshes
      5m 12s
  5. 50m 31s
    1. Working with modifiers
      5m 52s
    2. Working with subdivision surfaces
      3m 48s
    3. Creating a simple creature
      7m 54s
    4. Symmetrical modeling with the Mirror modifier
      8m 21s
    5. Joining mesh objects
      3m 37s
    6. Stitching vertices
      4m 52s
    7. Finalizing a simple creature
      4m 48s
    8. Creating text
      3m 29s
    9. Boolean tools
      2m 59s
    10. Vertex groups
      4m 51s
  6. 22m 36s
    1. Using the Outliner
      8m 22s
    2. Using layers
      4m 30s
    3. Creating groups
      2m 48s
    4. Working with scenes
      4m 2s
    5. Creating hierarchies
      2m 54s
  7. 54m 26s
    1. Assigning materials to objects
      8m 4s
    2. Diffuse shaders
      6m 47s
    3. Working with specularity
      5m 56s
    4. Using the Ramp Shader options
      9m 45s
    5. Additional shading options
      2m 37s
    6. Creating reflections
      8m 29s
    7. Adding transparency and refractions
      6m 49s
    8. Subsurface scattering
      5m 59s
  8. 1h 6m
    1. Adding a simple texture
      6m 11s
    2. Using bitmaps
      6m 53s
    3. Mapping textures in the UV Editor (Updated for 2.7) NEW
      7m 43s
    4. Mapping textures in the UV Editor
      8m 28s
    5. Using UV projections
      5m 56s
    6. UV mapping a character (Updated for 2.7) NEW
      6m 35s
    7. UV mapping a character
      6m 11s
    8. Fine-tuning UV mapping
      6m 7s
    9. Creating Bump and Normal maps
      3m 15s
    10. Displacement mapping
      3m 48s
    11. Using the Node Editor
      4m 59s
  9. 53m 9s
    1. Adding lamps to a scene
      8m 44s
    2. Fine-tuning ray-trace shadows
      4m 32s
    3. Using spot lamps
      4m 20s
    4. Fine-tuning buffer shadows
      6m 19s
    5. Using Hemi lamps
      2m 32s
    6. Working with Area lamps
      5m 17s
    7. Creating sky and ambient light
      4m 49s
    8. Adding background images
      3m 19s
    9. Creating sunlight
      6m 6s
    10. Ambient occlusion
      7m 11s
  10. 30m 8s
    1. Working with cameras
      4m 47s
    2. Creating camera targets with constraints
      3m 43s
    3. Render properties
      5m 7s
    4. Rendering animation
      5m 13s
    5. Adding motion blur
      4m 10s
    6. Creating depth of field
      7m 8s
  11. 32m 30s
    1. Understanding the Timeline
      4m 3s
    2. Animating objects
      6m 26s
    3. Animating properties
      4m 0s
    4. Editing animation in the Graph Editor
      8m 36s
    5. Using the Dope Sheet
      4m 53s
    6. Path animation
      4m 32s
  12. 39m 59s
    1. Facial animation using shape keys
      4m 40s
    2. Understanding armatures
      6m 2s
    3. Fitting an armature to a creature
      7m 23s
    4. Deforming a character with an armature
      3m 49s
    5. Setting up inverse kinematics
      3m 53s
    6. Controlling the hips and body
      2m 1s
    7. Animating in Pose mode
      2m 47s
    8. Creating a test animation
      9m 24s
  13. 15s
    1. Goodbye
      15s

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