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AutoCAD 2011 New Features
Illustration by Richard Downs

Filleting the edge between two surfaces


From:

AutoCAD 2011 New Features

with Jeff Bartels

Video: Filleting the edge between two surfaces

In this lesson, we're going to create the axle mount for our wagon. While constructing this part, we're going to learn how we can fillet the edge between two surfaces. On my screen, I've got some geometry. I'm going to orbit this a little bit, so you can see its context in 3D space. Thin line work represents the bottom of my part and I'd like to start out by revolving this polyline around this vertical axis. I'll launch the Revolve command. I'll select my geometry and hit Enter, and my axis of revolution will be defined by this endpoint and this one.
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  1. 2m 4s
    1. Welcome
      1m 28s
    2. Using the exercise files
      36s
  2. 14m 2s
    1. Adapting to the updated Drawing window
      4m 4s
    2. Introducing the Navigation bar
      5m 28s
    3. Accessing the web-based help system
      4m 30s
  3. 27m 36s
    1. Understanding the new visibility controls
      3m 5s
    2. Selecting objects that have similar properties
      3m 24s
    3. Creating new geometry based on existing objects
      2m 20s
    4. Making selections when entities overlap
      4m 11s
    5. Applying transparency to objects
      5m 44s
    6. Controlling text alignment within linetypes
      8m 52s
  4. 16m 38s
    1. Automating the creation of geometric constraints
      5m 35s
    2. Applying constraints to text rotation
      3m 8s
    3. Using the updated Parameters Manager
      7m 55s
  5. 38m 40s
    1. Streamlining hatch creation
      5m 56s
    2. Editing hatch objects dynamically
      4m 36s
    3. Editing polylines using multifunctional grips
      6m 14s
    4. Creating splines using fit points or control vertices
      10m 30s
    5. Editing splines using intuitive grip menus
      8m 17s
    6. Using the JOIN command to connect contiguous geometry
      3m 7s
  6. 18m 56s
    1. Exploring the updated 3D working environment
      6m 50s
    2. Simplifying the creation and editing of solid models
      5m 59s
    3. Introducing new tools to edit mesh models
      6m 7s
  7. 1h 25m
    1. Introducing surfaces
      2m 50s
    2. Understanding associative surfaces
      7m 9s
    3. Creating composite models using surfaces and solids
      9m 3s
    4. Producing a smooth blend between surfaces
      7m 20s
    5. Trimming and extending surfaces
      10m 55s
    6. Projecting geometry onto a surface
      5m 29s
    7. Filleting the edge between two surfaces
      6m 37s
    8. Creating offset and network surfaces
      8m 45s
    9. Pushing and pulling surfaces into freeform shapes
      10m 52s
    10. Analyzing surface continuity
      6m 15s
    11. Assembling the composite model
      10m 40s
  8. 22m 2s
    1. Introducing the new Materials Browser
      6m 10s
    2. Applying materials to an assembly
      6m 2s
    3. Customizing render materials
      5m 17s
    4. Creating a high-resolution image
      4m 33s
  9. 16s
    1. Goodbye
      16s

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AutoCAD 2011 New Features
3h 46m Intermediate Apr 21, 2010

Viewers: in countries Watching now:

In AutoCAD 2011 New Features, instructor Jeff Bartels highlights productivity and creativity enhancing additions to the AutoCAD toolset. This course covers improved functions for selecting and creating geometry, updated modification tools for hatches and polylines, simplified parametric constraint tools, and the new dynamic surface modeling techniques for creating complex shapes. Exercise files accompany the course.

Topics include:
  • Applying transparency
  • Maintaining text readability within linetypes
  • Automating geometric constraints
  • Streamlining hatch creation
  • Using control vertices to create splines
  • Exploring the updated 3D workspace
  • Creating surfaces using the Blend, Patch, or Network tools
  • Trimming and extending surfaces
  • Working with the new Materials Browser
  • Customizing render materials
Subjects:
CAD 2D Drawing 3D Drawing
Software:
AutoCAD
Author:
Jeff Bartels

Filleting the edge between two surfaces

In this lesson, we're going to create the axle mount for our wagon. While constructing this part, we're going to learn how we can fillet the edge between two surfaces. On my screen, I've got some geometry. I'm going to orbit this a little bit, so you can see its context in 3D space. Thin line work represents the bottom of my part and I'd like to start out by revolving this polyline around this vertical axis. I'll launch the Revolve command. I'll select my geometry and hit Enter, and my axis of revolution will be defined by this endpoint and this one.

Then I'll enter an angle of 360. Next, I'm going to launch the Extrude command and then I'll select my circle, and hit Enter, and I'll pull this up a height of 1.5. Now, let's tip this up a little bit, so we can see the bottom of the part. I'd like to turn some of this excess geometry off. Let's go to the Layer Properties Manager and I'm going to turn off this layer called surface_path and then we'll return to the drawing.

Let's create a fillet between this surface and this one. To do that, I'll move up to the Edit panel and launch the Fillet tool. I will then right-click, select Radius from the menu, and then I can enter my radius. I'm going to type 0.25 and hit Enter. I can then select my first surface and my second surface, and AutoCAD adds the fillet. Now, the command is not finished. I'm in a Preview mode right now. If I like what I see, I can hit Enter to accept it, or I can use these options to make changes.

If I select Radius, I can enter a new value, maybe 0.15 this time. Also, if I like, I can select Trim surfaces and I can determine if I want my surfaces trimmed when my fillet is added. In this case I do, so I'm going to leave this set to Yes. Finally, if we look over here, I've got a direct manipulation grip. If I click this, I can drag back and forth and dynamically set my fillet on screen. When I'm finished, I can hit the Enter key on my keyboard. Now this fillet is completely dynamic.

At any point in the future, if I want to change its geometry, I can select the surface, I can click this grip. This gives me access to the direct manipulation grip. I can then select this and drag back and forth to set a new fillet, or as long as my surface is selected, I can hit Ctrl+1 on my keyboard to bring up the Property Changer. Right here underneath the Geometry heading, I can find my fillet radius right here. I'm going to click in this field and set this to 0.15 and I'll hit Enter.

Finally, I'll close my Property Changer and I'll hit Escape to deselect my geometry. Now that the bottom of my part is finished, let's turn this over a little bit. I'm going to back up just slightly. We'll center this on screen and I'd like to turn on another layer. Once again, we'll go to the Layer Properties Manager. This time we'll turn on the surface_section layer. This geometry represents the top of my part. Now this polyline on the outside is a closed polyline. I'd like to use this polyline to define a flat surface.

So, I'm going to come up to the Create panel. I'll click the Planar Surface tool. I will then right-click and select Object and I'll select this polyline and hit Enter. Now, let's use the Trim command to knockout these holes. I'll launch Trim. I'll select my surface and hit Enter. I will then make a window selection around these outer circles. Then I'll select the inner circle and hit Enter. Finally, I'll click in all the places that I want to remove my surface.

When I'm finished, I'll hit Enter. Now, here's an interesting option related to Trim. If you've trimmed the surface using the Trim command, you can come back later and un-trim the surface. Watch this! If I come up to the Edit panel, I can click the Surface Untrim tool. I can then select the edge of a trimmed surface and hit Enter, and AutoCAD puts the surface right back. Now, I don't want to do this. So, I'm going to move up and click Undo to remove that surface again. I'm going to go back to the Layer Properties Manager, because I'm finished with the surface_section layer.

Let's turn this off and return to the drawing. I'm going to tip this up a little bit and at this point, I would like to create a blended surface from this edge to this inside edge. I'll launch the Blend command. I'll select this surface edge and hit Enter. Then I'll move up and select this surface edge and hit Enter. As far as my blend is concerned, I'm going to accept the defaults. If we go to CONtinuity, I can see these both default to G1. As far as Bulge magnitude, these are both defaulting to 0.5.

I'm going to hit Enter to accept both of these, and then I'll hit Enter to accept my blend. That looks pretty good! I'm going to go with top view. Let's turn on one more layer. This time we're going to turn on the surface_trim layer. I would like to use this geometry to trim my surfaces. Once again, I'll launch the Trim command and I'll select this surface and this one, Enter. I will then select the objects I'd like to use as cutting edges and hit Enter.

I will then select the parts of the surfaces that I'd like to trim. When I'm finished, I'll hit my Enter key. There we go. Let's tip this up and center it on screen. We'll go back to the Layer Properties Manager and I'll turn off the layers that I don't need to see. Let's turn off the surface_trim layer. We'll leave wagon_axle_mount turned on. Now that the part is essentially finished, let's save it so we can use it in our final assembly. I'm going to click the application menu and select Save As.

We'll save this inside the Exercise Files folder inside the finished_parts directory. I'm going to call this axleMount_finished and I'll click Save. This completes the geometry for the axle mount. In this lesson, we learned that it was possible to fillet the edge between two surfaces, and that the fillet is dynamic and can be easily modified if our design changes.

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