Creating 2D projections from a 3D model
Video: Creating 2D projections from a 3D modelIn this lesson, you will generate 2D top, front, and side view drawings of a 3D mechanical part. In addition, you will project an isometric drawing as well. Open the MechanicalPart1 project file. This is a model of a three-dimensional solid object. We're tasked with creating a series of 2D drawings that represent this three-dimensional form. Click on Layout1. A viewport is automatically created when you first go to the Layout.
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If you're comfortable with 2D drawing in AutoCAD 2013 and ready to start creating and designing three-dimensional models, this workshop from AutoCAD expert and author Scott Onstott is for you. Learn about 3D navigation and wireframing; surface, solid, and mesh modeling techniques; designing and assigning materials; placing natural and artificial lights; and configuring both direct and global illumination rendering parameters to create photorealistic renderings. With the 3D techniques from this course, you can prepare to bring your designs one step closer to reality.
- 3D views, perspectives, and tools in AutoCAD
- Controlling the visual style
- Working with tiled viewports
- Composing perspective views
- Drawing in 3D
- Modeling an Ionic column
- Documenting 3D models
- Creating dynamic slideshows, animations, and renderings
Creating 2D projections from a 3D model
In this lesson, you will generate 2D top, front, and side view drawings of a 3D mechanical part. In addition, you will project an isometric drawing as well. Open the MechanicalPart1 project file. This is a model of a three-dimensional solid object. We're tasked with creating a series of 2D drawings that represent this three-dimensional form. Click on Layout1. A viewport is automatically created when you first go to the Layout.
We actually don't need this viewport. Select it, and press the Delete key. Let's change the paper size. Right-click on Layout 1 and choose Page Setup Manager. Click Modify. Change the paper size to 17 by 11 inches, so that it's oriented in Landscape Orientation here. Select monochrome as the plot style table and check Display plot styles. Click OK.
And Close. So we have a larger piece of paper, but there's nothing on it yet. Let's go ahead and open the Layer Properties Manager and create a new layer called Titleblock. Give that layer the color, white. Make it Current. Change its Lineweight to something thicker, perhaps 0.7 millimeters.
Go ahead and draw a rectangle. Inside the dash lines, which indicate the limits of the plot device. Type x, Enter for EXPLODE, and explode the rectangle, turning it into lines. OFFSET, and then type 3, Enter for 3 inches. And offset this line to the left, this line down, and this line up. Enter. TR for TRIM, press Enter again and trim away those lines. So you have a titleblock.
Now it's time to project 2D drawings from the 3D model. Go to the Layout tab and click the Base tool here on the Create View panel. You have two choices. You can create this base 2D drawing either from the model in model Space in AutoCAD or from a 3D model in Autodesk Inventor. Select the first option. And then, click a point down here to locate the base projection. Press Enter, move the cursor up and it automatically will create a top view for you.
Click there. Move the cursor to the right relative to the base drawing and you'll get a side view. Click a point to locate that drawing. Now if you move the cursor around, you'll see that different views are suggested depending on the relationship to the base drawing. Click up here to create an isometric projection. And then press Enter. Zoom in.
And take a closer look. Let's zoom in to the isometric. Make sure that Show Lineweight is on, so you can see the representation of the line thickness here. This is a bit thinner than this line for example. Go to the Layer Properties Manager. Notice that we have four new layers that are prefaced with the letters MD, this stands for model documentation.
We have a set of hidden layers and a set visible layers. The hidden layers are both regular and narrow. And you can see that the lineweights have been pre-assigned for you. Toggle off Narrow and this little line disappeared. Toggle off Hidden and all those dashed lines disappear. I think I'll leave MD_Hidden on. But I'll leave MD_Hidden Narrow off.
Also, the visible lines are on a separate layer. We'll need to keep that on. And MD_Visible Narrow refers to some of these lines down here that show the faceting on this curved object. And turn that on and off. Think it looks better with that off. So in this lesson, you learned how to create a base projection of a 3D model in a layout. And then, automatically create orthographic and isometric projections from it.
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