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Using existing geometry to set the current layer

From: AutoCAD 2013 Essentials: 03 Editing and Organizing Drawings

Video: Using existing geometry to set the current layer

Based on what we have seen so far, you may be thinking that we need to know a layer's name in order to make it current. This is not the case. In this lesson, we'll learn a shortcut that allows us to set the current layer by picking objects on screen. In this example, I have an unfinished mechanical part consisting of a top and front view. Take a look at these edges. These would show up in the top view as a solid line. In order to draw that geometry, I need to make sure the part layer is current. At this point, I don't know what name is being used for the part layer, and you know what, I don't have to know it.

Using existing geometry to set the current layer

Based on what we have seen so far, you may be thinking that we need to know a layer's name in order to make it current. This is not the case. In this lesson, we'll learn a shortcut that allows us to set the current layer by picking objects on screen. In this example, I have an unfinished mechanical part consisting of a top and front view. Take a look at these edges. These would show up in the top view as a solid line. In order to draw that geometry, I need to make sure the part layer is current. At this point, I don't know what name is being used for the part layer, and you know what, I don't have to know it.

If I come up to the Layers panel, I can click the Make Object's Layer Current button, select the layer I am interested in and that becomes the current layer. I will then launch the Line command and I'll create a line from this endpoint. I'll lock the Ortho and I'll drag this line out through the part. I'll click and I'll press Escape when I am finished. Then I'll create a copy of this line. We'll copy it from one edge to the other. Finally, I'll launch the Trim command and I'll grab the edge of the part. And I'll use this geometry to trim off my projections.

Now let's take a look at the edges underneath. These would show up in the top view as hidden lines. Once again, don't even need to know the layer name. I'll just click Make Object's Layer Current. I'll select the layer I am interested in, and then I can continue working on the part. I'll launch the Line command again. I'll create a line from this edge and drag it up through the part. I'll copy this projection over from one endpoint to the other. I will then launch the Trim command and use the edge of the part to trim off these projections.

In the event I wanted to add more dimensions to this drawing, I could come up and choose Make Object's Layer Current, grab a dimension and I am now ready to add additional annotations to this file. As you can see, it isn't always necessary to know a layer's name to make it current. Using the Make Object's Layer Current tool, we can choose the current layer as fast as we can click objects on screen.

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