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AutoCAD 2013 Essentials: 03 Editing and Organizing Drawings
Illustration by Richard Downs

Adding to and removing from selections


From:

AutoCAD 2013 Essentials: 03 Editing and Organizing Drawings

with Jeff Bartels

Video: Adding to and removing from selections

When making a selection, there is always a chance you might select too many objects or not enough. Fortunately, AutoCAD allows us to make revisions to a selection. In this lesson we're going to learn how to add and remove objects from a selection set. On my screen I have some abstract geometry. Let's take a look at this pattern on the left first. Maybe I'd like to erase all of these yellow squares. To do that, I'll launch the Erase command and I'll start by creating a window selection to grab these squares on the top, I'll then create a crossing window to select the squares on the left side, and then I'll wrap up by creating another window selection to get these squares in the lower right.

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AutoCAD 2013 Essentials: 03 Editing and Organizing Drawings
2h 10m Beginner May 29, 2012

Viewers: in countries Watching now:

Properly managing a drawing is essential to being productive in AutoCAD. In this course, author Jeff Bartels concentrates on the Autodesk AutoCAD tools and features dedicated to organizing and editing geometry. The course covers making selections, creating and adjusting layers, identifying objects with hatch patterns, and scaling, exploding, and joining elements. It also includes lessons on creating fillets and chamfers, copying existing objects into rectangular or circular patterns, and accessing specialized tools that make measurements and calculations a lot easier.

Topics include:
  • Adding and removing from selections
  • Stretching elements
  • Creating mirrored copies
  • Leveraging grips
  • Editing hatch patterns
  • Using layers to organize a drawing
  • Changing layer states
  • Understanding the BYLAYER property
  • Taking measurements
  • Automating calculations with the Quick Calculator
  • Constructing a multi-view part
Subjects:
Modeling CAD 2D Drawing 3D Drawing
Software:
AutoCAD
Author:
Jeff Bartels

Adding to and removing from selections

When making a selection, there is always a chance you might select too many objects or not enough. Fortunately, AutoCAD allows us to make revisions to a selection. In this lesson we're going to learn how to add and remove objects from a selection set. On my screen I have some abstract geometry. Let's take a look at this pattern on the left first. Maybe I'd like to erase all of these yellow squares. To do that, I'll launch the Erase command and I'll start by creating a window selection to grab these squares on the top, I'll then create a crossing window to select the squares on the left side, and then I'll wrap up by creating another window selection to get these squares in the lower right.

The thing I want you to notice is that AutoCAD defaults to a multiple selection mode, as long as I keep selecting objects, those objects are added to the selection set. When I'm finished, I'll press the Enter key. Now I'd like to bring this geometry back. To do that I'll launch the Undo command, I could also use the keyboard shortcut Ctrl+Z. Let's try and make that same selection, except this time we'll do it in a different way. I'll re-launch the Erase command, and this time I'm going to create a window selection around everything. This obviously selected too much, at the Select objects prompt I'm going to hold my Shift key down and I'll reselect these 6 circles to remove them from the selection.

I'll then take my finger off the Shift key and I'll press Enter when I'm finished. So by holding the Shift key down you can remove objects from a selection set. Knowing what we know now, let's see how quickly we can select and erase the yellow squares in this pattern on the right. I'll launch the Erase command, I'm going to make a window and select everything, I'll then hold my Shift key and deselect the geometry in the middle. I'll take my finger off the Shift key and I'll reselect the square in the center, when I'm finished, I'll press Enter.

Now that we have better understanding of how we can add and remove from a selection, let's try and use these tools in a practical example. On my screen I have a drawing of a motorcycle sprocket. Now everything about this drawing is perfect with the exception of these teeth. All of this geometry needs to be erased. If I was trying to select this geometry using Windows that would be extremely tedious, let me press Escape. Instead I will select these teeth using the Add/Remove options. I'll start by launching the Erase command and I'll create a window around the entire sprocket, I will then hold down my Shift key and create a crossing window to deselect the geometry in the middle.

When I'm finished, I'll press Enter and only the teeth are erased. As you can see, AutoCAD makes it easy to refine a selection set. If you want to add more, just select more. If you want to remove objects, select them again while holding down the Shift key.

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