Graphics Programs Reference
In-Depth Information
CHAPtER 7
Combining objects
into Blocks
Computer drafting derives much of its efficiency from a feature that makes
it possible to combine a collection of objects into an entity that behaves as a
single object. AutoCAD calls these grouped objects a block . The AutoCAD tools
that work specifically with blocks make it possible to do the following:
Create a block in your current drawing
Repeatedly place copies of a block in precise locations in your drawing
Share blocks between drawings
.dwg files either from blocks or from portions of your cur-
rent drawing
Create
Store blocks on a palette for easy reuse in any drawing
In general, objects best suited to becoming part of a block are the compo-
nents that are repeatedly used in your drawings. In architecture and con-
struction, examples of these components are doors, windows, and fixtures;
or drawing symbols, such as a North arrow; or labels for a section cut line
(see Figure 7.1). In mechanical drawings, these can be countersunk and
counterbored holes, screws, bolts, fasteners, switches, or any other objects
that you find yourself repeatedly drawing. In your cabin drawing, you'll con-
vert the doors with swings into blocks. You'll then create a new block that
you'll use to place the windows in the cabin drawing. To accomplish these
tasks, you need to learn two new commands: BLOCK and INSERT .
Creating and inserting blocks
Using the
WBLOCK command
Detecting blocks in a drawing
Working with autoCaD's DesignCenter
Controlling the appearance of palettes on your screen
 
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