CAD blocks are named groups of objects that act as a single 2D or 3D object. You can use them to create repeated content such as drawing symbols, common components, and standard details. Blocks help you save time, maintain consistency, and reduce file size by reusing and sharing content rather than re-drawing it every time you need it.
With AutoCAD and AutoCAD LT software, you can create your own CAD blocks or choose from a large library of pre-made blocks, including:
You can add attributes or dynamic properties to CAD blocks so they can accommodate different text strings, shapes, or sizes. All CAD blocks can use the following properties:
Dynamic blocks let you edit individual block geometry. They eliminate the need to define a new block for every variation of shape and size.
A dynamic block has flexibility and intelligence. You can easily change a dynamic block reference in a drawing while you work, manipulating the geometry through custom grips or custom properties. Dynamic blocks let you adjust the block reference in place as needed, rather than search for another block to insert, or redefine the existing one.
For example, if you insert a door block reference in a drawing, you can easily resize the door by dragging the custom grip or by specifying a different size in the Properties palette. You can also change the open angle of the door. The door block can also contain an alignment grip, which lets you align the door block reference easily to other geometry in the drawing.
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