Creating Drawing Files for use as Blocks

Creating Drawing Files for Use as Blocks

You can create drawing files for the purpose of inserting them into other drawings as blocks. Individual drawing files are easy to create and manage as the source of block definitions. Collections of AutoCAD LT symbols can be stored as individual drawing files and grouped in folders. For an explanation of the schematic representation shown, see Understanding How Blocks are Stored and Referenced.

Creating a New Drawing File

You have three methods for creating drawing files. You can

Create and save a complete drawing file using SAVE or SAVEAS.
Create and save only selected objects from your current drawing to a new drawing using EXPORT or WBLOCK
Create and save selected objects along with a description to a new drawing using BMAKE.

With any of these methods, you create an ordinary drawing file that can be inserted as a block into any other drawing file. Using BMAKE is recommended when you need to create several versions of a symbol as separate drawing files or when you want to create a drawing file without leaving the current drawing.

Changing the Base Point of Drawings to Be Used as Blocks

By default, AutoCAD LT uses the WCS origin (0,0,0) as the base point for drawing files inserted as blocks. You can change the base point by opening the original drawing and using BASE to specify a different base point for insertion. The next time you insert the block, AutoCAD LT uses the new base point.

Updating Changes from the Original Drawing

If you change the original drawing after inserting it, the changes have no effect on the current drawing unless you redefine the block by reinserting the changed original drawing. If you expect the original drawing to change and you want the changes to be reflected in the current drawing, you may want to attach it as an external reference instead of inserting it as a block. For more information on external references, see Referencing Other Drawings.

Using Paper Space Objects in Blocks

Objects in paper space are not included when you insert a drawing as a block. To transfer paper space objects to another drawing, make the objects into a block or save them in a separate drawing file, and then insert the block or drawing file into the other drawing.