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Over 165 AutoCAD tips and tutorials! |
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AutoCAD Tips & Tutorials
Dimensions and associativity
Normally, dimensions are associative, meaning that they change when you edit objects to which they're attached.
Drawings created in releases 2000 and earlier are not associative. Sometimes, you'll get a drawing that was created a long time ago and realize that the dimensions aren't associative.
To make them associative, type dimassoc (a system variable) on the command line and look at its value. If it isn't 2, type 2 and press Enter. However, this just affects new dimensions.
To associate existing dimensions from an old drawing to its objects, use the DIMREASSOCIATE command. On occasion, you need to use this command because dimensions have become disassociated.
- Type dimreassociate on the command line.
- At the Select objects: prompt, select the dimensions and press Enter to end selection.
- At the next prompt, follow the instructions to specify the point on the object to connect to the dimension. The prompt varies according to the type of dimensions you select. For example, if you selected a linear dimension, the prompt reads: Specify first extension line origin or [Select object] <next>:. This is very similar to the prompt you get when creating a linear dimension in the first place. You see an X marker (shown at the arrow in the figure) that corresponds to the part of the dimension for which you need to specify the point.
- The next prompt completes the process. For example, for a linear dimension, the prompt is Specify second extension line origin <next>:. The X marker moves to the second end of the dimension.
The command prompts you through all of the dimensions that you selected.
Related tips
Override a dimension
AutoCAD tutorial: Create an architectural dimension style
Quickly format dimensions
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