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CAD tip CAD tip # 7068:

Question CAD 
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Q - question

Parametric dimensions: changing geometry by overwriting dimension.

A - answer Since AutoCAD 2010 you can not only change the dimension by changing the geometry, but also use the opposite process - change the geometry by changing (overwriting) the dimension text.

From the ribbon Parametric > Dimension run e.g. the function Diameter constraint (the command DIMCONSTRAINT). Select a circle and confirm the placement of the dimension. Using the CONSTRAINTNAMEFORMAT variable you can influence the display of the dimension (dim constraint). Now double-click on the dimension text and change its value. The circle diameter will change accordingly.

See the animated sample:

Parametric dimension

100% *  CAD 
23.11.2009    6968x  
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applies to: AutoCAD 2010 ·

See also:
Tip 8846:Parametric triangles - isosceles, right-angled, equilateral
Tip 7824:Using constraints for simulations of mechanisms in AutoCAD.

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