Use this procedure to convert objects to Free Form mass elements. The resulting Free Form mass element is a faceted approximation of the object. The smoothness of curved edges is controlled by the FACETDEV variable. 
This variable specifies the number of facets to display on curved AEC objects. 
- Open a tool palette that has the Convert to Mass Element tool and select the tool. 
Alternatively, you can click 


. 
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- Select the object(s) that you want to convert to a Free Form mass element, and press Enter. 
The Convert to Mass Element worksheet opens. 
 
  
- Enter text for Description. 
 
- To convert all of the selected objects into one mass element, select Convert to single boolean mass element. 
 
- Alternatively, to convert the objects within your selection to separate mass elements, select Convert to individual mass elements. 
 
- To erase the original geometry of the objects, select Erase layout geometry. 
 
- Click OK.