Formula-Driven Massing
Formula-driven massing can be done in the project environment. But the challenge is that you have to work in context of the project, and all the parameters, formulas, reference planes, and lines can start to get in the way. Therefore, having the option of creating form-driven masses in the Family Editor without the clutter of the project environment can help you focus on what you're trying to accomplish.
You'll want to make sure that you open the right family template. The Mass template is in the Conceptual Mass folder (Figure 9.110). Don't start with generic model or some other template.
Also, turn off the gradient background that's on by default in the graphic display options ...
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