Form tab missing?

[Anonymous]

I would like to create a form from a series of lines on different reference planes, but I'm not able to find the Form panel under the Modify│Lines tab. Help!

[barthbradley]

Its in the Massing Environment.  

In the Project go to Massing and Site Tab=>In place Model to start an Massing Session.

Or, are you looking for it in a Family? Mass Template? Generic Model Adaptive Template?  

[Anonymous]

Thanks so much! I was finally able to find it under the Massing & Site Tab.
However, when I tried to create a solid form, it said "Unable to create form element".
What could be the cause of this?

[barthbradley]

Could be any number of reasons.  Show us a picture of what you are trying to do.  

[Anonymous]

I have 3 different reference planes, each of which I've created a model line/spline. I'm just trying to create a solid form from the series of lines!

[barthbradley · Accepted solution]

Are all the splines drawn on planes parallel to each other?  

Like this?

[Anonymous]

Oh my God. They weren't. Silly me! Thank you so much!!