Forums >> Community >> Newbies >> Can't Cut It!!!

JoBrowns

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Joined: Thu, Sep 22, 2011
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This is what I did:1) Went into  Mass Family (to start a new mass)2) created a sphere3) created a rectangular cube that covers the bottom 2/3 of the sphere (so that you see only the top 1/3 of the sphere popping out of the top cube face)Goal:  To cut the sphere so that I am left ONLY with the top 1/3 sphere, i.e. the rectangular cube is gone (and took away the bottom 2/3 of the sphere with it).I have tried the Cut Geometry function but doesn't seem to work. Or I'm doing something wrong. Please help.Many thanksDeeply appreciated.

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WWHub

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Joined: Tue, May 16, 2006
13079 Posts

Yes, what you are doing wrong is your not thinking Revit.

First - do you really want a mass?  I build with walls - roof - floors.  Revit does too and in most cases, you should think that way so mass is not the first thing to think of.

Second - just use a revolve that is part of an arc.  No need to cut geometry.

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JoBrowns

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Joined: Thu, Sep 22, 2011
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Thanks for your response.

Sometimes I need to start with a geometric mass in order to get a certain shape, and then from there make the architecture out of it. iI cannot do that if I just start with floors and walls. Like a multi-curved roof or some unusual wall. And by the way, it's fine to think mass with revit because revit can support that kind of thinking. I just need to know how to work with the massing families. In fact it is one of the key items in the advanced revit courses.

Many thanks for your input.

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Typhoon

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Joined: Tue, May 22, 2007
5921 Posts

Just a question: did you know you have parameters to create your sphere like you want and don't need to CUT that with a void?

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I Hope and I Wish to LEARN  more, and more, and more.... REVIT

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