Forums >> Revit Building >> Technical Support >> nested void family

blairmack

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Joined: Thu, May 24, 2007
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Hi

I'm trying to load and array a nested void into another family to create slots in rhs steel posts and regular spacings.  The void family is a generic model and simply a void extrusion size is parameter driven.  The post family is a sweep and when I load the void family it seems to give me no option to cut the post with the void. I can of course create voids in the post family and array them but you get the old message about "too many instances, try nesting a family" which is what I'm trying to do but with not much luck.

Any help would be much appreciated. Cheers.

Blair

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blairmack

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WWHub

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Joined: Tue, May 16, 2006
13079 Posts

What you are doing seems rather complicated.  I would think a post is a simple form ... extrusion or whatever - and the voids are created as part of that from and set to cut it.  One void - not multiple voids.  (Remember - you can have multiple shapes in one extrusion (-be it a void or soild) just as long as the closed loops do not cross each other....

O O O could be three voids in one void description.

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blairmack

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Joined: Thu, May 24, 2007
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Thanks for that but I'm trying to control the slot size and array length by parameters.  That way this same slot can be used in multiple families I need.

Oh well maybe it's not possible.

Cheers.

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blairmack

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TKennedy

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Joined: Wed, Oct 7, 2009
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mccoolj

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Joined: Wed, Dec 29, 2010
58 Posts

I have a different but related issue where I have made a void extrusion on a face-based template, and it loads up fine into my family and cuts the host correctly, but I have an object directly underneath the void's host that I would like to also get cut by the void. Is that possible? The void shows as extending through the 2 objects, but it doesn't cut the lower one. I tried using Cut Geometry tool, but it won't recognize the void for me to pick it (presumably because it's inside a nested array?). Any ideas?

Jason

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