# Why my "familyinstance.bygeometry" creat an empty famiy?

**URL:** <https://forum.dynamobim.com/t/why-my-familyinstance-bygeometry-creat-an-empty-famiy/4747>\
**Category:** Uncategorized\
**Created:** [June 28, 2016, 3:00am UTC](https://forum.dynamobim.com/t/why-my-familyinstance-bygeometry-creat-an-empty-famiy/4747 "2016-06-28T03:00:05Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Yiping\_yang](https://avatars.discourse-cdn.com/v4/letter/y/c2a13f/32.png) [@Yiping\_yang](https://forum.dynamobim.com/u/Yiping_yang)\
**Post date:** [June 28, 2016, 3:00am UTC](https://forum.dynamobim.com/t/why-my-familyinstance-bygeometry-creat-an-empty-famiy/4747/1 "2016-06-28T03:00:05Z")

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I trid to import a ".sat "file to revit though the node “familyinstance.bygeometry”. It seemed to success in the dynamo emviroment by not in revit. the family named "“texing” is a total empty family. what is the problem?

 ![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/2X/6/66ed3b30c90d87bdb27549fd496f69c337c4a7d6.png)

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**Author:** ![Dimitar\_Venkov](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/dimitar_venkov/32/2068_2.png) [@Dimitar\_Venkov](https://forum.dynamobim.com/u/Dimitar_Venkov)\
**Post date:** [June 28, 2016, 3:16am UTC](https://forum.dynamobim.com/t/why-my-familyinstance-bygeometry-creat-an-empty-famiy/4747/2 "2016-06-28T03:16:03Z")

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My guess is that the sat geometry is too tiny to be visible inside the family.

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**Author:** ![Yiping\_yang](https://avatars.discourse-cdn.com/v4/letter/y/c2a13f/32.png) [@Yiping\_yang](https://forum.dynamobim.com/u/Yiping_yang)\
**Post date:** [June 28, 2016, 4:13am UTC](https://forum.dynamobim.com/t/why-my-familyinstance-bygeometry-creat-an-empty-famiy/4747/3 "2016-06-28T04:13:18Z")

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great！you are right. Thank you very much.The solid is too small in the family.  
But why ? I creatd the solid in the CAD , whose dimension was aboout 10000.And convert it as “sat” file though the dynamo,choosing the unit “mm”.But as the result ,in the revit family ,10000 mm change to 10mm. May I need to study more about the unit.  
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