# An internally hollow entity

**URL:** <https://discourse.mcneel.com/t/an-internally-hollow-entity/171165>\
**Category:** Rhino for Windows\
**Tags:** windows, rhino8\
**Created:** [December 10, 2023, 5:20pm UTC](https://discourse.mcneel.com/t/an-internally-hollow-entity/171165 "2023-12-10T17:20:30Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![Tom\_P](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/tom_p/32/766520_2.png) [@Tom\_P](https://discourse.mcneel.com/u/Tom_P)\
**Post date:** [December 11, 2023, 12:03am UTC](https://discourse.mcneel.com/t/an-internally-hollow-entity/171165/3 "2023-12-11T00:03:55Z")

</div>

there is similar topics

found this one - but there was another one…

> [@Booleandifference fails to create internal void](https://discourse.mcneel.com/t/booleandifference-fails-to-create-internal-void/131558):
>
> I tried using the booleandifference command to make an internal void inside a solid and Rhino7 (7.10.21256.17001, 2021-09-13) fails the void creation, reporting “Objects do not intersect. Nothing done.” Seems like a bug to me. Does anyone have any suggestions that I’m missing on how to make voids in solids?

ok found one more…

> [@3D printing of empty inner volume](https://discourse.mcneel.com/t/3d-printing-of-empty-inner-volume/149077):
>
> Hello, Is there a way how I could design inner volume above outer volume? I would like to design it for 3D printing purpose and I tried Boolean difference and I got the nothing is intersect. This may be true I need my inner volume to be designed certain thickness (offset) from outer surface volume as on picture in clipping plane attached.

one more

> [@Remove internal inclusions](https://discourse.mcneel.com/t/remove-internal-inclusions/32130/7):
>
> Dunno, if the objects are solids (closed volumes) and you are able to BooleanUnion everything - which you should if things are built and fit correctly - you will end up with one outer volume and (perhaps) any number of inner disjoint volumes. I say “perhaps” because in your example, when I BU the parts, the inner volume just disappears “automagically”. IF there are inner volumes that do get left, just unselect all, select the outer volume and invert/delete. Good to go. –Mitch

---

_[View the full topic](https://discourse.mcneel.com/t/an-internally-hollow-entity/171165)._