# DWG/SAT Solids conversion to IFC

**URL:** <https://forums.buildingsmart.org/t/dwg-sat-solids-conversion-to-ifc/1970>\
**Category:** Uncategorized\
**Created:** [October 30, 2019, 10:39pm UTC](https://forums.buildingsmart.org/t/dwg-sat-solids-conversion-to-ifc/1970 "2019-10-30T22:39:39Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![Moult](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.buildingsmart.org/moult/32/196_2.png) [@Moult](https://forums.buildingsmart.org/u/Moult)\
**Post date:** [November 1, 2019, 2:47am UTC](https://forums.buildingsmart.org/t/dwg-sat-solids-conversion-to-ifc/1970/4 "2019-11-01T02:47:20Z")

</div>

Good morning @Hans_Lammerts - I looked at your file and the reason the import is failing in Blender is because the `IfcAdvancedBrep` geometry representation is not fully supported in IfcOpenShell yet. IfcOpenShell is not alone in this issue, unfortunately - as you can see [many viewers have issues with this type of geometry](https://forums.buildingsmart.org/t/any-tools-can-view-and-measure-ifc4-includes-geometry-type-is-ifcadvancedbrep/1765). If I import your IFC2X3 file (which doesn’t have `IfcAdvancedBrep`), then it works perfectly 🙂 - however this issue should be solved. The good news is that there is already a [known bug](https://github.com/IfcOpenShell/IfcOpenShell/issues/586) for this. Do you mind sharing your file with @aothms ? If so, he is the IfcOpenShell expert who can help fix this!

I have attached XBim’s attempt to load your IFC4 model with `IfcAdvancedBrep` - it also seems to have issues. I did manage to load it in BIMCollab, though, so that’s a good sign!

 ![image](https://us1.discourse-cdn.com/flex016/uploads/buildingsmart1/original/1X/ca2175c31c20b379be595433ddfe8a7a38b10694.png)

---

_[View the full topic](https://forums.buildingsmart.org/t/dwg-sat-solids-conversion-to-ifc/1970)._