What's your favorite way to convert a DWG to IFC?

T by theoryshaw on 9 Nov 2022, edited 9 Nov 2022 #

B by bitacovir on 9 Nov 2022, edited 9 Nov 2022 # +6 votes

@theoryshaw said:

What's your favorite way to convert a DWG to IFC?

:)

C by Coen on 9 Nov 2022 #

https://www.blender3darchitect.com/cad/importing-dxf-files-to-blender-2-8/

Never tried this, but I remember there was also a standalone dxf converter to fbx? I vaguely remember using that to get profiles into Blender and convert them to meshes, then extruded them and then exporter them to IFC (This was before I knew BOLTS existed)

https://www.cadcollege.nl/cadtools/cadtools_symbolen_bouw_details_Profielen.htm

Could still be useful for highly detailed historical window frames.

J by JanF on 9 Nov 2022, edited 9 Nov 2022 #

Well depends on what kind of data you need, if it's simple 2d, then adsk trueview to dxf then as coen says dxf import to blenderbim. 3d should work as well, but I never tried it.

Other than blenderbim, archicad supports dwg import quite well and exports basic 2d in ifc.

If it's something complexer (if I remember correctly even hatches don't survive blender import or archicad export) you'll probably suffer.

https://docs.blender.org/manual/en/latest/addons/import_export/scene_dxf.html

the docs also mention how to set up georeferencing.

T by theoryshaw on 9 Nov 2022 #

Sorry, should have a specified, a 3D dwg.

D by duncan on 9 Nov 2022 # +1 votes

This page is probably relevant: https://wiki.freecadweb.org/FreeCAD_and_DWG_Import

... you haven't mentioned what you've already tried.

J by JanF on 9 Nov 2022 # +1 votes

So apparently Autodesk removed the option to convert dwg to dxf from the gratis viewer, so the list Duncan posted is very relevant.