[SOLVED] high res STEP file with artefacts

[sant0s81 22]

Hello,

we got an extreme high res model as a STEP file.
To open the file in Houdini, I used FreeCAD to export the geometry as an .obj. file.

Problem is, that I get bad modeling artifacts.
The model is HUGE, so it would take forever to remodel everything.

Is there a way, to flatten out these artefacts?

I already added a Normal SOP and was trying the Facet SOP without good results.

Attached is an example of the artefacts. Its the rear part of the geometry, but also the rest of the model has a lot of little till bigger artefacts.

Thank you!

 

 

Edited March 8, 2019 by sant0s81

[Muller 0]

Could be a problem with FreeCad? Try different CAD may be...

[DaJuice 48]

I would suggest you find a method to export STEP files that will preserve the normals coming from the CAD program. I don't think you will get good results from adding the normals after the fact because of the way CAD software tesselates solids/surfaces to polygons (no co-planar supporting edges around bevels for example). Keyshot does a decent job converting STEP files.

[mooopstar 3]

Working with converted Step Data works actually quite well in Houdini in comparison to other packages. Please check the following: Normal Node--> Add normals to Vertices, Cusp Angle 30 Weighting Method: By Face Area.

If you still have Problems you can give me your HIP file, i will have a look and try to help you.

[sant0s81 22]

@mooopstar That does the job perfectly, no more artefacts.

Thx alot!

 

[Muller 0]

@mooopstar Thx for this solution, I will keep it in mind

[mooopstar 3]

Oh, just saw your answer... Happy, I could help!