CAD - general - customized Brep for generating CAD model

customized Brep for generating CAD model

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Forum Name: CAD - general
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URL: https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12683
Printed Date: 07.Jul.2026 at 17:59

Topic: customized Brep for generating CAD model

Posted By: Archaiser
Subject: customized Brep for generating CAD model
Date Posted: 30.Mar.2018 at 23:19

Hi All

I am trying to generate a solid CAD model from a custom surface definition, such as B-splines surfaces. Is there a tool where I can write code to generate my own B-spline surface (from scratch down to every detail), and use that exact surface definition to output a solid CAD model? Similar to something that is obtained in software like NX/Solidworks..

Thanks,

Archak

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Impossibility is a concept, possibility is a vision.

Replies:

Posted By: philippe JOSEPH
Date Posted: 31.Mar.2018 at 08:43

Hello Archaiser, I don't know if AutoCAD can create "smoothed" solid directly from a custom surface.

Maybe Inventor would be a better choise because it looks like more NX/Solidworks.

More of this AutoCAD doesn't work like the 2 others.

AutoCAD would be more for common steel work with square/round pipes generated under a hydraulic press along plies than "automotive" smoothed surfaces.

On the other hand you can generate sweeped solid from a surface to an other or by sweeping a surface along a path.

Eventually, see my AutoCAD file : 3D SOLIDS 01.dwg in the CAD/BIM Blocs library here in the site.

See also The Tip 6606 : How to create AutoCAD geometry from Excel?

Eventually, place here an example of your work for us to help more efficiently.

Posted By: Vladimir Michl
Date Posted: 31.Mar.2018 at 12:12

It may be quite difficult to create B-Splines but both AutoCAD and Inventor can do this (via API).

An example of generated 3D objects (meshes):

https://www.cadstudio.cz/en/apps/3dplot/

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Vladimir Michl (moderator)
ARKANCE - https://arkance.world" rel="nofollow - https://arkance.world - Autodesk Platinum Partner

Posted By: philippe JOSEPH
Date Posted: 31.Mar.2018 at 12:38

OK Vladimir, and is it possible to easily create solids from meshes?

In fact I have a complicated 3D object ( my file WORKER 01.dwg in the CAD/BIM Blocks ) that I want to pass to Solidworks and NX but as it's only a mesh ( I supose ) nothing goes to Solid or NX but the helmet that I did in real 3D solid ( and I haven't suceeded in "saving" all my AutoCAD 3D models to NX ).