Extrude 2D shape along a path

Hello,

I'd like to extrude a 2D shape along a path to make the following 3D shape:

Bridge with curved ends

Does anyone know if it's possible to do that in OpenSCAD? Or if not then is there alternative free 3D software that will do the same thing (extruding along an arbitrary path)?

The reason I want to make it by extruding is that the way I've done it at the moment is really ugly and does not work properly so I have to bodge it. Extruding will make it simpler.

Will

Most 3d modeling programs should be able to do that. They call it sweep or loft. Autodesk'sInventor and 123d Design can do it

lotw Wrote:
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> Most 3d modeling programs should be able to do
> that. They call it sweep or loft.
> Autodesk'sInventor and 123d Design can do it


It's called a sweep. A loft is blending between multiple 2D sketches (like an air duct transitioning from a rectangular cross-section to a circular cross-section).

WillStevens Wrote:
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Or if not then is there alternative free
> 3D software that will do the same thing (extruding
> along an arbitrary path)?
>
> Will

FreeCAD [www.freecadweb.org]

If you need help with the learning curve http://sourceforge.net/apps/phpbb/free-cad/viewforum.php?f=3&sid=d306e44b6d89c4a52d76d51a116b730c

From memory you create your 2d path in sketcher workbench. Create your path as a wire and then use sweep in the Part workbench. Its been covered in the forum in the past.

Edited 1 time(s). Last edit at 05/14/2013 11:52AM by KeithSloan.

openscad can extrude a dxf into a 3d object?

Ben

In the topic you created for the other way around (STL to DXF), rhmorrison gave you a link to the OpenSCAD wiki. The extrude option is right there under the "3D to 2D Projection" chapter.

NormandC if you're replying to my answer this isn't my topic I was giving the OP a suggestion.

Ben

You ended your sentence with a question mark, so I assumed it was a question and answered it...

Edited 2 time(s). Last edit at 05/30/2013 05:58PM by NormandC.