AutoCAD 2010 :: How To Fill A Hollow Object Created With The Sweeping Tool

Nov 7, 2012

I am trying to create a tube by sweeping a circle along a spline. I read many of the previous discussion threads on the topic but I still have some issues.

I first created my spline and transformed it in a polyline (some people recommended to do it). Then I created the circle.  Finally I sweep the circle along the path.

The issues are the following:

1) when I look at the tube using the 2D wireframe mode, I can see that the primitives are not completely regular. In some points there are weird intersections and I don't know how I can fix them.
2) I hoped the tube was solid. However, when I exported (as .IGS) it and see in another program, I realized that it has only two circular caps at the extremities of the tube, but inside it is hollow. 

I tried to transform it in solid or mesh or whatever, but it always gives me an error, saying that the object cannot be converted.

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Oct 31, 2012

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Apr 16, 2013

I am modeling an ASME pressure vessel with a 2:1 semi elliptical head upon which there must be a couple of lines of .375" trace tubing.  I created a 3dpolyine that is the center line of this tubing, and joined  all the segments into one so as to be able to sweep the whole thing and make one solid of the tubing run, but it simply will not sweep.  I get a message this it is "unable to sweep the selected object."  If I break the 3dpolyline, I can sweep parts of it, but the more complex the line segment, I again get the error message.  I have attached a copy of the tubing centerlines.

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Nov 7, 2012

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Jan 27, 2013

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Jul 14, 2013

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P.S. I have attached the .dwg file so that it makes more sense.

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==== i7 @3.4GHz ==== 8GB @666MHz ==== ATI/AMD @675MHz ==== win7 x64 ====

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