AutoCAD 2010/2011/2012 DWG Format

[#1]

Hello,

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. Any hint?

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.

I think I am missing some fundamental step.

I hope you can help me. Thank you in advance!

Maria

[#2]

Sweep along a spline would do just fine, no need to change to polyline.

Test this drawing to see it still stay as a solid.

[#3]

Hi Janet,

thank you very much for your kind reply.

I used your sample and it works exactly like mine. 

If I cut it tranversally in a random point along the tube, the section is a circumference, not a filled circle.

Only the two extremities of the tube have filled circular sections.

i hope you can help me.

Thank you

Maria

[#4]

Will the other program read .STL ?

[#5]

It reads only ACIS (.sat, .sab), IGES, STEP Pro E, Inventor, CATIA, VDA, inventor, DXF.

It is a program for biolectromagnetic simulations (XFDTD Remcom). 

[#6 · Accepted solution]

Maybe use REGION command to turn the circle to region and then SWEEP.

and you can also try ACISOUT command to get the .SAT file format.

[#7]

Great!!!!! it works!!!

Thank you very much! I really appreciate your help!

Maria