Dxf import and cap holes

Hello.
Some questions
If I have 2 dxf splines ....import them in Nvil can I use these as Nvil splines to create an accurate object?
if yes how? attached pic

I made an object in drawmesh, the pushpull...what is the proper way to cap the opening?
attached file.

In drawmesh if I draw a line and at the 2 ends it has the green dots...I cannot duplicate it...
what is happening? because I can duplicate other items...

Tnx!

attached file for the 2nd question

If I have 2 dxf splines ....import them in Nvil can I use these as Nvil splines to create an accurate object?

Yes you can. Select the two closed splines you imported > go to vertex mode > Go to Visual Tools and choose loft > set divisions how you like.

I made an object in drawmesh, the pushpull...what is the proper way to cap the opening?

Select the edges or the opening > Go to Visual Tools & use cap hole + > then set divisions as you prefer

In drawmesh if I draw a line and at the 2 ends it has the green dots...I cannot duplicate it...
what is happening? because I can duplicate other items...

Select your line > Go to Tranform Option of DrawMesh > Duplicate Line is available there. Alt+Space is the key to duplicate. On my windows system co-pilot fires up instead but you can turn it off in Copilot > Account > Settings. Account is hidden behind the sidebar of copilot.

Tnx I still need some help...
I could not figure out how to loft the imported dxf shapes.

Attach is the dxf and nvil scene what I am trying to do.
In Nvil I made what I wanted in about 2 min so very quick....but I need to be accurate
that is the reason I need to use the dxf lines.

I have probed a few cloud points and into my cad and want to build in Nvil3d upon those measurements.

Tnx!

Here is a quick video of how to loft between 2 splines.

https://youtu.be/gOUinlUYVsk

The imported circle has too many points which limits your ability to play with mesh segments after the loft. See if you can adjust your CAD softwares export settings to export a circular spline without so many points or recreate the spline in NVil with the spline Circle/Rect tool.

If you are already use Moi or other CAD software and want precision accuracy, CAD programs are best for that. Polymodeling software like NVil are for visualization purposes (they are faceted).