Hi GuyLuke,

re:
> Just wondering why the planar command can't be made to render 3d surfaces like this from a closed curve?

The planar command only knows how to build a planar surface which is not what you have here.

I would at some point like to make a method that would automatically reverse engineer the 2D profiles from a 3D curve like this. That will be fairly difficult to make, in the meantime it's better to use 2 2D profile curves to generate it by extrusion and cutting as I showed above.

Usually it is best to work primarily with 2D curves and generate 3D curves as the result of intersections instead of trying to generate a surface from a 3D curve.


> I'm also trying to figure out how to cut the 3d closed curve into equal halves, I would have thought a boolean
> merge with a straight line through the middle would have worked but it doesn't.

Can you please post the .3dm file with the line through the middle that isn't working for you?

Usually Edit > Trim is the thing to use to cut a curve.

- Michael