Hi,

The gray blue surface shown at the screen shot does for some reason not exactly follow the
profile curve (cyan), it remains a gap. First I thought it might be a display problem, but
looking at it straight from the side, clearly shows an identation. And I was able to create
the same surface a different way, which didn't give me the gap.

In order to create this surface I used the sweep command. I picked the two profile curves
on either end and used the "center curve" as rail. The options were set to Freeform/Exact.
Maybe I am doing something wrong?

BTW, and I probably should create another thread for this, but is there a way to check if a
curve is completely planar, without showing the points and snaping the mouse pointer to each
one of them comparing the coordinate values?

Thanks in adavance