Hello

I am needing to find out if there is a way to take a curve that has multiple segments, join them together as one curve and then perhaps increase the number of segments for a more rounded smooth look.

Please see below:

(I have taken my curve (14 Segments) and welded together, but cant seem to increase the number of segments and get the rounded smooth curve i am needing). Perhaps I am going about this in the completely wrong way, can anyone can help please?