Hi, I am trying to make a model a model as shown in the reference image, i am stuck at the point where i am unable to blend edges of the surface to achieve rounded smooth finish.
Please help ! 
Surface Practice Model.3dm (382.3 KB)
you can use SplitEdge to use BlendSrf :
but you will have some issues down there due to the surface direction:
if it a possible way to where i convert this as one object in mesh and then smoothen it ?? will i be able to achieve desired result !
BTW, Thanks for your reply.
Hello - that image is blurry but sure looks like it could be SubD to me… meantime your surface has a problem here with some point messiness that I think I’d clean up before proceeding -
A VariableBlendSrf might be OK -
but he ends/edges do not appear to be planar in your image, nor quite as round as what Diego shows with a BlendSrf, which means it is likely to be a bit of work - but adding a knot to the BlendSrf may allow it to be flattened somewhat to match what the image shows - still, easier in SubD, Rhino 7 Feature: Subdivision Geometry
-Pascal
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Owsome that is what i was exactly looking for !
I think i will have to update to Rhino 7…
Thanks a lot @pascal @DiegoKrause For the efforts…