Rhino training level 2 detergent bottle

I find it hard to create the “s” shape fillet between bottle and offset surface, so I follow Pascal’s method in this thread.

I do several “fin”(don’t know why cannot do it at once), then join the generated curves. Then when I try to “filletsrf” between the fin surface and the bottle, “FilletSrf failed to create fillets”…

Can someone point out what I did wrong when “fin”? Thanks in advance.
Detergent Bottle_unfinished.3dm (4.4 MB)

Hello - the inner surface is trimmed too short to accommodate a fillet that fits on the fin surface
image

Utrim that inner, pink surface, make the fillets (r=1.5 or so)

and then fillet those fillets to the outer surface.You can delete whatever is left of the Fin surface.

image

then trim with all the new fillet surfaces.

Any luck?

-Pascal

Thx. It works like a charm. I start to wonder whether it’s always better to do fillet first then trim the surfaces?