Nurbs Trimming Urgent

lets us suppose we have surface which is cylindrical shape,I have trimming wire at the end,after trimming in I am getting lower end of the cylinder but I want upper part of the cylinder,can u help me with this issue?
FYI surface and trimming curves are rational!

Sharad Verma's picture

For Trimming a Cylinder you need wire containing 4 curves; 2 circular curves, and 2 straight curves.

Also, one straight curve should be reverse in direction, then only you will get a closed wire.

How many curves are there in your wire?

rahulgalgali's picture

basically it is not cylinder,it is nurbs surface whose shape is like cylinder.... have a look at the attachment.
N thanks for the help,most appreciated.

Sharad Verma's picture

where is the attachment?

rahulgalgali's picture

I will send u at ut email can u plz give me ur mail id....i think i am facing some error while uploading(mine is rahulgalgali10@gmail.com)