split surface in creo2.0
You can do the "TRIM" command.
1-pruning will select the object,
2-trim command to click,
3-select the cropping side after ...
"Beware of this option is 3-probability"
a -> cuts through one side of the object
b -> throws to cut the other objects
c -> not crop objects, only divides into two parts,
I think you're looking for the "c" option.....:)
I hope you find it useful.