Face in two

[liz68]

I would like to know if there is a way to avoid Creo splitting a surface into two surfaces (see picture)

In this case, I created the outer geometry and subtracted the material in the middle.

[tbraxton]

Maybe. Post the model or explain the connection about the symmetry plane of the inner cut. It appears there is a dihedral angle where they meet at the symmetry plane.

[liz68]

Hi tbraxton,

I've imported a table of datum points to create a curve (in green), and used the curve to cut the geometry:

I mean, the same thing happens when I cut it with a circle:

why does Creo do this?

[Dale_Rosema]

Cylinders in Creo have always been split in two.

Though I am not certain of the reasoning, I sure there is a logic answer from a programming standpoint.

[Patriot_1776]

The reason was....they got lazy.  It's been a complete PITA the whole time I've used it, there's no reason for it ESPECIALLY since NO OTHER CAD system I know of does it.  It should have been fixed LONG ago.

Sorry OP, you're hosed.

[tbraxton]

Circles/cylinders are always split in Creo. Having said that your cut is not a circle. Can you post the table of points? Without actual data to query it is hard to say why it is split.