Merge only selected edge of surface/convert inner quilt edge to outer

[joojaa]

For reasons of convenience I would like to have a closed surface where one of the edges is open in Creo Parametric. A simple example could be a surface of revolution that is swept 360 degrees but has a open edge where the surfaces meet. Below is a artificially created image, where the sweep angle is close to but not exactly 360 degrees.

Revolved surface with open edge (but not quite closed)

So i am wondering is there:

1. A way to split a self enclosed surface at one and only one edge?
2. A way to merge only said edge and not all edges?
3. Convert inner edge to outer edge?

This would be handy at times.

[tbraxton]

Divide surface which is available in Creo 9+ as a core modelling feature. Depending on what you are attempting to do subsequent to this it may provide a solution.

About Divide Surface (ptc.com)

Example Creo 9 part enclosed.

[MartinHanak]

Just note ...

Resulting quilt is still divided into 2 pieces.

   

[joojaa]

No this does not work the edge is still a inner quilt edge i want to open the surface so it no longer wraps around. This was the first thing i tested. Think of me wanting to do something like edge rip in sheet metal mode but on a surface with no thickness. So in essence i want to draw a circle that is not connected on one side.

[tbraxton · Accepted solution]

Is this what you need? The cone is split and then flattened (yellow). Creo 9 model enclosed for reference.

[joojaa]

That is a good workaround, even though it only solves 2/3 of my problems*. Although i don't want to flatten the quilt.

Would be nice for usability if the Flatten quilt would allow you to specify a seam. Likewise that sweep could be disabled from merging closed loops for certain usecases.

* I ended up using a variation of this where i merge the part instead of trim