4/5-axis surface milling with a flat endmill

[JeroenD]

Good day,

I'm requiring a little help with 4/5-axis milling of a surface with a flat endmill.
We fabricate wedding rings and would like to use a new machine and CAM to do some mill work required for setting stones (in this case a setting called a pavésetting).
I've got the turning down to how I want it done.
And I've got the outer contour of the pavé done with Variable Contour using a Curve/Point drive method (drive curve is a curve which is invisible in the picture).
The path is milled using some sort of chamfer mill.

http://files.engineering.com/getfil...8-4868-89e6-e5c4b86cc5de&file=pavéSurface.png

But, now I'm having trouble milling the remainder of the curved surfaces.
In this ring the surfaces to mill only curve in 1 direction (it's a line revolved around the central axis).
I would like to mill the selected faces (not the grooves or the hole as they are already machined) using a small flat endmill (diameter 0.5mm or smaller).
I've tried various drive methods with Variable Contour using Towards Line as Projection Vector, but I can't seem to get it to machine the area correctly.

Any help or tips would be much appreciated.
I'm using NX 8.5

Here's a picture of the whole ring to make things more clear:

http://files.engineering.com/getfil...-4d58-81bc-76c630bbdeec&file=pavéSurface2.png

 

[JeroenD]

I've managed to get it (more or less) how I want it by creating sheet geometry in the contour of the cross with a bottom surface.
I then use Variable Contour operation with a Contour Profile drive geometry while selecting the walls and bottom surface.
So far it seems to work fine enough.