THANK'S TIG.... You are truly amazing with the Ruby scripts. This saved me a bunch of time doing tedious work of creating long lists of data. Best regards Jesper

Personally, I use Zorro2 and I would suggest it to you as well judging from the tasks that you are in. From my experience, it is by far, one of the best tools out there that helped me slice models. It is very easy and user oriented as when compared with other tools.

As I said, I just pulled the shape out of my hat. I didn't intend it to match a production Y. The process would be essentially the same anyway.

@tig said: To be a solid the object's edges must have two faces - no more and no fewer. Very "solid" definition, thanks! I have never thought of this approach (only the "long list" way what a solid has to and must not consist of)

How about a low poly segmented fillet smoothed & with a image of a weld applied?

Wow... I'm impressed. That works like a charm. Thank's TIG, Best regards Jesper