A while back I saw a youtube video detailing new SW2015 features to make a flat pattern print out for a bent/rolled tube with miter cuts.  For the life of me, i cannot find that video again.

There is lots of info out there about making flat patterns for straight tubes with mitered/coped ends, but the video I recall seeing used some new meshing/flattening feature for compound curved surfaces.

Not sure how better to explain the situation, but here is a screenshot of the tubes i need flat patterns for.  Two tubes, coming in from the bottom, are straight, and those will be easy to make flat patterns for -- this is well documented.

The third coped tube (highlighted), is 1.5" sch 40 rolled pipe with an 8" CLR.   I need to make flat patterns for this pipe, and others like it.  I know this can be done in sw2015, i just cant relocate the info i had seen earlier this year covering this topic.

Can someone point me at whatever the flatten mesh feature is or maybe the youtube video covering these steps?

Thanks in advance