The search led me nowhere. 

I was told something along these lines. When you put your edging around your part and seal that with the modeling clay or what ever is is you use. Then, make a mold this gives you half of the curve. Say like you made the top of a hood. Then you make a mold of the under side of the hood. This will now have the reverse to the original half of the curve. When you epoxy or glue the 2 halves together this helps to form that rolled edge. I hope this makes a little sense. I  just got back from a going away party in Germany and drinks are making it hard to say what I want. 

Yes that definately makes sense but only for a part that would have a top/bottom. From what I have seen, some people make rolled edges on single piece parts which drastically reduces post prod. trimming. That's kind of what I'm after too. 

Its all in the pattern/original part.

As long as the pattern has rolled edge, then as long as you place your flange appropriately and dont use too much filleting wax, then the rolled edge will be transferred to the mould and any parts produced from it.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

Thanks for the reply, I suppose that's all there is to it. I have seen rolled edges that go almost as much as 180 degrees and thus it would just necessitate being crafty with a multipiece mold for releasing the part....