Classic billiard question

[Adui]

In my quest to become a better pipe maker, I am planning my next carve as a Billiard. My question is simple; is there anything wrong with a rounded edge on the top of the bowl? Or does it have to be flat to be a truly classic billiard shape?

[RickB]

Dome it if you're going Danish-ish, bevel it hard if it's thick walled, I guess leave flat if you want but I think that looks boring, usually. There should be a crisp line delineating the rim in any case, even if you dome it.

[Adui]

OK so doming over is ok, and so is beveling, but the lines need to be distinct. Good to know. We will see if I'm brave enough to tackle a dome freehand or not.