Re: Vortex bowl broke....
hmmm... that's pretty low. It's kind of just a mod bowl with a very large hole now. A funnel has a much taller spire.
I have no experience with steel bowls but in general I have heard that they have problems with over heating, heat distribution and heat conduction. I would be worried about melting the grommet as metal is a much better conductor than clay. It will get hot much faster and will get much hotter than clay which can result in burning. this is the most common complaint I heard with metal bowls.