I'm wanting to make a number 3 cake for this Sunday but can't find a large ring tin. The only one I can find for a reasonable price is a 20cm one that was really shallow. All the others where $30 odd, which I might just as well buy a cake. Has anyone come up with and alternative to using ring tins? I saw on the net that people suggested putting a greased empty can in the centre of a large round pan. Does anyone know if this would work?