2 hours ago, Susanwusan said:Not springform, but loose-bottomed so that you can push it out, and the dip is deep enough to hold a nice amount of fruit and the like. Fluted ones are readily available but I don't like to spend time cleaning each individual "flute" and wanted one with plain side. I've had to get a fluted one that I'll try out before getting a second one.
Not springform. They may have the rings you are looking for here, and maybe you can simply use the bottom part of one of your fluted tart pans...