Scratched coating in old ice-cream maker: is it safe? I got an old ice-cream maker at a thrift store (Vitantonio's Gelato Modo II). The bowl has a Teflon coating. There is a chip in the bottom about half the size of a dime, below which there appears to be plastic, not metal.

What I've looked up about Teflon safety seems to say that the major risks are high heat (fumes) and exposure to the aluminum under the surface of many coated pans if the coating is damaged. Since this is an ice-cream maker and the basin appears to be plastic, those wouldn't apply. Is this thing safe to use, or are there additional risks I haven't found?
I would not use it given the fact that you will be using it to make a mixture for ice cream, pieces might end up in the mix. You can try it out a couple of times and if no parts fall out then should be good to go. Would not recommend to use it at a business but for personal use only.