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What are the dangers of scratching a bowl of ice cream freezer machine?

I just made some ice cream and tried to recover recent years parts on the bottom when I realized that there were very few scratches on the back (stupid me). Then I read the instruction manual and has GRAS is very important that the container from the freezer does not scratch … He also mentions that security is important for people who use ice cream maker. Does anyone know what is and what risks are talking about? Please help .. I really want to eat my ice cream.

If stainless steel, the oxide surface could be scratched. If it is glass or plastic could break or crack because its molecular integrity has been compromised.

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