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Would aluminum foil destroy a microwave oven?

Best Answers

The problem is not the aluminum (or aluminium) foil but the reflected and accumulated energy that is the problem. For example, spoons would not present a issue whereas forks, because of their individual tines, would be more likely to create havoc. read more

No - it won’t destroy your microwave oven under normal usage. However, it can cause problems under certain conditions. This is an area I have studied extensively since 1977 when I had a project relating to the use of aluminum foil trays and microwave ovens. read more

Substantial pieces of metal, like the walls of a microwave oven, can usually tolerate these currents without any problems. However, thin pieces of metal, like aluminum foil, are overwhelmed by these currents and heat up very quickly. So quickly in fact, that they can cause a fire. read more

Yes you can under certain circumstances. As others have pointed out, aluminum foil reflects microwave energy rather than absorbing it. This can be very useful if the user wishes to shield some part of the food to prevent it from heating or overheating. read more

The magnetron isn't designed or equipped to handle energy bombardment like this. As a result, running the microwave empty, or with metal inside it, or even with "tin" foil present, can result in microwaves bouncing back to the magnetron, which will shorten the life of your microwave oven drastically, and could even kill it right off the bat. read more

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