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13 Things Never to Put in the Microwave

Bob Vila Logo By Donna Boyle Schwartz of Bob Vila | Slide 1 of 13: <p>If you don't know it by now, we're here to tell you: Metal in a microwave is a huge no-no! Many microwaves are lined with metal, which acts like a mirror, bouncing microwaves around the box until they're absorbed by the food. Unlike your leftovers, metal is a great conductor of electricity; it reflects heat rather than absorbing it, and that's a big problem in a microwave. At best, a little metal in the microwave prevents food from cooking properly. At worst, the resulting heat will create sparks <a href="https://www.bobvila.com/slideshow/11-common-causes-of-house-fires-and-how-to-prevent-them-51360?#.WZ8_m5N97OQ">that could cause a fire</a> and render your microwave unusable. </p><br><p><strong>Related: <a href="https://www.bobvila.com/slideshow/11-surprising-uses-for-aluminum-foil-49000?#.WZ8-7JN97OQ">11 Surprising Uses for Aluminum Foil</a></strong></p>

Aluminum Foil

If you don't know it by now, we're here to tell you: Metal in a microwave is a huge no-no! Many microwaves are lined with metal, which acts like a mirror, bouncing microwaves around the box until they're absorbed by the food. Unlike your leftovers, metal is a great conductor of electricity; it reflects heat rather than absorbing it, and that's a big problem in a microwave. At best, a little metal in the microwave prevents food from cooking properly. At worst, the resulting heat will create sparks that could cause a fire and render your microwave unusable. 

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