No, you should not microwave a cast iron skillet. Microwaving cast iron cookware is not safe and can damage both the microwave and the skillet.
Here are a few reasons why you should avoid microwaving cast iron:
Metal in the microwave: Microwaves work by emitting electromagnetic waves that excite water molecules in food, causing them to heat up. Metals, including cast iron, reflect these waves and can cause arcing or sparks in the microwave. This can damage the microwave and create a fire hazard.
Heat distribution: Cast iron cookware is known for its excellent heat retention and distribution properties. However, in a microwave, the electromagnetic waves do not penetrate the cast iron effectively, making it ineffective for cooking or heating food.
Risk of cracking: Cast iron skillets are heavy and can potentially cause the microwave's turntable to become unbalanced or even crack the microwave's floor due to their weight.
Magnetron damage: Microwaving metal objects, like a cast iron skillet, can also damage the magnetron—the component responsible for producing microwaves in the microwave oven.
If you need to reheat or cook something using your cast iron skillet, it's best to use a stovetop or oven, which are designed to handle the heat and weight of cast iron cookware safely. Avoid using cast iron with non-microwave-safe materials like enamel-coated pans or pans with wooden handles when using the microwave as well.
Always read the manufacturer's guidelines and warnings for both your microwave and cookware to ensure safe usage and prevent any potential damage or accidents.