Microwave used as Faraday cage?

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(21 August 2012, 06:08)Tigs Wrote: you know all you need to make a faraday cage is a metal box even an old biscuit tin with a tight seal will do as long as you line it with something like polystyrene or wood so what you are protecting does not touch any of the metal

Still worth the phone test though. If your phone rings then you are not protected.