Microwaving an individual smooth metal object without pointed ends, for example, a spoon or shallow metal pan, usually does not produce sparking. Thick metal wire racks can be part of the interior design in microwave ovens (see illustration). In a similar way, the interior wall plates with perforating holes which allow light and air into the oven, and allow interior-viewing through the oven door, are all made of conductive metal formed in a safe shape.
Microwaving an individual smooth metal object without pointed ends for example a spoon or shallow metal pan usually does not produce sparking Thick metal wire racks can be part of the interior design in microwave ovens (see illustration) In a similar way the interior wall plates with perforating holes which allow light and air into the oven and allow interior-viewing through the oven door are all made of conductive metal formed in a safe shape