Can I put a metal light switch cover in the oven to bake briefly?

Covering/ decorating a metal light switch cover with polymer clay. Its as plain as I could find, may have a slight shiny coating on it, but its hard to tell. I know I'd likely have lower the temperature a bit (maybe 200f) to attempt to prevent warping. Hoping someone can say that it won't melt and I... show more Covering/ decorating a metal light switch cover with polymer clay. Its as plain as I could find, may have a slight shiny coating on it, but its hard to tell. I know I'd likely have lower the temperature a bit (maybe 200f) to attempt to prevent warping. Hoping someone can say that it won't melt and I won't die from strange fumes. That would be great.
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