how can I "flatten" a regular house key similar to the flattened pennies from state fairs or railroad tracks? Answered

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9 years ago

I guess there are no RR tracks by your house?

9 years ago

Didn't you ask this already?

9 years ago

Crude but effective is an anvil and a big hammer. Keys are usually made from a soft metal like brass. They flatten easily.

9 years ago

Find somewhere with a set of rollers to pass the key through. Local engineering firm may be able to help.