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How can I remove iridium coating from a helmet face shield?

Q. I have an iridium-coated motorcycle helmet face shield from which some of the iridium has been either abraded or dissolved, (don't know which). Is there is a fluid I can use, (alcohol, kerosene, naptha, etc.), to remove the remaining iridium coating, leaving a clear (undamaged) shield. I have no access to plating processes. Any guidance will be appreciated.

Marvin Travis
N/A - Kirkland, Washington
2003

Iridium is a very inert metal related to platinum. It can only be dissolved in concentrated acids. I suspect what you have is not iridium but something similarly named.

Ken Soderquist
- Blaine, MN, USA
2003

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