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Old 12-08-2015, 06:29 PM   #3
rotorwrench
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Default Re: Raising the vin number on a frame.

There are several ways to do it for forensic purposes. A solution containing Hydrochloric acid is used for steel but they add a few other ingredients.
This book has some info: https://books.google.com/books?id=KM...number&f=false
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