Correcting it requires shrinking the metal in the affected area.
Auto body sheet metal work.
Sheet metal does have one major weakness though.
The application of such heat allows the crystalline structure of the metal to rearrange itself in ways that undo work hardening effects.
Whether you re fixing a dent rust hail etc.
The sheet metal body works to give your car its structural integrity and its unique eye fetching looks.
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The traditional method is to heat a small area of the stretched metal an area roughly between dime and nickel size with an oxyacetylene torch to red hot.
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Auto body sheet metal will lose the effects of work hardening if it is heated to temperatures of about 1 600 degrees f.
It s susceptible to rust.
Here is a tutorial how to video that show.
Sheet metal is a huge part of any hotrod build or autobody repair.
Stretching is the most common problem in auto body work.