The application of such heat allows the crystalline structure of the metal to rearrange itself in ways that undo work hardening effects.
Auto body sheet metal work.
Stretching is the most common problem in auto body work.
Here is a tutorial how to video that show.
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Most of your car s body is made of sheet metal.
The sheet metal body works to give your car its structural integrity and its unique eye fetching looks.
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Sheet metal does have one major weakness though.
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.
There are various approaches to doing this.
It s susceptible to rust.
Stamped sheet metal is sturdy but still pliable enough for engineers to work with.
Whether you re fixing a dent rust hail etc.