A serrated metal disc when spun at 5 000 to 6 000 rpm against the sheetmetal will heat any high spots though not to red hot as with the torch without touching the surrounding areas.
How to straighten sheet metal with heat.
With the right tools you can easily straighten aluminum yourself rather than spending money on a new piece of metal.
Straightening tempered aluminum sheets.
Some times it is better to just cut out a bent piece of metal and replace it rather than try to straighten it due to the time it takes to heat and beat and twist etc.
I don t see why it couldn t be cut and welded they repair aluminum boats all the time.
Learn the basic steps of the steps when your car is being repaired.
The metal has to do something if there is to much of it.
Whether heat straightening is the right repair procedure.
The fabricator does not heat this metal to the point where the metal undergoes molecular changes.
I don t think the bow is a heat warp i think it s a buckle caused by to much metal at the top caused when the bottom portion of the transom shrunk after the weld cooled.
Aluminum is highly malleable which makes it easy to work with but also easy to accidentally bend.
Stretching hot shrinking annealing metal finishing cold shrinking hot work planishing.
If you do inadvertently bend a piece of aluminum don t assume it is ruined and throw it away.
How to straighten metal on cars that have been wrecked.
Back to part one straightening tempered aluminum sheets key words.
Careful observation of the effects of the heating will allow you to make adjustments to the location and the amount of heat applied to further the process.
Heat straightening does not symmetrically straighten the metal and is a gradual process.
As with a steel part a good start is made by pushing or bumping out with the appropriately contoured tool.
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To accomplish heat straightening you must apply controlled heat to the proper places on the metal gradually to allow the metal to expand and shrink.
Heat straightening is the art of strategically applying heat to sections of a piece of steel that has been bent out of shape.
If it is a simple bend by all means heat and straighten but if it is bent and twisted forget it just whach it off with your oa torch and fit in a new piece weld it in with your portable welding machine.