You may have to do it a few time depending how bad the dent is.
Panel beating aluminium sheet.
Aluminum must be annealed to move it very far.
The two magic tools for shrinking are practice and careful observation.
Fill bags with pro fill beater bag filler material below or 9 birdshot available at your.
When working with aluminium it must be remembered that it is a much softer material than steel and less force is therefore required to manipulate it.
Double stitched with heavy duty thread and seam covered with nylon binding to prevent leaks.
Any way this can be done to in effect shrink the dented part back to the original size.
If it is just a dent you are trying to get rid of you can spray washing detergent on the dent heat the dent slowly until the detergent dries up and hit it with the cold water should have told you this first have a bucket of ice cold water ready.
Form and shape sheet metal panels easily with these amazing leather beater bags.
All the panel beaters i know won t touch alloy there are only a few that will and apparently they charge for the skill.
First i coated it with soot.
Made of high quality 5 to 6 oz leather.
Planishing is the traditional term used for the process of smoothing a rough panel.
Some prefer to heat with the neutral torch flame and rub the panel with either a bar of soap or a stick of soft pine waiting for the material to char.
The panel can be stretched again imagining a wedge shape by beating out from the tip of the wedge and gradually increasing the width of the beaten area and the force of the blows up to the panel edge.
Bag has 1 1 2 hole on one side with extra wide hook loop for filling and refilling.
At that point the temperature is somewhere around 650f.
Straightening tempered aluminum sheets key words.
With a cold rag or sponge put it straight on the dent a lot of times it will shrink and pop back don t put the heat in one place for to long or you will melt the aluminium.
But none do any more than limit the stretch to some degree at the cost of beating up the work.