At 550 degrees f you can shrink the aluminum without affecting the temper or hardness.
How to shrink sheet metal.
This takes away some of the stretch.
This is where the tuck shrinking fork from a few weeks back comes into play.
Using hand tools and machines.
Dave miles 60 005 views.
Start by inserting the fork into the edge of the sheet metal at the desired depth of the shrink you want to make.
Welding suppliers carry a wide range of temperature crayons that melt off the surface when your desired.
If you have access to a bead roller roll yourself a bead and shrink it.
Propane can do the same thing although it is a much more crude method.
Sheet metal shrinking demonstration by rich at mustangs to fear.
The bulge can then be tapped down flat with a hammer and dolly to thicken the metal in that spot.
I have identified 14 distinct ways to shrink.
Then remove the tool and move it over so the fork will roll the metal over the other side of the fork by twisting the metal the other direction.
A common recommended fix is to use oxy acetylene heat to create a localized hot spot that bulges the metal above the mean surface of the panel.
Then twist the handle of the tool to twist the metal around one side of the fork.
You have to adjust your mind to the concept that when you hammer on sheet metal with a steel hammer onto a steel dolly or anvil that you will expand or increase the surface area by thinning the metal.
Shrinking stretched sheet metal with a propane torch duration.