1. Restore using suction cups:
After the aluminum plate is indented, it can be restored with a suction cup. First, select a suction cup of the appropriate size, place it right in the center of the concave area, and then press the handle of the suction cup firmly to lift the concave area of the aluminum plate with the suction cup.
2. Restoration based on the principle of thermal expansion:
In addition to suction cups, the principle of thermal expansion can also be utilized for restoration. The specific steps are as follows: Use a heating tool to heat the recessed aluminum plate until the metal around the aluminum plate turns ashen. Then stop heating and wait for a few minutes. At this point, the metal around the aluminum plate naturally expands due to thermal expansion, allowing the concave areas to gradually and naturally recover.
