Originally Posted by
cub builder
Bert,
You really need to spend some quality time with AC 43.13-1B (especially Chapter 4) and perhaps some time with an A&P mechanic that specializes in sheet metal. Some aluminum can be gently worked with a shot bag and small plenishing hammers. Working aluminum is typically performed as an incremental process. It also depends a great deal on the alloy and temper of the aluminum as well as the type of damage as to whether you need to add doublers or splices, gently hammer it back to shape, or replace it. All of AC 41.13 is available for free on line in .pdf format, or can be purchased in book form. As an aircraft repairman, this is your bible for acceptable practices.
-Cub Builder