By far the most convenient and quickest method to remove powder coating is to use a burn off or hot strip oven. Like the name implies, they use high temperatures (up to 1000F degrees) over several hours (or minutes in some uses) to burn coatings to ash. Operation is as simple as loading the oven up, turning it on, and waiting for the oven to run through its cycle.
This is not an ideal solution for small shops or DIY'ers!
Most often burn off ovens are reserved for larger operations due to their relatively high initial cost. They are great for steel or other hard metals, but can be risky for aluminum due to the high heat required to strip the powder. In many cases aluminum will soften at temperatures lower than what is required to remove the powder coating.
