You can get it from aircraft spruce. Alodine is what is used on aluminum before priming. It's basically a coating of microscopic hooks (literally) that allow the primer to adhere. Aluminum is usually soaked in an alodine mixture and out it pops gold.
--Chris
Exactly. I have this solution at work (aircraft components repair station). You can buy it from any aircraft supplies store, even you can find it in Internet stores.
