I just got done cleaning up a fork with that Aircraft Stripper and it worked pretty good however the guys at the paint store said the same as Six Jours, its "bad stuff!" Don't breath it, get it on your skin, wear gloves, and damn sure don't rub your face or eyes. They scared me a little but I still used it since it was a small job. After it dried really well I just washed it off with hot water and hit it with a wire brush on a drill and it cleaned it up. I don't like spending alot of money on cleanup stuff like this but its almost worth it to have it lightly sand blasted so long as the guy doing it knows the tubes are lightweight and damageable. I am not familiar with aluminum tubes though so it may not be applicable.