I deal with aluminum on a daily basis. Apparently you don't know about its age-hardening qualities. At the moment, I am trying my best to repair and document an aluminum (6000 series) storage tank that continually cracks, even from the heat of a grinding wheel. Send your structural engineering degree back to the college you went to, maybe they will refund your money owing to the lack of education you received.
D.B.
B.S Biology/U of L.
If I want weldability, or cheap rims for a car, I'll go with 6000 series. We typically stick with 7075 for strength, though I did work with a big 2219 hand forging once on a launcher. (we waited months for Alcoa to get that thing to us, only to see the NC end mill skip a command and turn it into scrap, but I digress).
For your nonsense, I'll stick with the cheaper 5000 series stuff they make lawn furniture out of so we can all sit back and have a good laugh at your BS. In BIOLOGY no less.
Btw, 5000 series would also be less susceptible to all that heat your generating with that grinder, but undoubtedly you learned that back when you were growing all those aluminum cultures in petri dishes in school.
Go away kid, you're bothering us.
