I was given an aluminum hood that someone sandblasted and warped the metal. Can it be shrunk with heat/cooling like sheet metal? What's the best way to straighten out (if possible)?
This is the classifieds section (mostly stuff for sale or wanted). You will get more and better answers on the regular forum.
But, the short answer is 'yes', heating and shrinking can be done on aluminum sheet metal.
HOWEVER! Doing so with aluminum is NOT quite like doing so with steel. There is NO glowing red to tell when the temperature is right. Aluminum goes from "still too cold" to "oops it has melted away" in about one second. It takes some practice to notice the very subtle change in color required to shrink aluminum.
Oops, I'll get it over to the forum.....sorry.
No need for a "sorry", I just want you to get the best advice you can, from some of the best people that know. Our forum members.