You'll have to dismantle

it extensively... but you can use popsicle sticks and/or a small ball-peen hammer (for shaping the curve), soft mallets & pine blocks to work the metal. You may have to use c-clamps to hold it steady, and to hold down make a backing block of pine or other soft wood.

Be careful not to overwork or stretch the aluminum, you can make wrinkles or cause brittle tears if you do.

Good Luck,

N.

Buy a used panel in good condition on ebay. It's precision casting aluminum I don't think you can repair it particularly if aesthetic is important for you.

Used a guitar capo with soft rubber ends to bend it back

I did this on a new macbook pro (13") and made the mistake of bending the corner back with a pair of needle nose pliers which scratched the aluminum before I could get it back into shape. Then I dropped it AGAIN on the other corner and bent both sides back without dismantling with a Kyser KG12B guitar capo (runs maybe $12) which is designed to not scratch guitars. It's not perfect like it was but I'm over it and now closes without scraping the bottom case. I also purchased a black speck snap-on case and it looks great.

Disclaimer: If you go this route be very gentle when shaping the top case as not to put any stress on your screen or you'll turn a little problem into a big problem.

Hey, I just did this with my 13" Macbook Pro and it worked like a charm, though it's still not perfect. I simply used a needle nose pliers on top of some plastic packaging from a pair of headphones, but you could use the pliable plastic that comes in the packaging of anything. Simply place the plastic underneath the pliers and slowly and carefully bend the casing of the Macbook. If you go through the plastic at all, move the pliers to a different spot on the plastic. Good luck!

I too had this same problem with the corner of my 2012 13" macbook air. I bought needle nose pliers and tried to bend it back to no avail. However, after researching through the forums I realized that my credit card (Chase Saphire) would pay up to $500 to repair it since I had bought the item within the 90 day period (to replace the screen will cost $400). I believe Visa Signature also does the same thing. I am definitely going to buy a hard case for it once I get it back in a couple of days.

Be sure to check if your card has the same opportunities!