This post might be overboard, but here are the things I use to deburr edges.
1. I have one of these mounted to bench grinder:
http://www.averytools.com/prodinfo.asp?number=3753
I use a disc sander attached to a drill with 80 grit sand paper (I think that is the grit paper I use) to grind this wheel down when the grooves get too deep.
2. I bought 10 of 1" by 1" wheels and have gone through all of them (finished deburring all of wing parts and empennage parts). They are small enough to fit into a lot of the holes. Once you get groves that are too big, the sand down on a belt sander. U can sand them down pretty small, such that you can deburr most holes on the wings and empennage. I did buy cheaper ones from ebay, but they sucked.
http://www.averytools.com/prodinfo.asp?number=3700
3. one of these kits, which provides you with a couple of 2" wheels (I never use) and the fittings to mount the wheels for the die grinder.
http://www.averytools.com/prodinfo.asp?number=201
4. one of the following, which is the holder for the discs below:
http://www.averytools.com/prodinfo.asp?number=15410
5. a box of these from ebay. these things kick butt for deburring the edges of ribs or any place where the metal is folded at a corner. I used about 15 on the wings/empennage.
http://www.ebay.com/itm/3M-2-Scotch-...3d345f&vxp=mtr
5. Finally, I really like to deburr rivet holes with the following tools. The extension is invaluable for inside edges of flanges.
http://www.averytools.com/prodinfo.asp?number=1046
cheers
ken