Wings: Ribs. Deburring ribs made easy!

Here it is, the solution to all weight-saving hole deburring problems:  3M Scotch-Brite Fine-Finishing Sander.

Mounted in the drill press, it makes deburring the holes as easy as pie.  Already ran it through the main ribs.  Beautiful results.  You can hear the burrs coming off as satisfying audible "ticks".  This will make deburring the leading edge ribs go by so much quicker.

Then I will try 3M Utility Cloth Roll 314D for the little tabs and such.

Also, J-stiffener match drilling is complete as I received the replacement J-stiffener from Van's.