Time: 6 Hours
I finished up the edge deburring of all 28 of the wing main ribs this morning. Whew it was a lot of work making sure all nicks and machine marks are all gone as well as scuffing all the surfaces. I decided to scuff at this stage as I found scuffing the flanges after fluting was more work.
Next up to straighten the flanges to 90° and flute them to make the ribs flat.