1.2 hrs
Deburring main ribs. Finished the lightening holes on the main ribs and started on the flanges. Ate through 2 expensive scotchbrite wheels so far. That was using just the scothbrite wheel to deburr the inner holes. But I don't particularly like the results anyway. It takes just a little more time, and cleans up much better to use medium sandpaper, fine sandpaper, then the scotchbrite pads. Physically, the sandpaper is a lot more work.
Deburring main ribs. Finished the lightening holes on the main ribs and started on the flanges. Ate through 2 expensive scotchbrite wheels so far. That was using just the scothbrite wheel to deburr the inner holes. But I don't particularly like the results anyway. It takes just a little more time, and cleans up much better to use medium sandpaper, fine sandpaper, then the scotchbrite pads. Physically, the sandpaper is a lot more work.
But ordered more wheels, so those can be used for a final polish.
A small pile of ribs with flanges done, a large pile still to go. Then the tight spots need to be deburred.