The Aft Fuselage Longerons (F-01418B-L & R) are much thicker aluminium which means thicker edges to smooth. Additionally, when these pieces were cut, the cuts weren't very clean.
As a result, I had to
- file all the edges with a coarse file
- file all edges with a fine file
- finish off the edges on either the Scotchbrite wheel or use a Scotchbrite pad to give it that smooth polished finish
This first image, I've used the coarse file on the near edge, but the far edge is untouched.
This has had a go with the coarse file, then the fine file and then the Scotchbrite to see how it polishes up. If you zoom in you can see there are still visible scratches from the coarse file. I would then have another go with the fine file and the Scotchbrite pad again until no scratches are visible.
The near side is slightly out of focus, but the far side shows a smooth edge.
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