Over the last two nights I deburred the side skins for the aft fuselage. I spent probably two hours total time, including a few minutes to remove the vinyl on the exterior side. I used an oversized drill bit to debur the holes, which I found more effective than using a countersink bit.
![](https://i0.wp.com/mytwings.com/wp-content/uploads/2020/04/img_5146.jpg?resize=648%2C851&ssl=1)