Brief Description: Dimpling the bottom of the trim tab hinge spar.
The bottom of the trim tab hinge is dimpled normally since most of it will be riveted with the normal flush rivets. The last few will need to be blind rivets so I did countersunk holes in the last part. Probably not right since I would still need a dimple in there anyway, blind or not. I thought about this later after I did this. Probably just made a weaker hole with a thinner spar area to rivet in. I'll probably cut out a small baking plate and put behind this when I blind rivet this in place on the skin. Just another very small modification to go in place of one of my ideas that later didn't seem quite right after all.
I then used the blind rivet device to reach the unreachable holes in the skin. This tool works MUCH better on thin skin than it does on ribs I found out the hard way.
Don't try deburring a countersunk hole. Don't - unless you want a bigger hole.
Not sure if this was so good after I did it, but can easly be fixed.
