Tonight, I completed all the dimpling of the #40 holes in the Top Inboard and Top Outboard Wing Skins. I used my hand squeezer with a 3” yoke to dimple the holes I could reach. Then, for the remaining holes, I used the DRDT-2.
Here is the Top Inboard Wing Skin after being dimpled by the DRDT-2.....
.....and the Top Outboard Wing Skin.
And of course, the two Skins with all the #40 holes dimpled.