I deburred the skin inside and out, then scuffed the inside with Scotchbrite to prep for dimpling. I used the squeezer to dimple the stiffeners and as many holes on the skin as I could reach. I set up the C-frame and completed dimpling the skin. Was very cold outside today so I washed the parts in our shower with Dawn dish soap and warm water, then put the out on our bed to dry. Thanks to my understanding wife!