Finished deburring all the horizontal stabilizer parts and started into dimpling. Below is my C-frame dimpler. It has a 22" throat which is the exact size that allows you to access almost every hole in the skins of an RV. You simply place your correct size dimple dies in the upper and lower holders, align the hole in the skin with the dies, and give it a good whack with the hammer. Kinda like Whack-a-Mole, but Whack-a-Hole (for those not familiar with obscure arcade games, I added a video of Whack-a-Mole below).
This is what a dimpled hole looks like. Dimpling allows the rivet to sit flush with the skin. Making the outside of the airplane smooth makes it faster and much more fuel efficient. You wouldn't think that a small bump from a rivet would make that much difference, but at higher speeds, they add a lot of drag.
