Stacking of outer spars

Finished with dimpling and priming the mating surfaces of the vertical tail. Can't rivet the skin before Lasse has been here. Started stacking up the main outer wing spars just to understand how it is going to be. I wonder if I got enough long clecos to do this. Also the main webs was very water stained, probably during transport or storage at Sonex (Indoor in Norway the humidity is way too low for any water staining). Water staining is the most common kind of crevice corrosion in aluminium. Water staining will make the aluminium even more corrosion resistance, but it also makes it harder to get coating to stick.

Ordered a bunch of CherryMax rivets for the ribs on the Horizontal tail, the spar and aft rivets will be solid. There really is a huge difference in diameter of the holes that are drilled with #30, deburred the "old way" and dimpled and the ones that are drilled with #31, deburred the correct way and dimpled with the "tuned" dimple dye. Dimpling is a much more straight forward process when using solid rivets.

Also ordered i Christmas gift from my wife, a Drill Doctor 500X from ACS Germany. It seems to me this 6061 T6 is much harder on the drill bits than 2024 T3. When I get this Drill Doctor I will always have super-sharp drill bits which is the most important thing regarding hole quality and to minimize burrs. The 500X will sharpen anything, high-speed steel, cobalt and TiN.