Sheeze! I am stinking worn out. I deburred what seemed to be thousands of tail cone holes. And I still have two top skins to go. An also, to think I'm using a battery powered screwdriver to run the deburring bit. I did all the holes in the -6 and -8 by hand and it didn't seem like this much work. Thank goodness I still have a case of Spotted Cow. I'll finish tomorrow, just in time to start dimpling. No more whining.