12/31/2020 – 2.1 hours I started riveting the front spar, doubler, and spar caps with the rivet gun and bucking bar for additional hand riveting practice. This went well, and I feel much more comfortable with the gun and bucking bar. My bucking arm started to get tired after a couple of hours, and I decided to switch to the pneumatic squeezer to finish the job the following day. I had one rivet near the end where the bucking bar came off the rivet and made a stair-step pattern down the shop head. That rivet was successfully removed and replaced with one set with the pneumatic squeezer. [3X Rivet Gun, Tungsten Bucking Bar, 1/8” Cupped Rivet Set, C-Clamps] 1/1/2021 – 2.3 hours Happy New Year! I finished the front spar riveting before the New Years football games started. I set up the pneumatic squeezer to set the remaining AN426 and AN 470 rivets in the assembly. I worked from the center of the assembly toward each end with good results. The primary complicating factor of this step is keeping track of the 5 different rivet lengths/mfg heads. The rivet schedule only shows half of the rivets, since the other side is a mirror image, and it pays to take your time and make sure you are using the correct rivet called out for each hole. There are also several holes that do not get riveted yet, and those were marked off with tape to help keep everything straight. [Pneumatic Squeezer, 1/8” Flat Squeezer Set, 1/4" Flat Squeezer Set, 1/8” Cupped Squeezer Set]