I had been stuck for a few days, as I didn’t have the right drill bits to finish enlarging the holes on the rear spar. I did have a 1/4 inch drill, but I really wanted a reamer. I reached out to my friend Murlin who offered to lend me some bits while mine were in-route from Aircraft Spruce.
Using a #C drill bit, and a 1/4 inch reamer, I drilled a perfect hole in the top right side of the spar. The bottom two holes were positioned such that I needed a longer drill bit to clear the aft fuse. Rummaging through my box of used tools, I found a 12 inch long 1/4 inch drill bit, and a 12 inch long 3/16ths bit. This was quite lucky! I practiced with them on some scrap to ensure they worked ok, then drilled two more great holes through the spar. Not as clean as the reamer, but close enough.
![](https://i0.wp.com/mytwings.com/wp-content/uploads/2020/09/img_6874.jpg?resize=648%2C462&ssl=1)
![](https://i0.wp.com/mytwings.com/wp-content/uploads/2020/09/img_6873.jpg?resize=648%2C480&ssl=1)
With the holes drilled, I bolted on the Horizontal Stabilizer.