![](https://fredread.com/wp-content/uploads/sites/2/2022/08/Spar-caps-ready-for-flange-drilling.png)
Day 19 – Horizontal Stabilizer Spar Caps
- Fred
- 0
- on Aug 26, 2022
Last night’s goal was to prepare the spar caps and stringers. I’m getting a bit bolder with the bandsaw and cutting closer. This means less filing and the work goes much quicker. I also came up with what I think is the ideal clamping method for filing down the angles on the caps.
![](https://fredread.com/wp-content/uploads/sites/2/2022/08/Bandsaw-cuts-looking-better.png)
![](https://fredread.com/wp-content/uploads/sites/2/2022/08/Better-clamp-system-for-filing.png)
With the caps ready for drilling, I lined up my 1/4” marks with the holes on one side and clamped everything into place. Once secured, I ran a drill through every 1/8” hole in the spar web that was common with the caps. Unlike my screw up on “Day 1”, this time I was smart enough to not ALSO drill 1/8” holes in through the flanges! Lol
![](https://fredread.com/wp-content/uploads/sites/2/2022/08/Setting-up-for-match-drilling.png)
![](https://fredread.com/wp-content/uploads/sites/2/2022/08/Line-up-one-side-for-a-perfect-rivet.png)
![](https://fredread.com/wp-content/uploads/sites/2/2022/08/Match-drilling-in-progress.png)
![](https://fredread.com/wp-content/uploads/sites/2/2022/08/Wont-be-fooled-when-putting-this-back-together.png)
With all the holes drilled and all the parts deburred and cleaned up, I clecoed everything back together. The next step will be to drill the flanges.
![](https://fredread.com/wp-content/uploads/sites/2/2022/08/Spar-caps-ready-for-flange-drilling.png)