Once I completed the antenna holes, I removed the bottom skins for deburring and dimpling.
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_0129028092431879086125497642.jpg)
Hannah helped me remove the vinyl along the rivet lines.
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_014424619824166160744022058.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_0241057944794551116510120966.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_0300325463058156312184242055.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_034707589563484792005656500.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_0347127717364056150866109195.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_0401315918915658944292417449.jpg)
Lots of holes to deburr. Lots of holes to dimple.
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2207063923849238811205157524.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2207100862301608646794510638.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2214009433770582479414695655.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2240457442154153829321311120.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2240518442299549499585274698.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2311528291510348143933156734.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2311587653508339778428080118.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2312197467930069417731571914.jpg)
I then dimpled the corresponding holes on the bulkheads and ribs.
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2146593654804137074628469848.jpg)
The holes with rib tabs behind the bulkheads are countersunk as there are two layers there.
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2147055185077161812711683825.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2147365327930261122082888547.jpg)
The holes on the aft bulkhead assembly are also countersunk.
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2147116701620042474633708927.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2021/06/pxl_20210618_2147307736093027692892380309.jpg)
Done. More parts ready for priming and riveting.