Brief Description: Finish Countersinking Top of Front Spar
I finished countersinking all of the holes on the top of the front spar for the main skins today. I used my little countersinking jib clamped on the inside of the flange to allow a sufficient guide for the countersinking pilot bit. Once all of the holes were countersunk, I used the 90 degree drill attachment with the lowest pressure setting to debur the inside of the top flange.
Countersink top of front spar for main skins
Top of front spar complete; countersinking tools
Debur top inside flange of front spar using 90 degree drill
