Short session tonight on the MID Lower Structure. I started today’s session by doing a little work on the F-00016-L & -R Step Attach Weldments. First, I countersunk the eight holes (for the nutplate rivets) for an AN426AD3 rivet as shown below in the plans excerpt. (The F-14145-L & -R Step Attach Angles were previously prepared). Second, I final-drilled the four holes holes shown below to 1/4”.
Since I also like to prime powder coated parts.....Lastly, I scuffed the two pieces with grey scotchbrite and primed them with Akzo. Here’s the two Step Attach Weldments after the primer dried.
That’s it today for the MID Lower Structure. During the next session, several pieces with begin to get riveted together.