Big thanks to aaronrdaniels for his hard work on the logos (Bambu Lab Logo 95% Accurate Re-creation by aaronrdaniels | Download free STL model | Printables.com)
Big thanks to Duane for the original (X1 Screen Cover V2 by Duane | Download free STL model | Printables.com) very attractive and very well fitting.
Instead of a piece of filament for the hinge pin I revised the holes for a 3mm socket head bolt, I used a 16mm long since it was all I had at the moment. 8, 10 or 12 will work and there's plenty of room. I used a 3mm tap for the flap holes but didn't tap the last couple of threads needed so the bolts would be self-locking.
The flap prints face down just fine on the cool plate, just make sure the glue stick coating is even for a smooth finish.
I wasn't after speed for this, feel free to adjust whatever you want or need to.
Enjoy!