Depending on how stiff you want it, you can add some carbon fiber tow. I can cover that if you want. My parts may need it just for some insurance. It would be lighter this way anyway without going full on CF. More layers will make it more stiff but keep in mind that stiff mean that when it breaks, it is likely to be a catastrophic failure. You almost always want some flex.
I had a productive weekend so let's go over the mix of photos I have.
First up is the rough trimmed door. I put it back in place with the hole exposed. I properly traced the full outline of the door area and then drew a third line inside of that for the final shape of the door. I also drew the line where the two doors meet. I intentionally drew this one dead on so that I could sand to fit later.
Next I cut out the shape of the door recess and removed extra balsa. I also had to re-shape some of the ply underneath but the dremel made quick work of that. Just minor stuff. OI then cut the door to its mostly final shape and sanded the flat edge with my sanding bar. I just used scissors here. I cut on the outside of the marker and then sanded into the marker line for the final edge. Again, some shape work will still be needed.
What I did not capture in a picture is some initial hinge work. I printed out a couple of different one and settled on one but somehow is not looking right to my eye. More on that later when I get it sorted.
Next up we have some additional room in the fuselage beneath the battery tray. As mentioned a while back, I installed a piece of balsa here for the second resonator for the sound system. We have additional volume from this and it is tucked out of the way and forward of the CG.
As I will need more than the supplied 8 channels of the X8R, I received a S.Bus to PWM converter in the mail. This breaks out the S.Bus output of my receiver into all 16 channels (20 available on this unit). I started mounting these electronics as well as routing the wiring from some of the existing electronics. It was fun seeing the cowl flaps, oil cooler doors, wastegate valve, and the intercooler doors all working at once. Then I coupled that with the sound module. Good fun. Obviously there is a lot more to do with installation of more flying servos (Elelvator, Aileron, Flap, Gear, Gear doors, etc.) but it's a good practice to tidy as you go. I finally put the battery tray back in too. It still needs a proper strap but it's back in.