OK, the firewall is in!

Since this is such a critical part, because of the thrust angles, I like to make sure it's correct. I attached it with thick CA, but after it set up, the real strength is the tri-stock, which is applied with 30-min epoxy.

Now I have to put the tri-stock on the other half, and then it's time to match the sides. The real important part next is to join the rear end, and keep the sides tapered symmetrically. otherwise, it is a banana, which needs rudder offset to fly even close to correctly.

Don't ask me how I know...............................