Today, everything I had clecoed together yesterday got unclecoed, all the edges and holes had to be deburred. Next operation will be to dimple and countersink everything as the forward side of the will be flush.

Today, I begun working on the firewall. There is a total of 27 parts to be installed (and I did not install the fuel pump doubler). There are only a few parts to fabricate, among them to angles cut from some angle stock. Here are the raw angles:



After almost one hour of cutting and grinding, here they are finished.



The angles need to be 3/32" from the bottom of the firewall, I used my reamer to mesure this and then backdrilled all the holes.



Here is the firewall with everything installed, all the holes have been back drilled.

The fuselage is of "monocoque" or "stressed skin" design, meaning the rigidity is obtained by assembling the skins onto bulkheads and stringers. The first task is to fabricate all the bulkheads, from the firewall in the front to the last one in the tail. I needed a good part of the afternoon to locate all the bits and pices scattered around the workshop. On the first picture all the bulkheads, except the firewall which is on the second one.