The Comeback Trail.
The firewall was epoxied back in place, but there were some voids. A small batch of epoxy mixed with saw dust was spread into the voids with a credit card, then covered with clear packing tape. After curing, the tape was peeled off and a little bit of Bondo was used to fill any low spots that the epoxy wood dough didn't.
After sanding the repair back even with the surrounding wood surfaces I misted some 3/4 oz cloth with 3M77 and applied it to the circumference of the firewall to help strengthen the balsa fuselage sides. With a latex gloved finger I spread medium CA over the cloth then let it air dry. It takes very little CA to saturate the cloth, but the photo reveals a small spot that I missed.
Next, I'll dowel the firewall with round toothpicks into the balsa tri-stock behind the firewall. That seems like an easy and lightweight thing to do.
