Since the bulkheads and the hull planks are joined together, now it's time to reinforce the inside part before turnnig the hull upside down. It's done by adding fillets of epoxy and flox on the inside corners and then adding one or more layers of fiberglass strips. The strips were cut in a way to make the fibers in a 45° angle, to increase shear stress resistance.
| Epoxy + flox fillets on the inside corners |
| Fillet in detail |
| Joint of a bulkhead, the bottom and the side plank. Zip ties covered by flox |
| Fiberglass strips cut in 45º angles |
| Hand Lay up of the fiber strips |
| Final result |