Image 1 shows me (who else?) match drilling the Inboard Bracket to the Inboard Rib. The standard "jobber" length drill bits are just too short and the 12" drill bit also allows me to drill inot the tight coners. Images 2 and 3 show the ribs, inboard and outboard brackets cleco'd together on the bench. I bought some 3" x 3" aluminum angle to hold the ribs square to the bench and used my rafting square to get the aluminum angle sections square with each other.
Match Drilling the Inboard Bracket to the Inboard Rib
Ribs, Outboard and Inboard Brackets, and Mounting Plate on the Bench
Ribs, Outboard and Inboard Brackets, and Mounting Plate on the Bench
