All the ribs for the wings, fuselage and empennage are hand formed over ply wood formers, having an A0 plotter I can print of full size drawings, check the scale and glue straight onto boards, cut out, sand, then cut the ally to shape and hammer away.
The spar caps are 3mm 2024 and I designed them to be inherently straight 1" strips tapered at the outboard end, but in hindsight this was a mistake as it required complex root attachments and simply to have guillotined tapered strips with something closer to a 1 3/8" thickness at the root to allow diameter for the bolt to pass straight through would have been much simpler, updated for any future models.
