Unless you have 3 hands or an assistant, you'll need a nose rib assembly jig. See photo 1. The jig is simply two pieces of 1 inch spruce band sawed to the shape shown and screwed together at right angles.
The jig is clamped to the wing spar at the nose rib position and the nose rib is then clamped to the upright portion of the jig. See Photo 2. Once the nose rib is clamped in position it's an easy matter to nail the rib in place. I use a spring clamp on the wing spar and a small "C" clamp on the rib. Check the rib angle to the spar with a small square before nailing.
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