Install W2, W3, W4, and W6. It is a good idea to dry fit these first to familiarize yourself with their orientation prior to gluing.

NOTE: Although not shown here, it is recommended that a scrap piece of balsa be glued over the rectangular cut out in rib R3 (circled above) to prevent glue from running into the interior of the wing when the panels are joined together.

Install the 1/16" balsa wood cap to the bottom main spar at this time as well. (not shown)

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