The holes for fabric rivets in the top and bottom wing rib caps were drilled with a 1/8" (#30 actually) drill. The locations were duplicated from previous wing and are detailed in the March 26, 2017 and April 2, 2017 Blog entries. We also drilled 1/4" drain holes in the bottom inboard trailing edge of the wing. Nine drain holes were drilled, each was located 1/2 inch from edge of rib cap, and 1/2 inch from front side of trailing-edge. Hours: 3
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| Drain hole |
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