Matt’s RV7 Build Log

Tonight I researched whether to dimple or countersink the E702 for riveting the E709 rib in place. It seems even though the instructions explicitly state to countersink, most everyone dimples both parts because it’s much easier and in an inherently stronger bond.

• Dimpled E702 and 709
• Deburred E702 and 709 

Note 1: I cut my spare micro-countersink cage down so that it would center over the outside holes at the end of the 702 spar and still clear the flange. I didn’t end up using it as I decided to dimple this part instead. I am sure though this will come in handy on tight spots in the future. Note 2: The price of getting the cage cut down is that I most likely ruined my bandsaw blade.