I riveted my first set of stiffeners to tank skin last night with tank sealant. I used tank dimple dies on the skin and ribs, applied a tiny dab of sealant to the dimples, inserted the rivets and back riveted them as recommended in the instructions. After removing excess sealant I found that virtually all the rivet manufactured heads protrude about 0.010 inch above the surface of the skin. Did anyone else have this problem? I checked them before applying sealant with a dry rivet and they were flush. I'm trying to decide whether to drill them out or just build on. My empennage skin rivets are all nice and flush. You can hardly feel them if your run your hand across the surface but these are clearly proud of the skin surface.
John H.
RV7A building wings
www.johnsrv7a.wordpress.com
John H.
RV7A building wings
www.johnsrv7a.wordpress.com