I have only needed to break the edges on overlapping sheets. Butted sheets, which I think yours are (sorry, no -14 plans but all the earlier models were like this), don't really need it. On my -6A, as I set the final row of rivets I used a large mushroom set and let it migrate slightly toward the butt joint at each rivet pair. I can find the joint with a fingernail but I can run my finger across it without snagging. Build on.
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Patrick Kelley - Flagstaff, AZ
RV-6A N156PK - Flying too much to paint
RV-10 14MX(reserved) - Fuselage on gear
http://www.mykitlog.com/flion/
EAA Technical Counselor #5357
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