Sorry, no picture. long and tedious process as you must debur each holes from both side, then dimple. So one hole attaghing the skin, a reinforcement plate and a rib means that hole will need 6 deburring pass and 3 dimplings, and 1 rivet ! There are I beleive 15,000 rivets, that means at least 60,000 holes to debur and 30,000 dimplings to do at the very minimum.
