Brief Description: Dimpled VS and started countersinking the doubler
So my latest conclusion on countersinking is that a dimple will not sit flush in a countersunk hole prior to riveting. If it does there will be too much play in there. I went approx. .005 past flush as the directions say and they do turn out flush after you rivet them. That only took about 2 hours of VAF research to figure out.
