Brief Description: Rudder - Dimpling the tight spots
To dimple the narrow spot on the rudder ribs I used the 1/4 inch bar with a 3/32 hole and #40 countersink. I put a rivet in the rib hole and into the 1/4 bar hole and hit it with the rivet gun. This made the dimple. I have not yet filed off my hand held dimple squeezer, because this method works fine on tight spots near the trailing edge.