Spent about 1/2 hour installing the rivets and bolts in the vertical tail aft spar. Spent about 15 minutes putting the bend in the skin. Used clecos through the aft edge holes to hold it. Put a towel on the table to prevent scratching, and a towel wrapped around a 2x4 to apply the pressure. Added a little hand pressure at the end. Spent about 2 hours making forming blocks for the tip ribs and hammer formed the tip rib and inner forward rib for the vert. tail. Will do the horz-stab ribs (same form blocks) later. It was good to work on some wood and pound on something.