I retired from civil service on Friday the19th, so today was the first day with airplane building being the primary job. Started off by scuffing all the baggage ribs and associated parts with scotchbrite. Dimpled the baggage ribs and attach tabs with the squeezer. Used the countersink to cut .007 deep on the F-704H panels where skin will rivet on. Washed all parts in warm water and Dawn dish soap and set out to air dry.