alumiprep mixed to 1:4 -- sprayed each part, used scotchbrite to rough up surface.
alodined rudder skeleton. small parts were dipped, larger parts were brushed.
made a giant mess by spilling a gallon of AZKO primer in the backyard. while i like the idea of using this industry-standard primer, i dont want the big hassle -- especially for internal parts that nobody will ever see. rattle-cans on the way.