Prepping and Alodining

Spent tonight cleaning all of the stiffeners, spars, ribs, bits and pieces of the rudder using metal prep and then alodined them all, ready for a coat of primer.
Also, decided to order another R-710 Rudder Horn Brace as the edge distance ( distance between the rivet holes and the edge of the material ) is too small. It should really be 2 rivet diameters from the center of the hole to the edge of the material ( 3/16 of an inch in this case ).