Hrs: 3

Alodine trim tab

Because the trim tab is already bent it’s to narrow to spray primer in the inside for corrosion protection. Although I don’t like working with hexavalent chromium, I decided to treat the trim tab with Aluprep 33 and Alodine 1201.

I purchased 1 quart of Aluprep 33 and Alodine 1201 from Aircraft Spruce in Germany and used 75 mm pvc pipe in an extra 110 mm pvc pipe as containers.

I used this procedure:
– 4 minutes in Aluprep
– rinse
– 4 minutens in Alodine
– rinse
– dry

Important note with these horizontal containers is to stir before use!

Final result: