Preping surfaces to cover

[pequeajim]

I am covering my ailerons with the Poly-Fiber method.

It says to wash all the aluminum parts with Poly-Fiber E-2310 Phosphoric Acid
Etch and Brightner with a Scotch Bright pad.

Then wash with the E-2300 Conversion coating.

Then prime with Poly-Fiber EP-420 Epoxy Primer.

Then I can start to cover.

Is all of this necessary?




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