[R-390] White lines on knobs and more

[Larry H]

Thanks John,  Good to know about your new method.  I was wondering, how do
you clean and deoxidize the aluminum in prep for the dip?

Regards, Larry

On Sat, Sep 7, 2019 at 9:52 AM John Gedde <jgedde at optonline.net> wrote:

> Hi Larry,
>
> It looks great!  I have moved away from using a spray primer on aluminum
> prior to paint in favor of a chromate conversion coating.  Loctite
> Bonderite is what I use.  It's what we use at work for spaceborne
> mechanisms that get painted or aluminum surfaces that remain bare
> (non-anodized).  I've never had any issues with adhesion using this stuff.
> Basically you clean and deoxidize the aluminum, dip it in Bonderite for a
> minute or so, rinse and let dry.  The aluminum turns a golden color and
> paint readily adheres to it if you spray within 24 hours.  The coating is
> also known by other names: ChemFilm, Alodyne, Iridite, etc.
>
> John
>