DEC beige/creame/white paint

On 1/11/07, dwight elvey <dkelvey at hotmail.com> wrote: Phosphoric acid, usually buffered is sometimes a prefered pre-treatment prior to primer. The old metal guys would call this galvanising. Idea is to wipe it on, and wipe it off before it drys and to not let it leave a white residue. This will eat tiny rust and leave a surface thats rough and resistant to rusting for a few days, weeks, months while you prepare other areas for primer/paint. Note that some primers claim to be incompatible with this treatment. I use a lot of this, Keep it in 5 gal buckets so I can dip parts in it. You can get it at most paint stores and HD in gallons for not a lot of $. Beware not to use any acid treatment on hightly stressed items for which your life depends on it. The End-Rust conversion coat stuff (tanic acid based I think) is ok for floorboards and iron workitems but I would not recommend it for something like a computer cabinet. where you want appearance or you are trying to acheive a high level of restoration "fidelity". One last tip, for aluminum items never use a steel wire brush, steel wool or sand paper made from aluminum oxide on the surface. Tiny fragments will embed in the metal and start a corrosion process. The corrosion treatment process prior to primer is usually done with either an etching primer or a Alodine metal salt conversion process. Jay for that textured coating, I am not sure how they did that but expect it was something in the paint mixture that dried at one rate while something else dried at another. I do know of one project where the first coat set up the pattern and then the 2nd & 3rd coat was the color. That finish is an industrial one that replaced wrinkle paint (aircraft panels) and hammertone finishes for surfaces that would be handled and it was desirable to hide damage and dirt. you might be able to simulate the cottage cheese effect by spraying a coat of primer and then using something to texture it and then let it dry, some experimentation with a $2 can of primer and some coated cardboard might yield a method. Things like saran wrap, sponges, pizza crust (!) might make good patterns.