Flakes of rust will be on the ground under the fence the day after you apply it. I am aware the sodium bicarbonate will have to be neutralized as well, but am expecting the wax and grease cleaner I wipe the vehicle down with with take care of that, (although I intend to confirm this first and not "hope for the best"!) Anything steel that is treated with ANY product containing phosphoric acid MUST be neutralized before any primer or paint can be applied. Once the Ospho is mixed you can begin applying it to the metal surface with a brush. Synthetic paint brushes offer more versatility and can be used with all paint types. Ospho - Miller Welding Discussion Forums apply whatever paint. Thanks Ted. Scrub it in with the scrub pads, then wipe off the excess with the towels, and let it sit 24 hours. Did the cold galv you put on your trailer stick? A paint job will last but don't want to lose the beauty of the pat 100% cotton is important. What should you do if you get Ospho on your skin? Once the Ospho is cured you will notice a blackened finish on the metal surface. OSPHO penetrates deep inside of the metal's pores to convert and loose powder and wipe down with Mineral Spirits before painting. So something to consider when you are using acid products before epoxy . The Ospho Solution..(rust removal) | Hot Rod Forum Longer dry times may occur depending on temperature, humidity, and over-application of product. For the life of me I cant Rember the name, but I'll get it and be back.. Hold the can about ten inches (25.4 cm) away from the metal and spray in even short strokes. then apply paint. Applying the new coat of ospho "reactivates it" and allows you to remove it. I am seeking advice on how best to neutralize the phosphoric acid. It's important, however, to understand the quality of pipe you're buying. I'm building a pipe corral and fence with horse wire attached. bars-metal applications but can be used painted surfaces as long as the Q. I built a piece of equipment using regular mild steel plate and standard structural angles and square tubing. how to apply ospho to pipe fence I've read that orthophosphoric acid can be used to 'profile' galvanized metal. Can I rinse and clean the treated steel with water followed by a thorough wipe-down with denatured alcohol to rid the steel of the Phosphoric acid contaminant and then apply the 2 part epoxy primer ? When applied to rusted surfaces, it resists/retards rust in chemical change on drying to a tough, hard surface ready for priming.

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