1 The ratings in this comparison are based on the same water source.  The date the company started: Water ionizer technology is constantly changing. Life's 13 years of experience puts them on top of the latest technologies for making the best ionizers on the market.
Self Etching Primer For Aluminum. Self Etching Bare Metal Primer. â¦Aerosol Cans or Economical quarts and gallons This easy to use primer etches and primes bare, rust-free metal in one step. Adheres to steel, aluminum, stainless steel, and galvanized steel and is compatable with virtually any paint or auto finish. The aerosol self-etching formula bonds better toâ¦. Starting at: $13.49.
Self etch primer is for metal that has not been etched by some other means. So if you are building a something and weld up some brand new sheets of the steel and do not want to sand them you use the self etch primer. The job of self etch primer is to make a good surface for putting the next layer of paint on to the metal. If the metal is already a good surface for a direct to metal paint then you do not need (and do not want) an etching primer. The etch primer has been improperly thought of as a way to prevent corrosion.