How Long Does Sandblasted Ironwork Last Before It Rusts Again?
Bare sandblasted ironwork can start to rust again in as little as 30 minutes to 4 hours in damp or humid air, and usually within 24 to 48 hours even in a dry, covered workshop. That surprises most people. Sandblasting does not protect metal. It strips the metal back to a clean, chemically active surface
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