Rust

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 *What grit sandpaper to use when removing rust from body panels?
 *Holes must be cut out, and new metal welded in.
+*Using straight hydrochloric acid or muriatic acid requires that it be properly neutralized (how to do this?), otherwise there is a risk of hydrogen embrittlement causing cracks in thinner areas of sheet metal.
+*The iron phosphate coating that's left behind by rust converter is a fine base for primer.
 *To remove rust, wire brush, or wire wheel the area. Also: [http://solutions.3m.com/wps/portal/3M/en_US/Manufacturing/Industry/Product-Catalog/Online-Catalog/?PC_7_0_4UVL_root=GST1T4S9TCgv&PC_7_0_4UVL_output=html&PC_7_0_4UVL_gvel=H55CPWS904gl&PC_7_0_4UVL_vroot=81LC4NNTD4ge&PC_7_0_4UVL_node=RCM96XTX07be&PC_7_0_4UVL_theme=en_us_manufacturingindustry_portal&PC_7_0_4UVL_command=CustomizePageHandler 3M clean & strip disc], or [http://solutions.3m.com/wps/portal/3M/en_US/Marine/Home/Products/Catalog/?PC_7_0_4S4T_root=GST1T4S9TCgv&PC_7_0_4S4T_output=html&PC_7_0_4S4T_gvel=RJ5GMFSMV0gl&PC_7_0_4S4T_vroot=GS4JK4Y166ge&PC_7_0_4S4T_node=GSGKXWRKYVbe&PC_7_0_4S4T_theme=en_US_marineproducts_portal&PC_7_0_4S4T_command=AbcPageHandler 3M bristle disc]
 *POR-15 shouldn't be used on parts that will see direct sunlight -- it's color will change (although it won't lose its anti-rust capabilities).

Revision as of 14:59, 24 April 2007