Rust

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(Rust pitting)
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===Flap disc for rust removal?===
 
===Flap disc for rust removal?===
 
 
Scotch-brite wheel too. Need part numbers.
 
Scotch-brite wheel too. Need part numbers.
 
===Pitting===
 
Naval jelly and wire wheel, many iterations.
 
 
When done, sand with 80 grit, clean, and coat with epoxy primer.
 
 
  
 
===Vinyl tops===
 
===Vinyl tops===
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===Cavity waxes===
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===Cavity waxes (same as seam sealers?)===
 
3M rustfighter, Transtar's Amber Coating, Amsoil's HD. Transtar sells 360 degree spray head wand -- find this.
 
3M rustfighter, Transtar's Amber Coating, Amsoil's HD. Transtar sells 360 degree spray head wand -- find this.
  
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[http://en.wikipedia.org/wiki/Galvanization]
 
[http://en.wikipedia.org/wiki/Galvanization]
  
need more info on galvanization. done before primer.
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need more info on galvanization. done before primer in commercial applications.
  
 
===Vinegar===
 
===Vinegar===
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*Don't ever use battery acid (sulfuric acid) to remove rust. Very dangerous to work with, and harms metal.
 
*Don't ever use battery acid (sulfuric acid) to remove rust. Very dangerous to work with, and harms metal.
 
*To keep naval jelly wet, soak some fabric in water, and lay it on the naval jelly. Can work on an incline.
 
*To keep naval jelly wet, soak some fabric in water, and lay it on the naval jelly. Can work on an incline.
*What grit sandpaper to use when removing rust from body panels?
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*Don't sit in one spot too long with a wire wheel -- it will warp the metal from the heat.
*Holes must be cut out, and new metal welded in.
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*Using straight hydrochloric (same as 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.
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*Don't sit in one spot too long with a wire brush -- it will warp the metal.
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*The iron phosphate coating that's left behind by rust converter is a fine base for primer.
 
*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. These discs are considered superior to wire wheels: [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], or [http://solutions.3m.com/wps/portal/3M/en_US/Marine/Home/Products/Catalog/?PC_7_0_4S4T_command=AbcPageHandler&PC_7_0_4S4T_theme=en_US_marineproducts_portal&PC_7_0_4S4T_output=html&PC_7_0_4S4T_vroot=GS4JK4Y166ge&PC_7_0_4S4T_gvel=RJ5GMFSMV0gl&PC_7_0_4S4T_node=GSVDY2CZYDbe&PC_7_0_4S4T_root=GST1T4S9TCgv Surface Conditioning Disc]
 
*To remove rust, wire brush, or wire wheel the area. These discs are considered superior to wire wheels: [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], or [http://solutions.3m.com/wps/portal/3M/en_US/Marine/Home/Products/Catalog/?PC_7_0_4S4T_command=AbcPageHandler&PC_7_0_4S4T_theme=en_US_marineproducts_portal&PC_7_0_4S4T_output=html&PC_7_0_4S4T_vroot=GS4JK4Y166ge&PC_7_0_4S4T_gvel=RJ5GMFSMV0gl&PC_7_0_4S4T_node=GSVDY2CZYDbe&PC_7_0_4S4T_root=GST1T4S9TCgv Surface Conditioning Disc]
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*POR-15 is largely considered a "duct tape fix" or a "git-er-done" solution. It may be OK for the home hobbyist, but it's not considered the "right way" or the "professional way" to handle rust.
 
*POR-15 is largely considered a "duct tape fix" or a "git-er-done" solution. It may be OK for the home hobbyist, but it's not considered the "right way" or the "professional way" to handle rust.
 
*When using wire wheel on drill, when the wire bristles start to bend one way, reverse the drill and work in the other direction for a while.
 
*When using wire wheel on drill, when the wire bristles start to bend one way, reverse the drill and work in the other direction for a while.
*Brands: POR-15, Zero Rust, Eastwood Rust Encapsulator. These are NOT rust "converters", they don't alter rust, etc. There is a common misconseption that the ones listed are converters, but that is in fact false. They are a coating intended to seal out air and moisture.  
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*Brands: POR-15, Zero Rust, Eastwood Rust Encapsulator. These are NOT rust "converters", they don't alter rust, etc. There is a common misconseption that the ones listed are converters, but that is in fact false. They are a coating intended to seal out air and moisture. They are rust encapsulators.
 
*Another argument against rust "treatments" is that many of them require the surface to be lightly rusted first. "Inducing" rust seems wrong to people.
 
*Another argument against rust "treatments" is that many of them require the surface to be lightly rusted first. "Inducing" rust seems wrong to people.
*Rust-protection products can either act as a coating, or as a sacrificial anode (explain).
 
 
*If POR-15 and similar products have a "lifetime warranty", explain how guarantees like that don't involve labor costs, losses, or other related costs.
 
*If POR-15 and similar products have a "lifetime warranty", explain how guarantees like that don't involve labor costs, losses, or other related costs.
 
*One recommendation is: after sandblasting, remove some more of the surface metal by sanding with sandpaper. This is done to remove the salt, sand, moisture, etc. from the surface.
 
*One recommendation is: after sandblasting, remove some more of the surface metal by sanding with sandpaper. This is done to remove the salt, sand, moisture, etc. from the surface.
*After preparing panels, coating them with epoxy primer is recommended.
 
*Phosphoric acid or muriatic acid are recommended as well.
 
*Rust forms so quickly that if you are sand blasting, media blasting, etc., the surface rust will begin to form before you finish the job.
 
 
*Molasses is thought to work, but takes a while. 1 part molasses to 10 parts water.
 
*Molasses is thought to work, but takes a while. 1 part molasses to 10 parts water.
 
*To remove rust: Comet/Ajax with Scotch-Brites, and then muriatic acid with scotch-brites, and then rinse and wash with Comet/Ajax again to neutralize the acid.
 
*To remove rust: Comet/Ajax with Scotch-Brites, and then muriatic acid with scotch-brites, and then rinse and wash with Comet/Ajax again to neutralize the acid.

Revision as of 15:51, 23 June 2007

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