Rust, pitted
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[[Image:blank.jpg|right|thumb|350px|A classic example of pitted rust. If you have this image, or can take the necessary photograph, please [[Special:Upload|upload it to the wiki]].]] | [[Image:blank.jpg|right|thumb|350px|A classic example of pitted rust. If you have this image, or can take the necessary photograph, please [[Special:Upload|upload it to the wiki]].]] | ||
| − | Pitted rust is a common problem when dealing with body panels. | + | Pitted rust is a common problem when dealing with body panels. The "best" way to deal with it is generously cut it out, and [[replace the area with new metal]]. However, this isn't always practical, so it's frequently handled by mechanically and/or chemically removing the rust, "filling" the pitted areas with a purpose-specific product, and priming. |
==What causes pitted rust== | ==What causes pitted rust== | ||
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==How to fix pitted rust== | ==How to fix pitted rust== | ||
| − | + | Ideally, any pitted rust is cut out and replaced. Few situations are ideal, so it's common to remove the rust, fill the pits, and then prime with [[epoxy primer]]. | |
===Removing the rust in the pits=== | ===Removing the rust in the pits=== | ||
| − | First, all visible rust must be removed | + | [[Image:blank.jpg|right|thumb|350px|Rust removed from pits. Now the bare metal needs to be cleaned and filled. If you have this image, or can take the necessary photograph, please [[Special:Upload|upload it to the wiki]].]] |
| + | First, all visible rust must be removed, using one or more of the methods listed below. | ||
====Mechanical removal of pitted rust==== | ====Mechanical removal of pitted rust==== | ||
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====Chemical removal of pitted rust==== | ====Chemical removal of pitted rust==== | ||
| + | *Let naval jelly sit on the area, overnight if possible. Cover it with plastic wrap to keep it from drying out. | ||
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| + | ====Removal with heat==== | ||
| + | *Heat the pitted area until it glows, then cool it with oil on a rag. This fix should only be used on small areas, because it can warp the surrounding metal, causing wrinkles and shrink marks. | ||
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| + | ===Filling rust pinholes=== | ||
| + | Rust pinholes can be difficult to repair because the "hole" is usually more like a "crater". The hole itself is at the bottom of a thinned-out craterlike area of metal. | ||
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| + | First, remove any rust, using the above methods. | ||
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| + | Then, these methods have been mentioned ''(confirm)'': | ||
| + | *Clamp a piece of copper to the other side of the panel, covering the pinhole. Then, fill the hole in with a MIG welder. When done, unclamp the copper -- it won't stick to the panel, and will act as a heat sink, so the panel doesn't warp as much. | ||
| + | *Drilling and patching -- explain. | ||
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==Additional resources== | ==Additional resources== | ||
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