Rust, pitted
(→Removal with heat) |
Metalmeltr (Talk | contribs) (→Handling rust pinholes) |
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Then, these methods have been mentioned ''(confirm)'': | 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. | *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 | + | *Drilling and patching |
| + | Drill a hole though the pin hole that is just large enough to remove the jagged edges of the rust hole. If this hole is smaller than 1/8" just fill the hole with weld material. If the hole is bigger than 1/8" and smaller than 3/8" get a nail that the shank will fit though the hole but that the head won't. Remove any coating from the nail. Put the shank though the hole from the back side. Hold the nail's shank while welding the nail to the panel. Be sure to hold the nail tight against the inside of the panel. After the weld has cooled cut off the shank of the nail and grind the substrate smooth. If the hole is bigger than 3/8" it is time to begin cutting out larger areas of metal and welding in new sheetmetal. Before you start any welding process make sure to apply weld though primer to provide proper protection from future rust. | ||
*Solder Flowing can be done with specially formulated flux and solder combinations at temperatures as low as 350 degrees Fahrenheit. | *Solder Flowing can be done with specially formulated flux and solder combinations at temperatures as low as 350 degrees Fahrenheit. | ||
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