| 1. | Sanding, even with very fine sandpaper or emery cloth, could leave marks.
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| 2. | I polished the joint with succeedingly fine grades of emery cloth.
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| 3. | As a last resort, try sanding with very fine sandpaper or emery cloth.
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| 4. | Start by cleaning the end of the pipe carefully with the emery cloth.
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| 5. | Smooth it out by rubbing with emery cloth, a fine sanding and grinding substance.
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| 6. | Rub off the rust with emery cloth or super-fine sandpaper.
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| 7. | Or, sand it off to the bare metal with fine sandpaper or emery cloth.
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| 8. | Try steady, overall hand-sanding with the finest sandpaper you can obtain, or emery cloth.
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| 9. | You can smooth it off with emery cloth.
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| 10. | Rubbing with emery cloth may reduce the pockmarks.
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