The remaining spots where not paint. The platter was corroded under the paint. And at this point the nightmare started. I tried various metal polishes, lots of elbow grease. Nothing helped, the platter got better, looked shinier, but the countless spots remained.
As I didn't have too much time, the platter went to the storage in the cellar, a week or so later I started to polish again. That procedure repeated several times.
One weekend I did another search on Google: "aluminum cleaning". Various tips and recipes turned up. Like using a mixture of salt and vinegar to polish. Serious.
One of the recipes was using lemon juice. I gave it a try, like the salt and vinegar thing before. I realized that at least something was happening. But not enough. In my desperation I tried a few things in combination with lemon. What worked finally, was the following:
Starting position
Rubbing the platter with a lemon half for a couple of seconds
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhShrsmINTg6MMvjHDdYXtBSDkQkCTcKQ01lBbjRCHkj3try61qSYUXfpwXVZRH2G20eahCMaKEZYys49-zOtdJvbMaKwgPPlTw8iAMuoeJqHAS9moiA0cLZ9rDzjpu6tREAOl6FvahcYkT/s320/IMGP2493.JPG)
results in this
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQlQ6q5aDNw8n0JSufpV_cyhEKQJX25W676vNhKQauDzTlX6DrqHUwiQAYBjt8c9F6bFsCwA45ijCkmWOyo5Ei5xOiXLgG4b0HP8TSfZvBELhu5DMnqvtm218xvhrZur3smt5r_gDsrhuh/s320/IMGP2494.JPG)
Now use a brass brush and loosen the corrosion:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9GfT2npvyttW_acMl5I89Qyi2qB5lTywdiP0XhI2sNItv7sWJCx5fmLMkWguh0b0V8CYyXuKdnIiFoD8hRMDGNBUvRrqHdo-NOvloaNqGq51ULKoL999vdIh3j1C46yEdzvXETMLmGrlm/s320/IMGP2495.JPG)
Which looks like this then, as a result:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6vBI98iLYvgvP30IDcYQMevtLYNtO1RAIqG5VTE02qnv7KAdmHqhqv2VGmjzPdv2x3fiNKuZZ_jGFO6mYPruIsJjjpjqoLQ7v7DY_Rv2UUpE_Obr_B7AXvcEYYT8qsFzhQjxCqgUWA9qy/s320/IMGP2496.JPG)
Don't try to weep the platter clean now, as the lemon juice is too dry and you'll just rub the loosened corrosion back into the metal. Use the lemon again for a few seconds
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjKu-3Wni-U-7ZbUF_TiLHoTStON5V0vzpSmKcnb91le3C0A4SJvf8iW75DR_MqNlGqaSx27uTAq51QBzYEJs-9Cj-9g8hMHdz2MaJlbb-T0aWpvSF9Srg7ncc2mDqOK0gOow2faYh8N74i/s320/IMGP2497.JPG)
and then quickly wipe the juice and the corrosion off with a clean piece of cloth
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCri0zHjlS2nKOEiFpJV1lGtyCIv4Hxk9BegcUh_NvhefveGoHRY-abSi-89-4BDwlE3l22me8DrNvBiXrEO9Ag6AHzEjSqTOiOZu0pdRq6tLDdnFepugTRc7xMCoL4Yo66lEyUTpHMVk-/s320/IMGP2498.JPG)
which gave me this result
results in this
Now use a brass brush and loosen the corrosion:
Which looks like this then, as a result:
Don't try to weep the platter clean now, as the lemon juice is too dry and you'll just rub the loosened corrosion back into the metal. Use the lemon again for a few seconds
and then quickly wipe the juice and the corrosion off with a clean piece of cloth
which gave me this result
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