also im mkiv forum gabs sowas erst für vergilbte plastik scheinwerfer...
die bilder sind ja glaube ich nicht so wichtig, da es ja eh nur bilder einer supra sind.
vielleicht hilft dir das ja was, falls es anders nicht geht....
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auszug von mkiv.de
Für alle, die mit vergilbten/angelaufenen J/US-Spec Scheinwerfern rumfahren. Stammt im Original vom User 19Green97 aus dem US-Forum.
Get your supplies together.. masking tape, 2000 2500 3000 grit if you'd like. bucket of water, plastX polish.. and microfiber cloths.
Mask off the light take your time, if you sand your paint you will hate yourself.
Soak the paper for at leats 15 mins. Then start with your lowest grit, sand in 1 direction only.
Dry it, and it'll look terrible because you just scuffed it up, but don't panic.
Keep your paper WET!!! frequently dip your hand and peper in the bucket of clean water to ensure it stays soaked and your working surface stays soaked.
Sand in the other direction this time, if you went up and down, now go side to side. KEEP IT WET!!
Dry it, looks a little better this time from the finer grit paper.
Repeat that step until you get to your highest grit, sand in opposite directions every time.. Once you reached your highest grit, remove the tape - or you can wait until after the next step to remove it, I chose to remove it now to avoid having particles stick to my hands and screw up the lens while I hand polished.
Apply Scratch X by hand, or cloth which ever you prefer. be generous it's going to come out nice.
Using microfiber cloth, rub off .. repeat several times with FRESH rags until the scratchX is dry and gone.. it has diminishing abrasives.. if you dont do it until it's dry it wont do much.