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      02-22-2021, 05:33 PM   #2
IllSic_Design
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Drives: 09 E92 335i
Join Date: Jun 2016
Location: Northern California

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Check this thread out and ask the poster any questions; https://www.e90post.com/forums/showthread.php?t=1679614


Basically;
You'll smooth out any imperfections and scratches with sandpaper. Going from a rough grit gradually to a finer grit, like 600/800 up to 2000-3000 grit, then you'll use a polishing compound to get the mirror finish after the sanding, then seal them or clear coat them.