When polishing epoxy, it's all about removing all the scratches. First, you need to remove the coarse scratches. For example, if you have sanded with 60 grit, you need to sand with 120 until all the 60 stripes are gone. Then you need to go to 240 to remove the 120 stripes. Continue like this by doubling the grit for each round of sanding, preferably up to 3000 grit. Then you move on to the " coarse polish" below. Apply to a rag or machine and go for it! Polish until you are satisfied, or take it a step further with the " fine polish " for extra gloss!
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