If it's an inside curve, it will never look perfect no matter what.
I use black sharpies but allow the ink to dry first. We use a boatload of paper towels to inspect. Stay on the wheel about five times longer than you think you need. If you are using small tools, 15 times longer.
Glass is not glass. Polishing really varies from type to type.
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Where are we going and why am I in this basket?
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