Alternative to Bright Dip Anodizing Trim

Good info and entertainment. He's been known to pull the old switcheroo also
1968 Barracuda Trunk Trim Restored by PartsMonsta
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I hope it’s not a stupid question but could you just put a polishing wheel on a bench grinder? Is that too fast or slow? I’m confused on why there are bench grinders and bench polishers. They seem the same to me except the wheels.