Aug 18 (edited) • ❓ Q&A / Troubleshooting
The magnet test (and why it saves pieces)
Before you touch any piece with sandpaper, grab a magnet.
Aluminum and brass: Won't stick, they're non-ferrous.
Stainless: Depends on the grade, some stick, some barely do.
Here's the one that matters most: if a piece looks mirror-bright already and you're not sure what it is, assume it could be chrome plating over steel until proven otherwise.
Why it matters: chrome is a coating a few thousandths of an inch thick. Sand through it and no compound on earth brings it back. That piece needs re-plating, not more polishing.
A two-second magnet check plus a close look at the plating condition has saved more pieces than any technique I know.
What's your pre-sanding check routine? Drop it below 👇
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The magnet test (and why it saves pieces)
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I don't just teach you to polish metal! I teach you to build a $10k/month polishing business!
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