“Using just a single Scotch-Brite product to remove all that mill scale and that rust and everything else to get a clean, weldable surface, zero rust.”

Matt King · The Fabricator Podcast · A welding instructor's mission to get more students into the trades

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What was described

replaced grinding wheels with a two-step surface preparation using a Scotch-Brite non-woven abrasive disc (and optionally sandpaper) to remove mill scale and rust before welding

16 coupons tested, 5% salt spray for 672 hours; grinding wheel rusted, wire wheel rusted, sandpaper+resin fiber+Scotch-Brite little rust, Scotch-Brite alone zero rust

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