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Success removing flaking enamel with needle scaler
(lemmy.world)
My enameled cast iron was leaving sharp little blue flakes around, so I decided it was time to take off the enamel. I tried a brass drill brush first, which only dislodged the loosest flakes. Then I got the cheapest Harbor Freight needle scaler ($40), and it worked great.
My small compressor couldn't really keep up, but working 30s at a time gave me time to grab the drill brush and clean up the exposed iron.
Washed, dried, seasoned, and ready for use. (I didn't bother with the lid, which isn't in as bad shape.)
Yes, N95, earmuffs, and goggles with side protection. The needle scaler actually sprayed the enamel chips around less than the drill brush though. Still a lot of glass dust to wash out of my hair though.