Removing paint from cast iron?

Discussion in 'Cooking & Water Purification' started by NattyBo, Mar 19, 2019.

  1. NattyBo

    NattyBo Guide

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    I have a cast iron kettle that was painted black. Is there a way to strip the paint and have it safe to cook food in? I've stripped tons of furniture and have several commercial strippers like Stripeze and Citrastrip. Can I burn the paint off, hoping it's not high-temp?
    I'd really like to use it, it's a great little size and has the number 4 on the bottom.

    Thanks for any help!
     
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  2. CSM1970

    CSM1970 Guide

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    I don’t think a propane blowtorch would hurt it. Keep it moving so as not to overheat one spot. I mean, it was made to sit in/on a fire! Cast iron melts at about 3000F so no acetylene torches. Just burn the paint to an ash and wire brush it. Get it thoroughly clean and reseason it.
     
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  3. Myr1ad

    Myr1ad Scout

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    Walnut shell medium in a sand blaster.
     
  4. J. Pierce

    J. Pierce Perpetually Off Topic, Sorry. Supporter

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    I'd set it in a fire pit and cook it off, wire brush it and start the seasoning process.
     
  5. DKR

    DKR Scout

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    Take it to an Aviation bead blaster. That's how I clean old cast iron. The beads are glass.
     
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  6. Outdoor Dauber

    Outdoor Dauber Roughian #3 Supporter

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    I think any of these suggestions would work. I'd start with adding some water and putting it in a fire to burn off the paint. Then wire brush.
     
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  7. 66drifter

    66drifter Guide

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    ¿ painted inside too or just outside ?
     
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  8. NattyBo

    NattyBo Guide

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    Both, I think they wanted to display it outside or were just really lazy with rust prevention.
     
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  9. NattyBo

    NattyBo Guide

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    It was found, abandoned when some tenants left a rental unit, then given to me. Ive taken it to classrooms and set up a small tripod for history demonstrations. Can't have a fire in class so it was fine as is, but it's just too cool not to use.
     
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  10. Outdoor Dauber

    Outdoor Dauber Roughian #3 Supporter

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    Oh, painted inside too? :33:
     
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  11. AdamD1776

    AdamD1776 Scout

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    Have it media blasted, then re-season it like you would a skillet. Most metal-working or auto-body shops should have a media blaster (or at least know one that does), and if you know someone there, you may be able to get it done for a 6 pack or some cash on the side.

    Edit- Based on some quick internet searches, it appears that media blasting is not highly recommended for cast-iron cookware (though some do use it), and that the preferred method of stripping rust is electrolysis. I don't think it would work for paint, though.

    Edit 2- The suggestion of using walnut husks for blasting media would probably be best if going that route, as there is some concern about blasting media being embedded in the cast iron. The walnut husk would probably just burn out on the first good heat, and be no different than ash from a fire.
     
    Last edited: Mar 19, 2019
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  12. AdamD1776

    AdamD1776 Scout

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  13. Gizamo

    Gizamo Scout

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    I've done this with kettles. They haven't warped.
    Don't thing I'd try it with a flat bottomed pan.
     
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