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Metal treating with CI filings?

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  • #16
    Originally posted by OKChipmaker View Post
    years ago I seen them used to find cracks in cast .iron heads and blocks. Used with a large 110 volt magnet. cannot remember a lot about it though.
    I remember that too.

    JL................

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    • #17
      Originally posted by J Tiers View Post
      You got a recipe /process for that? Source for MnO2 material?
      I bought mine at a local pottery hobby shop
      paul
      ARS W9PCS

      Esto Vigilans

      Remember, just because you can doesn't mean you should...
      but you may have to

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