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Old 07-27-2016, 08:59 AM   #6
Gelbster
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Join Date: May 2014
Location: S.California
Posts: 2,027
Got to know if it is ferrous or not to start with indicating probable source. Hence magnet +cleaning of the FOM.
For example, bearing debris often looks golden color before you rinse it. Easily mistaken for bronze Babbit bearing debris. But when you rinse it in a solvent it is grey and non-magnetic.
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