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Ted Mooney, P.E. RET
Pine Beach, NJ

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Machining after Passivation

After passivating parts, can you further deburr the part with sandpaper, etc...? I thought that after passivating it wouldn't be safe to machine or using deburr tools such as using a red wheel, sandpaper, knife, etc....

Chris Cabellon
Inspector - Carson, California
December 1, 2008

Any surface work will remove the passivated layer in that area. Also, any clamping by steel clamps may smear iron into the surface. Bad choice!. There is no reason that all of the work can not be completed and inspected if required before the passivation.

James Watts
- Navarre, Florida
December 3, 2008

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