LUMAD BAGOBO BOLO

[Sajen]

Originally Posted by kronckew

I'd not over-clean the blade. Black rust is 'good' stable iron oxide, Fe3O4, and adds character & provenance.

Hello Wayne,

I kindly disagree at this point with you, rust is oxidation and oxidation is always active. But you are correct, black corrosion is slow but still active. Therefore I would remove this rust spots. Like said, a longer bath in a vinegar solution will do the job.

Regards,
Detlef

[Battara]

I don't know Detlef, I kind of agree with Wayne. I have noticed that black oxidation is much more stable and have not had problems with it for years.

Now there is a point, however, that in order to get a proper etch for a pattern, you do have to remove the black oxidation as well.

[Sajen]

Originally Posted by Battara

I don't know Detlef, I kind of agree with Wayne. I have noticed that black oxidation is much more stable and have not had problems with it for years.

Now there is a point, however, that in order to get a proper etch for a pattern, you do have to remove the black oxidation as well.

Hi Jose,

It's chemistry, iron oxidation is always active, like said before, black oxidation isn't very fast but still active. It's different as aluminium oxidation which built a protection against further oxidation.

A proper etch of the blade could be worthwhile.

Best regards,
Detlef