Messages Archive


Bill Tindall, E.Tn.
Pitch is acidic. Anything basic will dissolve it. I use ammonia or any cleaner with ammonia in it.

It has been reported that ammonia will attack carbide teeth. I have been unable to observe this claim and it makes no chemical sense. I have soaked a carbide router bit in ammonia for days with no observable effect on the luster of the surface that could indicate dissolution.

Copper has been used as a layer between the carbide teeth and the steel saw plate. Given enough time ammonia plus oxygen will dissolve copper. I can't imagine this reaction taking place on the thin copper edge exposed at the tooth weld in the time it takes to clean a blade. But to be on the safe side don't soak in ammonia water and forget the blade for a week.

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