Chemical Strawing acid

[Olle]

Originally Posted by PatrickB

I think a surface chemical treatment reduces the risk of harming these old parts, especially the ejector, with heating by a novice. Also, I believe the chemical coloring is more durable.

No on both. If you heat it to the correct color, you have heated to the same temperature the factory used. In other words: The temper won't be affected. The chemical bluing will be of the same quality as a very thin cold blue, ie. not very durable at all.