Quote:
Originally Posted by lugerholsterrepair
a recipe for a chemical strawing solution that required Selenic acid. Sounds crazy. Maybe they used the acid to clean the part before strawing? I always use alcohol to final clean before firing up the plumbers torch.
Re read that thread or tell us where it is (link) maybe all will be revealed...
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It's really not as crazy as it sounds, like I mentioned in the other thread, selenic acid is one of the components in cold blue. I haven't tried this, but I have seen an engraved pistol where the engraver used diluted cold blue to make the engraving look like gold. I have also read a description for how to simulate case hardening by dabbing cold blue and water on the parts, this will supposedly produce an mottled pattern in different colors. I wouldn't be surprised if the selenic acid actually can produce something like a straw color, but as already said: Heating is much easier. It doesn't involve any hard-to-get chemicals at all, just a good cleaning and some judicious work with a propane torch.