Large Scale Central

Looking for a recipe for Blacken-it

Has anyone made their own Chemical Blackener? I’ve had good luck with Blacken-it and Jax but wonder if there is a cheaper DIY solution (pun intended). I did find someone using Copper Sulfate crystals and a bit of sulfuric acid.

-Dan

Here is a rather in-depth article from 2007 - CHEMICALLY BLACKENING BRASS

It looks well researched and may be of use to you. As I still have a relatively full bottle of Blacken-It I have not needed to seek out a replacement yet.