Here’s two hacks to etch your own boards at home in just a few ... He used Muratic (Hydrochloric) acid and Hydrogen Peroxide with a sponge to wipe that copper away. The trick in this, we ...

Sodium perchlorate, another strong oxidizing agent, is sometimes used industrially ... of chloride ions from hydrochloric acid effectively resets the etching solution, restoring the cupric ...