Member #651656

Member Since: February 18, 2015

Country: United States

  • I love this article! A solution of 3% Hydrogen Peroxide and 30% Hydrochloric Acid works great, as you mentioned. I generally mix up 1 cup of Hydrogen Peroxide with 1/2 cup of Hydrochloric Acid. Be sure to carefully pour the acid into the hydrogen peroxide. This minimizes splashing of the acid and risk of a naughty exothermic reaction. BE SURE YOU WEAR PROPER PROTECTIVE EQUIPMENT. Also make SURE that your container for etching and mixing these two things is NOT made of metal. The HCl will dig into just about any metal. I use either ceramic, Pyrex, or polypropylene. If it starts losing it's "oomph" just add a bit more Hydrogen Peroxide. This usually etches in much less time than the Ferric Chloride stuff.